TM Rhenofol E

Technical Manual

Edition 2004

Roofing Membrane SystemRhenofol

Rhenofol

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Imprint

Roofing membrane system Rhenofol Technical manual

Edition 2004

Editor:

FDTFlachdachTechnologie GmbH & Co. KGEisenbahnstrae 6 - 8D-68199 MannheimTel +49-6 21-85 04-0Fax +49-6 21-85 04-2 05www.flachdachtec.de

Copyright 2004 by:

FDT FlachdachTechnologie GmbH & Co. KG

This manual corresponds with the FDT manufacturer application instructions for designers and applicators in the FederalRepublic of Germany.It cannot, however, replace professional knowledge.Every user is obliged to keep his knowledge up to date!

Valid from January 2004.

Technical changes reserved.


Roofing membrane system Rhenofol 3

Contents

Roofing membrane system Rhenofol

The system an overview 5

Rhenofol CV, mechanically fastened

Application techniques 13

Technical details 25

Rhenofol CG, loosely laid with ballast



Roof gardens with Rhenofol CG, loosely laid with ballast



Data sheets, product information, accessories

Data sheet Roofing membrane Rhenofol CV 67

Data sheet Roofing membrane Rhenofol CG 69

Data sheet Waterproofing membrane Rhenofol C 71

Data sheet Vapour barrier PE 73

Data sheet FDT glass fleece 120 g/m2 74

Data sheet FDT synthetic fleece 300 g/m2 75

Data sheet Protection sheet Rhenofol TS 76

Accessories 78

Technical approval

5

12

34

54

66

84

Page


In line with architectural ideas:Rhenofol

4

The German Pavillonat the Expo 2000,Hannover/Germany

Stade de FranceParis/France

Palacio de Comunicaciones,Madrid/Spain

Carrefour supermarket,Plejada/Poland

Evesham Micros,United Kingdom

Palasport,Monza/Italy


Roofing membrane system RhenofolThe system an overview 5

Rhenofol advantages

The roofing membrane with widespread advantages

Central warehouseof the REWE AG inStelle, securelywaterproofed withRhenofol.

Particularly efficient and economic application

Resistant to UV radiation and weathering Proven long-term durability all over the

world Especially designed for the demands of new

industrial buildings Single-ply with reliable sealing of seams Applied without open flame Completely recyclable

Tailor-made solutions

Depending on the requirements of the projectand the different roof structures, applyingvarious methods for ensuring secure installa-tion, the roofing membrane system Rhenofolalways provides the best possible solution.

For mechanically fastened layer build-upswithout ballast: Rhenofol CV, the roofing membrane withpolyester fibre reinforcement according toDIN 16734.

For loosely laid build-ups with ballast (gravel, paving slabs, vegetation): Rhenofol CG, the roofing membrane with glass fleece reinforcement according to DIN 16735.

Roof Gardens with Rhenofol CG have beentested in a four-year-test (FLL testing) forresistance to root penetration. Thus, theroofing membrane Rhenofol CG has a double function: waterproofing and protection against rootpenetration.


Roofing membrane system Rhenofol The system an overview6

Rhenofol advantages

Proven quality

The application of Rhenofol not only offers the immediate benefit of fast and efficientinstallation. On the one hand, the quality isregularly tested by in-house material control.On the other hand, neutral and independentinstitutes carry out tests of our roofing mem-branes when newly laid. Furthermore, theState Material Testing Institute in Darmstadt,Germany, regularly confirms that even afterseveral years of weather exposure, Rhenofolstill shows product qualities that surpass therequirements for synthetic roofing membranesas they leave the production line.

Examples

Testing the roof in an Industrial environment.Rhenofol CV 1.2 mm, mechanically fastened,no leaks even after decades.

Warehouse and assembly halls of PfalzmbelBroeinrichtungsfabrik GmbH in BadSchnborn.Rhenofol CV 1.2 mm, mechanically fastened,unimpaired performance after twenty years.



Rhenofol advantages PVC and the environment

Rhenofol is a roofing membrane made of non-rigid polyvinyl chloride (PVC-P),because PVC has many advantages:

versatile postforming flexible durable economical weather-resistant robust maintenance-free recyclable

PVC stands up even to critical questions:

Production

The basic ingredients for the production of PVCpowder are mineral salt (57 %) and petroleum(43 %). The producers have committed them-selves to using ecological production techniquesand technologies. Additives, such as colouringpigments, are part of all PVC recipes. The colouring pigments are inorganic additives, such as titanium dioxide, that are not detrimen-tal to health and are used, amongst others, forcosmetics and food products.

Processing

Rhenofol seams can be sealed without the useof open flame, by hot air or solvent-weldingagent. Neither during processing nor during subsequent use of the roofing membrane aresignificant amounts of hazardous substancesreleased.

Fire performance

PVC products are extremely hard to ignite and are self-extinguishing. The ignition temperature of Rhenofol is 330 400 C andthus almost twice as high as that of timberwhich catches fire at temperatures as low as 210 270 C. Also the heat build-up ofburning PVC is two thirds less than that of timber.

Energy and resource profile analysis

PVC uses less energy and resources than othermaterials used for similar purposes. The air and water consumption for production is alsorelatively small. In order to preserve landfillsites and resources, old PVC-P roofing mem-branes are recycled.

The raw materialsfor PVC powder production: petroleum andmineral salt.

ExampleLife cycle assessment of PVC compared to othermaterials

Life cyle assessment of sorting trays of packaging.Source:ArbeitsgemeinschaftPVC und Umwelt e. V.

Life cycle assessment of sorting trays

Cardboard

Polypro-pylene (PP)

Polyvinylchloride(PVC)

Energy(MJ)

Air pollution

(1,000 m3)

Water pollution

(dm3)

Waste product(cm3)

Petroleumconsumption

(g)

35

30

25

20

15

10

5

0



PVC and the environment:The PVC cycle guarantee

Learned from nature valuable resources cycle

The recycling of valuable resources is not anew invention. Without resource-saving recycling of old materials, nature would notwork. It continuously processes exhausted matter everywhere to utilize it for future use.

We must accept our ecological responsibility

The building materials industry has learnt thislesson. That is why highly versatile and provenmaterials like PVC are recycled more than ever.

FDT continually assesses the use of PVC as a durable building material. That is why weconsider ecological aspects not only withregard to the production and storage of theroofing membranes, but also with regard totheir application and disposal.

Recycling a European concern

Together with the other leading European producers of PVC roofing membranes, FDTfounded the association for PVC roofing membrane recycling (AfDR). They developed a joint concept for the recycling of old roofingmembranes, which has been in use since 1994. In the AfDRrecycling plant, the old PVC materials are processed and pulverized. The resulting recycling product is then usedagain for roofing membrane production. It isan ideal raw material for new roofing andwaterproofing membranes.

Conclusion: The advantages prevail

Owing to the outstanding material qualitiesand the reasonable cost-performance-ratio atthe moment, there is no real alternative toPVC.

Cycle schemeRecycling anddisposal of PVC.

Was

te

PVC

Salt

HC

l

National and international producers of raw materials

Chemical processing company

Clearing houseLicenser

Manufacturer, e.g. roofing membranes,windows, packaging

ProductsApplication1100 years

PVC secondarysales company

Removal, dismantling, stripping, sorting according

to branches, e.g. AfDR

Incineration Salts Landfill site

Municipal waste management

PVC points of acceptance(waste management

enterprises)

HCl

Energy

Encashment

Licence



Quality control

Rhenofol under formal quality control

Because of their practical experience, installersand designers become ever more demandingwith regard to the quality of the roofing mem-branes.FDT meets these high quality requirements in an exemplary manner, through accurate produc-tion methods, permanent production controland monitoring measures in cooperation withofficial material testing institutes.

The following features, amongst others, aretested during production:

No blisters or cracks Thickness, width consistency Flatness Weight per square metre Tensile strength, elongation at break Dimensional stability after storage at + 80 C Bending behaviour at temperatures as low

as 20 C

Furthermore, the roofing membranes RhenofolCV and Rhenofol CG are tested at the StateMaterial Testing Institute Darmstadt plasticsdepartment in the framework of a quality control agreement.

These regular control measures include theproduction, external storage and the applica-tion on building sites.

The in-house FDT quality control and the quality control carried out by a neutral testingauthority provide the certainty that Rhenofol isa reliable and long-term solution to flat roofproblems.

Warranty on materials

Warranty certificates are available for all roof-ing membranes supplied by FDT. FDT offerscomprehensive warranty, including warranty on materials and additional agreements in line with NFRC initiatives which deal with the reimbursement of application costs and resulting expenses. A range of options are available to meet the clients requirements.

Quality assurance

Testing according to DIN EN ISO 9001.

TV certificate:We shall be glad tosend you a copy onrequest.



Rhenofol overviewApplication methods and Roof build-ups

Non-traffic roof areas

No

n-v

enti

late

d r

oo

f(w

arm

ro

of)

Ven

tila

ted

ro

of

(co

ld r

oo

f)In

vert

ed r

oo

f

Supporting deckRoof-type Roof slope up to 20

Profiled steel decking

Reinforced concrete

Lightweight concrete

Timber board cladding/derived timber products

Reinforced concrete

Rhenofol CV,mechanically fastened

Rhenofol CG,loosely laid with ballast*




* only for slopes up to 3.






Rhenofol overviewApplication methods and Roof build-ups

Decks and traffic roof areas




* only for slopes up to 3.

Terraces Parking decks


Rhenofol CV

mechanically fastened12

Jaguar, Castle Bromwich/United Kingdom

Florac, Lochristi/Belgium

Stade de France, Paris/France

Baleares technology centre, Inca in Mallorca/Spain


Rhenofol CVmechanically fastenedApplication techniques 13

Safety and functional efficiency,supporting construction

Safety and functional efficiency

With mechanical fastening, the waterproofingmembrane is independant of the other ele-ments in the roof build-up. Movements ofthese other components therefore cannot passon stresses to the membrane, which is signifi-cant for the long term effectiveness of thesystem, especially on lightweight roofs. Every installation has a specific wind uplift calculation.

Application instructions

Supporting construction

The supporting deck structure has to meetthe requirements with regard to load-bearing capacity, deflection, anchorage anddrainage.

Joints that may impede the functional efficiency of the roof sealing due to theirwidth or movements, have to be formedaccording to constructional requirements.

For compatibility reasons, timber boardcladding, chipboards and the like may betreated only with salt-based wood preser-vatives. Oil or solvent based impregnationagents must not be used.

Rapid intrusion of air underneath the roofsealing at the roof perimeter and at roofpenetrations must be prevented. Thereforethese areas have to be made windtight, in the case of profiled steel decking, forexample, by closing the air drains with filling material.

Roofing membranes Rhenofol CV must notcome into contact with bitumen or tar.

National standards and regulations must beobserved.

Automated working processes, forexample withautomatic fastening tools,provide for economicalapplication.


Rhenofol CVmechanically fastened Application techniques14

Vapour control layer,thermal insulation layer

Vapour control layer

As vapour control layers, in the case of non-ventilated roofs, we recommend:

For non air-conditioned rooms (e.g. livingrooms and offices or similar rooms withoutsuspended ceiling): vapour barrier PE (polyethylene).

The vapour barrier PE is applied with a seamoverlap of 10 cm, with the seams being sealedwith connection or seam tape. The vapour barrier must be taken up and flashed at con-nections and cappings with connection tape; at roof penetrations it must be flashed.

For rooms with high air condition loads(e.g. swimming pools and air-conditionedrooms):In case of air-conditioned rooms and roomswith high air condition loads, as well ashigh pressure rooms, there should be nomechanical fastening through the vapourbarrier. In these cases please consult theFDT experts to identify the right layer build-up and application method.


Thermal insulation layer

You must bear in mind tread-fastness whendesigning the thermal insulation layer on steelprofile supporting decks. As materials for thermal insulation layers we recommend:

Large-sized insulation boards made of quality assured rigid foam or Polyurethanesize 1.20 x 1.20 m or 1.20 x 2.40 m.

Large-sized non-flammable mineral fibreboards. Because of better suitability formechanical fastening, we recommendboards with a greater resistance to pointloads (min. 500 N at 5 mm deformation)and increased compression strength (com-pressive strain at 10 % compression setmin. 0.06 N/mm2).

Small-sized insulation boards can be used, provided they can be properly fastened.Insulation boards or board sections that are not sufficiently fixed by linear fastening mustbe secured in a stable position with additionalfasteners (at least 2 fasteners/m2) prior toapplying the roofing membrane.

Insulation materials that are not dimensionallystable and which buckle or bulge must not beinstalled. The insulation elements must be laidwith pressed joints in bond (with the long sideperpendicular to the application direction ofthe roofing membrane).




Separation layer, Rhenofol CV, mechanically fastenedat the overlapped membrane edge

Separation layer

When Polystyrene Insulation is used withRhenofol CV a separation layer is obligatory.

On top of inflammable thermal insulation materials for fire protection reasons a glass fleece 120 g/m2 must be installed as a separa-tion layer, preventing interaction (e.g. with rigidpolystyrene foam) at the same time.

On top of hard substrates with distinctive edges(e.g. timber board cladding, lightweight con-crete), the FDT synthetic fleece 300 g/m2 mustbe installed as a separation and protection layer.

For the separation against bituminous layers, e.g. in case of old roof refurbishment, a FDTsynthetic fleece 300 g/m2 must be installed, ifnecessary combined with an underlying poly-ethylene foil.


Rhenofol CV mechanically fastened at theoverlapped membrane edge

Roofing membranes Rhenofol CV are looselylaid and mechanically fastened at the over-lapped membrane edge. The seam overlap is10 cm (100 mm). Depending on the substrate,different fastening elements are used. Themembrane seams are securely joined throughsolvent or hot air welding.

On profiled steel deckings and timber boardcladding the Rhenofol CV membranes must bearranged perpendicularly to the corrugations orboards to achieve the most regular wind loaddistribution possible into the supporting deck.

Rhenofol CV can be mechanically fastened onroofs with any slope. With roof slopes over20, we recommend agreeing the applicationwith the FDT experts.

Economic layingwithout open flame:the mechanicallyfastening at the over-lapped membraneedge.

Profiled steel decking Vapour control layer Thermal insulation layer FDT glass fleece 120 g/m2

Welded seam Washer Self-tapping screw Rhenofol CV



Note:

In-line fastening spacing min. 15 cm, max. 60 cm.

Fastener spacing on the same corrugation atprofiled steel deckings must not be less than20 cm.

At building heights over 20 m and in specialcases (e.g. airplane hangars, buildings near thecoast, extreme exposure) you have to defineappropriate object-related measures for mem-brane position stability.

On request, computer-based object-related calculations of the necessary amount of fasteners are carried out, which may result inlesser amounts of fasteners than indicated in the table, provided the building has a favourablegeometry.


Roof areas

Inner area

Perimeter area

Corner area

Inner area

Perimeter area

Corner area

Number 2)

of fasteners(fast./m2)

3

4

6

4

6

10

Rhenofol CV1.50 m 1.03 m 0.68 m 0.51 mmax. in-line spacing (cm)

24 36

27 43

18 29 41

18 27 43

18 29 41

173) 243)

Height of eavesabove ground1)

Fasteners/m2 and max. fastener in-line spacing

1) Not for tower-style detached building. Not for exposed positions.2) The values refer to a design load of 0.4 kN/fastener. 3) With profiled steel deckings with wider corrugation spacing, additional single fasteners in the middle of the membrane may be necessary,

if the requires amount of fasteners cannot be placed at the overlapped membrane edge alone.

Fasteners/fastener spacing

0 8 m

8 20 m



Fastening example lightweight concrete roofFastening example steel decking

Example lightweight concrete roofBuilding height 8 mAspect ratio b/a < 1.5

Example steel deckingBuilding height 8 20 mat corrugation widthof 0.24 mAspect ratio b/a > 1.5

Fixing with Rhenofol coated metal sheet


Perimeter area

Rhenofol CV membranes, 1.03 m wide

Corner area

Rhenofol CV membranes,

1.03 m wide

Corner area Rhenofol CV membranes, 0.51 m wide

Perimeter area Rhenofol CV membranes, 0.68 m wide

Inner area


Inner area


0.27 m

0.36 m

0.24 m

0.24 m

0.24 m

0.16 m

Corner area

a/16

Cor

ner

area

a/16

Perim

eter

are

a a/

8

min

. 1.

00 m

wid

e

Perimeter area a/8

min. 1.00 m wide

Perim

eter

are

a a/

8

min

. 1.

00 m

wid

e

Perimeter area a/8

min. 1.00 m wide

Cor

ner

area

a/1

6

Corner area a/16



Fastening example steel decking

Example steel deckingBuilding height 8 m at corrugation width of 0.24 m Aspect ratio b/a > 1.5


Corner area


Perimeter area


Separate fastening of non sufficiently fixed

insulation boards

Inner area


0.24 m

0.24 m

0.24 m

Corner area a/16

Cor

ner

area

a/1

6

Perim

eter

are

a a/

8

min

. 1.

00 m

wid

e

Perimeter area a/8

min. 1.00 m wide



Rhenofol CV, mechanically fastenedwith solvent paste system

As an alternative to fastening at the over-lapped membrane edge, Rhenofol CV may also be applied with the solvent paste system.Beforehand, Rhenofol CV strips or Rhenofol CVsets (discs with a diameter of 18 cm) aremechanically fastened. Then the roofing mem-brane Rhenofol CV is laid. The homogenousjoint between roofing membrane and strip is achieved with the Rhenofol welding paste SBthat has been specially developed for thisapplication method.

With supporting profiled steel deckings andtimber board cladding, the Rhenofol CV stripsare arranged perpendicularly to the installationdirection of the steel sheets or timber boards,to achieve a regular wind load distribution intothe supporting deck.

Advantages of the welding paste system:

The field fastening principle provides bestpossible load distribution, so that, com-pared to seam fastening, higher designloads are possible. This also means lessfasteners.

The strip spacing can be continuously adjusted, which means best possible use of the design load.

Uniform membrane width of 2.05 m overthe complete roof area, reducing seam welding to a minimum.

The seam overlap is only 5 cm, as no fasteners have to be covered.

The welding paste system has proven itself onmany roofs since 1993.

The strip spacing and the amount of fastenersare, in principle, designed by the FDT expertsaccording to each object.

The application with the welding paste system requires special professional knowledge.It should therefore be carried out only by specially trained applicators.10 cm

Profiled steel decking Vapour control layer Thermal insulation layer FDT glass fleece 120 g/m2 (if polystyrene

insulation) Rhenofol CV strip Washer Self-tapping screw Rhenofol welding paste

Rhenofol CV

SketchLayer build-upwith mechanicalfastening ofRhenofol CV withthe welding pastesystem.



Perimeter fixingFastening materials

Perimeter fixing

For wind safety reasons, roofing membranesRhenofol CV must be fixed at all perimeters,penetrations and valleys with a deviation ofmore than 3 from the horizontal, by weldingonto Rhenofol coated metal sheets.

The fixing is carried out with angles or strips ofRhenofol coated metal sheets that are fixed ontothe substrate, against which the roofing mem-brane Rhenofol CV is flashed in the roof level bywelding.

The coated metal sheets should be cut to awidth of at least 8 cm.

If the thermal insulation layers do not allowdirect fastening in the substrate, the underlay ofthe coated metal sheets must be sufficientlypressure-resistant.

Suitable underlays are:

Insulation materials with a compressionstrength of at least 0.15 N/mm2 at max. 10 % compression set.

Timber profiles, at least 3 cm thick, andunderlying insulation material with a com-pression strength of at least 0.1 N/mm2 atmax. 10 % compression set.

Single or multi-part timber profiles.

It is permissible under the following conditionsto use single fasteners for perimeter fixing,instead of Rhenofol coated metal sheets: no exposed position building height max. 20 m layer build-up thickness above the upper

edge of the supporting deck not more than15 cm.

The necessary amount of fastener per meter is identical with the amount of fasteners in thefirst row along the flashing, but not less than 4 fasteners/m. National standards and regulations must be

observed.

Fastening elements and Rhenofol coated metal sheet fixing spacing

Examples ofangle fillets for fastening onvertical or slopedsurfaces.

Examples ofstrips or anglefillet for fastening onhorizontal surfaces.

Supporting Item to be fastenedconstruction timber profile*) Rhenofol coated

d 3 cm metal sheetb 8 cm d 4.5 cmb 1.5 d b 8 cm

Reinforced concrete screw 8 mm with plug body-bound rivet 10 mm, spacing 30 cm 4.8/26 mm spacing 10 cm (3.3 units/m), embedment (10 units/m) or SFS type depth 5 cm, or SFS type Spike, spacing 20 cm Spike, spacing 30 cm (5 units/m)(3.3 units/m)

Lightweight concrete lightweight concrete nail lightweight concrete nail anchor 8 mm, spacing anchor 5 mm, spacing 30 cm (3.3 units/m) 12.5 cm (8 units/m)embedment depth 6 cm

Wooden beams wood screw 8 mm wood screws 4.8/25Timber board cladding/ spacing 30 cm (3.3 units/m) bond spacing 10 cmchipboards length in wooden beams 6 cm (10 units/m)

Profiled steel decking self-tapping screw 4.5 mm, steel blind rivet 5 mm, spacing 15 cm 5 mm, spacing 10 cm spacing 10 cm (6.7 units/m) (10 units/m)or screw with nut

*) Countersink the fastening elements in the timber profiles. If necessary, pilot-drill and use washer 10 mm. The manufacturers application instructions must be observed.



Examples of perimeter fixing with Rhenofol coated metal sheets

Perimeter fixingApplication examples

Rhenofol coated metal sheet

Mechanical fastening

Rhenofol CV


Separation layer


Thermal insulation layer pressure-resistante.g. extruded rigid polystyrene foam

Treated timber profile



Flashings and cappings,application examples

Flashings and cappings

All flashings and cappings are also carried outwith Rhenofol CV flashing strips. The flashingstrips must be sufficiently fixed.

If the connecting membrane is bonded, then atflashing heights over 20 cm a full-size adhesivebond is necessary. Valley areas are left unbondedat a width of 20 cm to allow movement com-pensation.

With mechanical fastening of the flashing membrane with Rhenofol coated metal sheetsor by clamping with the mounting rail of theroof edge trim the spacing between the in-linefasteners must be not more than 50 cm.

In this case the whole girth length must betaken into consideration. The width of theRhenofol coated metal sheets for intermediatefixing must be at least 5 cm.

You may leave out separation layers in the flashing area, provided the substrate is smoothand even and the edges have a special pro-tection (e.g. with angles made of Rhenofolcoated metal sheets or synthetic fleece). Withnon-compatible materials you must alwaysinstall suitable separation layers.

You will find further examples on this topic inthe drawings Technical details.

Rhenofol coatedmetal sheet

Mechanical fastening

Rhenofol CV

Separation layer

Thermal insulationlayer pressure-resistant


Flashing membrane

fastened through the

middle with two Rhenofol

coated metal sheets.

Bonded roof

capping.

The roofing

membrane is

laid under the

roof edge trim.

Application examples for flashings and cappings



Wall connections,roof light connections,application examples

Wall connections

The upper edge of the Rhenofol CV roofing membrane is pressed to the substrate with rigid FDTaluminium wall connection profiles and additionally secured with sealant A.

Roof light connections

Roof light upstands are waterproofed to theupper edge with Rhenofol CV strips. The flash-ing membrane is bonded to the upstand withthe upper end being secured with Rhenofolpaste. Particularly advantageous are upstandsthat are factory prepared for connection withPVC membranes:

Upstands with Rhenofol roofing membranefactory applied.

Rigid PVC upstands or upstands with lami-nate embedded rigid PVC strips, againstwhich the roofing membrane Rhenofol CV isflashed in the roof level by welding. Theupstands have to be approved by the rooflight manufacturer for this method of attachment, otherwise separate fixing withRhenofol coated metal sheet is necessary.

Coated metal sheet with alu-minium wall connectionprofile

Connection with non-bearing facade

Wall connection with overhang

Roof light connection at upstands with laminate embedded rigid PVC strips

Rhenofol CV Rhenofol-Contact adhesive 20 Rhenofol flashing strip Fixing with angle fillet made of

Rhenofol coated metal sheet Welded seam Aluminium wall connection profile,

e.g. Classic or Economy Sealant A Fixing with Z-profile made of

Rhenofol coated metal sheet

Facade lining Pressure resistant thermal insulation Fixing with angle fillet made of

Rhenofol coated metal sheet, alsoachieves wall connection

Overhang

Rigid polystyrene foam board thermal insulation layer

FDT glass fleece 120 g/m2

Rhenofol CV Laminate embedded rigid PVC strip Welded seam Rhenofol paste Roof light upstand

Application example

Application examples



Layer build-ups

Timber board cladding/plywood products

Separation layer FDT synthetic fleece 300 g/m2

Rhenofol CV Mechanical fastening within overlapped

membrane edge

Lightweight concrete Separation layer FDT synthetic fleece

300 g/m2


membrane edge

Examples of layer build-ups

Non-ventilated roof (warm roof)


Ventilated roof (cold roof)

Corrosion protected profiled steel decking Vapour control layer PE Mineral fibre boards, if necessary with

additional fastening under the roof sealing Rhenofol CV, laid perpendicularly to the

corrugations Mechanical fastening within overlapped

membrane edge with tread-fast fasteners

Reinforced concrete Vapour control layer PE Thermal insulation layer Separation layer FDT glass fleece 120g/m2


membrane edge


Rhenofol CVmechanically fastenedTechnical details 25

Wall connectionNon ventilated roof

Scale 1:5

Steel Structure

Galvanized profiled Steel Decking

Vapour Control Layer PE

Thermal Insulation to Specification

Rhenofol CV

Steel Closure Flashing

Thermal Insulation

Airtight Sealing Tape

Linear Perimeter Fixing

Flashing Strip Rhenofol CV

PVC coated Metal Angle

Capping

Welding

Cladding


Rhenofol CVmechanically fastened Technical details26

Parapet with Insulation FilletNon ventilated roof

Scale 1:5


Vapour Control Layer


Insulation Fillet

Rhenofol CV

Fixings


Steel Angle

Rhenofol CV-Flashing Strip



Welding

Metal Cladding Closer

Cladding (thermal)


Steel Angle

FDT Rainwater Outlet


Rhenofol CVmechanically fastenedTechnical details 27

Scale 1:5

Fire Wall ConnectionNon ventilated roof




Rhenofol CV

Linear Fixing


Mineral Wool


Welding




Wall Connection Profile

Capping

FDT-Sealant A

Sealing Tape for Vapour Control Layer


Steel Angle




GutterNon ventilated roof

Scale 1:5

Steel Structure




Separation Layer Glass Fleece 120 g/sq.m.

Rhenofol CV

Treated Timber Profile

Metal Closer


Termination Bar


Metal Cladding Closer

Sealing Tape

Welding

Bracket

Gutter

Cladding (Thermal Insulation)



GutterNon ventilated roof

Scale 1:5

Steel Structure




Rhenofol CV

Steel Angle


Thermal Insulation

PVC coated Metal

Mineral Wool

Welding

Bracket

Gutter


Cladding

Thermal Insulation

Rhenofol CVmechanically fastened



Scale 1:5

Rooflight ConnectionNon ventilated roof




Rhenofol CV

Steel Angle


Welding

Rigid PVC Rooflight Kerb

Rooflight

Rhenofol-Paste

Thermal Insulation Fillet

Insulation Profile Filler



Scale 1:5





Rhenofol CV


Welding

Rhenofol-Metal Angle


Capping

Rhenofol-Flashing Strip

Rooflight


Rooflight Kerb

Steel Structure





Scale 1:5





Rhenofol CV




Thermal Insulation


Capping



Steel Angle



Steel Structure



FDT Rainwater OutletNon ventilated roof

Scale 1:5




Separation Layer Glass Fleece

Rhenofol CV

Stiffening Profile

Rainwater Outlet Fixings (3/Outlet)

Welding


Rhenofol Collar



Rhenofol CG

loosely laid with ballast34

Office Center, Halle/Germany

Palacio de Comunicaciones,Madrid/Spain

ZCE administrative centre,Pilsen/Czech Republic

Concert Hall, Alfredo KrausLas Palmas/Spain


Rhenofol CGloosely laid with ballastApplication techniques 35

Safety and functional efficiency,supporting construction,vapour control layer


The ballast ensures the membrane remainssecure against wind uplift forces. The non-shrinking roofing membrane Rhenofol CG withglass fleece reinforcement is loosely laid. Linearperimeter fixing with single elements is onlynecessary with flashings and cappings.

Because of loose laying, the roof sealing isseparated from the other layers of the build-upacross the complete area. Movements andcracks in the supporting construction are nottransferred into the roof sealing.



The supporting deck structure has to meet the requirements with regard to load-bearing capacity, deflection, anchorage anddrainage.

Clean, dry and even roof surfaces.

Substrates for application must be free ofopen cracks, rough concrete, sharp projec-tions and stones.

Joints that may impede the functional effi-ciency of the roof sealing due to their widthor movements have to be formed accordingto constructional requirements.

The roof slope should not exceed 3 to prevent the ballast slipping off.

For compatibility reasons, timber boardcladding, chipboards and the like may betreated only with salt-based wood preser-vatives. Oil or solvent based impregnationagents must not be used.

Rapid intrusion of air underneath the roofsealing at the roof perimeter and at roofpenetrations must be prevented. Thereforethese areas have to be made windtight.

Roofing membrane Rhenofol CG must notcome into contact with bitumen or tar.





In the case of lightweight concrete supportingdecks with correctly calculated thermal insula-tion, you may leave out a vapour control layer,only if the room temperature stays below 20 C and the relative air humidity inside theroom will not exceed 65 %.


Rhenofol CGloosely laid with ballast Application techniques36

Vapour control layer,thermal insulation layer,separation layer

The vapour barrier PE can be laid with a differ-ent overlap: either 10 cm if sealing the seamswith connection tape, or a 20 cm loose overlap(without seam connection in the area) providedyou have: a seamless solid deck, a dimensionally stable insulation material,

40, and standard room air conditions.

For rooms with high air condition loads(e.g. swimming pools, air-conditionedrooms): aluminium compound foils vapour control membrane with metal tape

reinforcement.

In case of doubt, we recommend a calculationof the building physics in order to identify thediffusion characteristics of the roof build-up.

With lightweight steel deckings, we alsorecommend in principle the installation of aseparate vapour control layer, which should beformed as an air barrier.

The vapour barrier must be taken up and flashed at connections and cappings with con-nection tape; at roof penetrations it must beflashed with connection or seam tape.



You must bear in mind tread-fastness whendesigning the thermal insulation layer on steelprofile supporting decks.

Quality assured rigid polystyrene foam boardswith rebated edge are especially suitable mate-rials for thermal insulation layers, where com-pressive strength is important. Polyurethene andHard Rock are also suitable.

Insulation materials that are not dimensionallystable and which buckle or bulge must not beinstalled.

The insulation elements must be laid with pressed joints in bond.

If designed as inverted roof, the instructions ofthe insulation material manufacturer must beobserved.


Separation layer

Between the roofing membrane Rhenofol CGand the substrate, except for building class Afibre insulation material, a separation layer isobligatory.

On top of inflammable thermal insulation materials, a glass fleece 120 g/m2 must beinstalled as a separation layer, preventing inter-action (e.g. with rigid polystyrene foam) and serving as a fire retarding layer in weather-exposed flashing areas.

On top of hard substrates with distinctive edges(e.g. timber board cladding, lightweight con-crete) the FDT synthetic fleece 300 g/m2 must beinstalled as a separation and protection layer.

For the separation against bituminous layers, e.g. in case of old roof refurbishment, a syn-thetic fleece 300 g/m2 must be installed, ifnecessary combined with an underlying poly-ethylene foil.



37Rhenofol CGloosely laid with ballastApplication techniques

Rhenofol CG loosely laid,upper separation layer/perimeter fixing,ballast

Rhenofol CG, loosely laid

Roofing membranes Rhepanol CG are loosely laid with a seam overlap of 5 cm. Themembrane seams are securely joined through solvent or hot air welding.

Upper separation layer/perimeter fixing

Between the roofing membrane Rhenofol CGand the gravel ballast, a separation layer of 0.2 mm to 0.25 mm thick, normally inflam-mable PE foil (e.g. vapour barrier PE) should preferably be installed.

You may leave out the PE foil separation layerif the thickness of the membrane is not lessthan 1.5 mm.

In principle, you will need perimeter fixing (at least 4 single fasteners/m or fixing withRhenofol coated metal sheet) at all flashingsand cappings, built-in details etc.

Ballast

Place ballast immediately onto loosely laid roofing membranes to secure its positionagainst wind uplift. Suitable materials are:

bulk gravel layers, min. 50 mm thick, natural uncrushed stones, fraction 20/40.

paving slabs in a fine gravel bed.

If appropriate gravel is not available or the gravel is applied pneumatically, then, as underpaving slabs, you will need an additional pro-tection layer (e.g. synthetic fleece 300 g/m2 orprotection sheet Rhenofol TS). For compatibilityreasons, coarse rubber protective sheets mustbe laid on a separation layer (e.g. syntheticfleece).

Inner area

min. 50 mmbulk gravel


Perimeterarea a/8



Cornerarea



Height ofeaves aboveground*

0 8 m

over 8 20 m

At building heights over 20 m and for roofswith high wind exposure e.g. tower-style, detached buildings, airplane hangars and buildings near the coast it is necessary to define appropriate object-related measures formembrane position stability.


Examples for ballast

*Not for tower-style detached building. Not for exposed positions.


38Rhenofol CGloosely laid with ballast Application techniques


All flashings and cappings are also carried outwith Rhenofol CG flashing strips. The flashingstrips must be sufficiently fixed.

If the connecting membrane is bonded, then atflashing heights over 20 cm a full-size adhesivebond is necessary. Valley areas are left unbondedat a width of 20 cm to allow movement com-pensation.


With mechanical fastening of the flashing mem-brane with Rhenofol coated metal sheets or byclamping with the mounting rail of the roof edgetrim the spacing between the in-line fastenersmust be not more than 50 cm. In this case thewhole girth length must be taken into consider-ation. The width of the Rhenofol coated metalsheets for intermediate fixing must be at least 5 cm.

max

. 20

cmm

in. 1

0 cm

max

. 50

cm

a1)

b1)

max

. 50

cmm

ax. 5

0 cm

Bonded roof capping.

The roofing mem-brane is laid underthe roof edge trim.

Roofing membrane fastened through themiddle with two Rhenofolcoated metal sheets.

max. 15 cm1)a+b = max. 50 cm

Rhenofol coatedmetal sheet


Rhenofol CG

PE layer

Separation layer




Wall connections,roof light connections

Wall connections Rhenofol CG

The upper edge of the Rhenofol roofing membrane is pressed to the substrate withrigid wall connection profiles and additionallysecured with sealant A.

Rhenofol CG Rhenofol-Contact Adhesive 20 Rhenofol flashing strip Welded seam Wall connection profile Classic Sealant A Facade lining Thermal insulation layer

Fixing with Z-profile made of Rhenofol

coated metal sheet Angle fillet made of Rhenofol coated

metal sheet, also achieves wall connection

Overhang PE layer 0.2 mm 0.25 mm thick

(e.g. vapour barrier PE) Perimeter fixing with single fasteners

Thermal insulation layer FDT glass fleece Rhenofol CG 1.5 mm Laminate embedded rigid PVC strip Welded seam Rhenofol paste Roof light

Roof light Upstand Rhenofol-Contact Adhesive 20 Rhenofol CG Rhenofol paste

Roof light connection Rhenofol CG

Roof light upstands are waterproofed to theupper edge with Rhenofol CG strips. The flashing membrane is bonded to the upstandwith the upper end being secured withRhenofol paste.

Particularly advantageous are upstands that arefactory prepared for connection with PVCmembranes: Upstands with Rhenofol roofing membrane

factory applied. Rigid PVC upstands or upstands with lami-

nate embedded rigid PVC strips, againstwhich the roofing membrane Rhenofol CG is flashed in the roof level by welding. The upstands have to be approved by themanufacturer for this method of attachment,otherwise separate perimeter fixing is necessary.

Rhenofol CG underand on the upstand.

Roof light with laminate embeddedrigid PVC strips.

Flashing with wall connectionprofile.

Flashing againstnon-bearing facade.

Wall connectionwith overhang.



Layer build-ups


Timber board cladding/derived timber products Separation layer FDT synthetic fleece 300 g/m2

Rhenofol CG PE separation layer 0.25 mm thick Bulk gravel, fraction 20/40 mm

Inverted roof

Reinforced concrete Protection layer FDT synthetic fleece 300 g/m2

Rhenofol CG Thermal insulation layer of extruded rigid

polystyrene foam Synthetic fleece gravel stop Bulk gravel, fraction 20/40 mm



Reinforced concrete Vapour barrier PE 0.25 mm thick Thermal insulation layer Separation layer FDT glass fleece 120g/m2


Lightweight concrete Separation layer FDT synthetic fleece 300 g/m2




ParapetNon ventilated roof

Scale 1:5

Rhenofol CGloosely laid with ballast

Reinforced Concrete



FDT Separation Layer, Glass Fleece

Rhenofol CG



Rhenofol CG-Flashing Strip


Steel Retention Angle

Welding

PVC-coated metal

Render Finish

Aerated Brickwork

Thermal Insulation

PE Layer

Min. 50 mm thick round washed Gravel20/40 mm


42Rhenofol CGloosely laid with ballast Technical details

ParapetNon ventilated roofScale 1:5

Reinforced Concrete



FDT Separation Layer, Glass Fleece

Rhenofol CG



Fixing


PVC-coated metal

Welding

Thermal Insulation


Roof Edge Trim

Cladding

Min. 50 mm thick round washed Gravel20/40 mm



ParapetVentilated roof

Scale 1:5

Joists

Close boarded timber

Separation Layer, FDT-Fleece 300 g/sq.m.

Rhenofol CG

PE-Layer



Flashing Strip

FDT Roof Edge Trim

Cladding Support

Close boarded Cladding

Min. 5 cm round washed Gravel 20/40 mm




Wall connectionNon ventilated roof

Scale 1:5

Reinforced Concrete


Thermal Insulation of Specification

Separation Layer FDT Glass Fleece

Rhenofol CG



Separation Layer as required

Rhenofol-Contact Adhesive No. 20


FDT Wall Connection Profile

FDT Acrylic Paste

Blockwork

Render Finish

PE-Layer

Min. 50 mm thick round washed Gravel 20/40 mm




Scale 1:5

Reinforced Concrete



Separation Layer, FDT Glass Fleece

Rhenofol CG

PE Layer

Min. 5 cm round washed Gravel 20/40 mm


Welding

Rhenofol-Paste

Thermal Insulation


Render Finish




Rhenofol CG for decks and trafficked areas:Safety and functional efficiency


Roofing and waterproofing membraneRhenofol CG meets all the requirements set upfor reliable waterproofing of traffic deck roofareas. Being loosely applied, the roof sealing is separated from the other layers of the build-up across the complete area, ensuring thatshrinkage and tension cracks in adjoining layerswill not impair the waterproofing.

The membrane is loosely laid between twoprotection layers and thus meets the require-ments of a sealing against non-pressurizedwater.

The ballast ensures the membrane remainssecure against wind uplift forces.

Rhenofol CG is rot-proof and permanently tight even without being compressed.Solutions containing natural chemicals, humic acid and de-icing salts do not impair itslong term efficiency.




The supporting deck structure has to meet the requirements with regard to load-bearing capacity, deflection, anchorage anddrainage.




Parking deck of ahousing estate inFrankfurt am Main,waterproofed withRhenofol CG.



Rhenofol CG for deck areas:Supporting construction,vapour control layer


Joints that may impede the functional efficiency of the roof sealing due to theirwidth or movements, have to be formedaccording to constructional requirements.With precast concrete supporting decks,joints must be completely pointed, openjoints must be covered, e.g. with metal strips fixed on one side.

The waterproofing level and the covering surface of parking decks and roof terracesmust be sloped. The designed slope shouldbe 10 % or more. Slope layers have to consist of gravel concrete.

For compatibility reasons, timber board clad-ding and derived timber products may be treated only with salt-based wood preser-vatives. Oil or solvent based impregnationagents must not be used.

On roof terraces immediately above residen-tial storeys, appropriate footfall sound insulation must be installed.

The waterproofing may only be exposed topressure forces perpendicular to its surface,not to tensile or shearing forces (e.g. whendriving off or braking). If necessary, abut-ments, anchors or similar must be installed to prevent solid coverings slipping off orbuckling.

An intrusion of air underneath the roof sealing at the roof perimeter and at roofpenetrations must be prevented. Thereforethese areas have to be made windtight.

Rhenofol CG must not come into contactwith bitumen or tar.





The vapour barrier PE can be laid with different overlap: either 10 cm if sealing theseams with seam tape, or 20 cm loose over-lap (without seam connection in the area)provided you have: a seamless solid deck, a dimensionally stable insulation material,

40, and standard room air conditions.

For rooms with high air condition loads (e.g. swimming pools, air-conditioned rooms): aluminium compound foils vapour control membrane with metal tape

reinforcement.


The vapour barrier must be taken up and flashedat connections and cappings with connectiontape; at roof penetrations it must be flashedwith connection or seam tape.




Rhenofol CG for decks and trafficked areas:Thermal insulation layerLower protection layerSealingUpper protection layer


The thermal insulation layer is to be designedin accordance with the thermal and humidityprotection requirements.

In order to avoid deformation damage, youmust use insulation materials that will resist thestatic and dynamic loads. Quality assured rigidpolystyrene foam boards are especially suitablematerials.

The boards must have a rebated edge.Compressive strain or strength reference valuesat 10 % compression set:

min. 0.15 N/mm2 for all decks.

As permissible pressure load on insulation layers, we recommend using only 20 % of theindicated measured values.

Insulation materials that are not dimensionallystable and which buckle or bulge must not beinstalled. The insulation elements must be laidwith pressed joints in bond.

If designed as inverted roof the instructions ofthe insulation material manufacturer must beobserved.


Lower protection layer

Under the sealing a FDT synthetic fleece pro-tection 300 g/m2 is applied. The protectionlayer provides reliable protection of the sealingagainst mechanical impact originating from thesubstrate and prevents interaction e.g. withrigid polystyrene foam.


Sealing

Waterproofing is carried out with at least 1.5 mm thick, loosely laid roofing membranesRhenofol CG (PVC-P roofing membrane according to DIN 16735). Note:Place ballast immediately onto loosely laid roofing membranes to secure its positionagainst wind uplift.


Upper protection layer

As an upper protection layer, 1.1 mm thickRhenofol TS membranes (non-rigid PVC withfleece backing) are installed with a seam over-lap of 5 cm bonded with Rhenofol paste.At flashings and cappings a separate flashingstrip is used, loosely overlapping the protectionlayer at roof level by 25 cm.Rhenofol TS membranes provide protectionagainst mechanical damage, prevent screed or concrete from sticking and allow for thecareful compensation of possible movement in solid wear and protection layers.For compatibility reasons coarse rubber protec-tive sheets must be laid on a separation layer(e.g. synthetic fleece).




Rhenofol CG for decks and trafficked areas:Protective layer/ballastPerimeter fixingFlashings and cappings/built-in details

Protective layer/ballast

Vehicular traffic or heavy load roof areas will be equipped with a statically determinedreinforced concrete panel, which serves as aprotective layer at the same time.

In order to prevent damaging the water-proofing by movements and deformations ofthe solid protective layer, concrete layers mustbe partitioned by joints. The panel size of openconcrete layers should not exceed 2.15 x 2.5 m (= half of the mat width). After inserting back-fill material the panel joints are pointed withjoint sealant.


Perimeter fixing

In principle, you will need linear perimeterfixing (at least 4 single fasteners/m or fixingwith Rhenofol coated metal sheet) at all flashings and cappings, built-in details etc.

Flashings and cappings/built-in details

All flashings and cappings are also carried outwith Rhenofol CG flashing strips. The flashingstrips must be sufficiently fixed.

If the connecting membrane is bonded, then at flashing heights over 20 cm, a full-size adhesive bond with Rhenofol Contact Adhesiveis necessary. Valley areas are left unbonded at a width of 20 cm to allow movement com-pensation.

With mechanical fastening of the flashingmembrane with Rhenofol coated metalsheets or by clamping with the mounting railof the roof edge trim the spacing between

the in-line fasteners must be not more than 50 cm. In this case the whole girth length mustbe taken into consideration. The width of theRhenofol coated metal sheets for intermediatefixing must be at least 5 cm. See also the sketches on page 38.

At all flashings the sealing must be taken up atleast 15 cm over the surface of the protectiveor wear layer, fixed with mounting rails andmade rain-proof.

When sealing roofs of soil-covered buildings,the waterproofing must be taken down at leastby 20 cm under the joint between ceiling andwalls.

Example: Flashing built-in detail door

At door flashings the sealing isprotected against mechanicaldamage by a flashing.



Layer build-ups for decks and trafficked areas


Timber board cladding/derived timber products

Separation layer FDT synthetic fleece 300 g/m2

Rhenofol CG, 1.5 mm thickness Protection layer Rhenofol TS Gravel bed 8/16 Paving slabs



Reinforced concrete Vapour barrier PE 0.25 mm thick Thermal insulation layer, pressure-resistant Separation layer FDT synthetic fleece

300 g/m2

Rhenofol CG, 1.5 mm thickness Protection layer Rhenofol TS Gravel bed 8/16 Paving slabs

Reinforced concrete Vapour barrier PE 0.25 mm thick Thermal insulation layer, pressure-resistant Separation layer FDT synthetic fleece

300 g/m2

Rhenofol CG, 1.5 mm thickness Protection layer Rhenofol TS Concrete road surface



Terraced AreasGutterNon ventilated roofScale 1:5


Reinforced Concrete



Separation Layer FDT Fleece 300 g/sq.m.

Rhenofol CG

Rhenofol TS-Protection Layer

Soft Sand

Paving Slabs

Gutter


Thermal Insulation


Welding

Rhenofol-Metal Z-Profile

Steel Angle



FDT rainwater outletNon ventilated roof

Scale 1:5

Reinforced Concrete


Thermal IInsulation to Specification

Separation Layer FDT Fleece 300 g/sq.m.

Rhenofol CG


Welding


Leaf Guard

Rhenofol CG-Collar


Soft Sand

Paving Slabs



Wall ConnectionNon ventilated roof

Scale 1:5


Reinforced Concrete

Concrete to Falls



Concrete Screed

Mineral Wool

Mastic

Kerb

Separation Layer, FDT Fleece 300 g/sq.m.

Rhenofol CG


Welding

Rhenofol Metal Angle


Concrete

FDT Wall Connection Profile


Roof gardens

with Rhenofol CG

loosely laid with ballast

Office and business centre,Hamburg/Germany

54

Zoological garden,Giraffe house,Magdeburg/Germany


55Roof gardenswith Rhenofol CG, loosely laid with ballastApplication techniques



Roofing membrane Rhenofol CG meets all requirements set up for reliable waterproofing ofgreen roofs.

In terms of resistance to root penetration,Rhenofol CG meets the test requirements of theFLL testing method, test cycle of four years. Thatmeans that the roofing membrane Rhenofol CGserves as a sealing and as a protection againstroot penetration at the same time. There is noneed for a separate root protection layer.

Because of loose laying between the two protec-tion layers, the roof sealing is separated from theother layers of the build-up across the completearea, ensuring that shrinkage and tension cracksin adjoining layers will not impair the sealing.

In most cases the ballast in form of a vegetationmat is sufficient for ensuring position stabilityagainst wind uplift.

The sealing is rot-proof. Solutions containingnatural chemicals and humic acid do not impairthe functional efficiency.


56Roof gardenswith Rhenofol CG, loosely laid with ballast Application techniques

Layer build-upsExtensive roof gardensIntensive roof gardens

Reinforced concrete Vapour control layer PE Thermal insulation layer Separation layer, FDT synthetic fleece 300 g/m2,

alternatively FDT glass fleece 120 g/m2

Rhenofol CG 1.5 mm PE separation layer 0.2 mm thick Drainage and filter layer, at the same time

protection layer Vegetation mat

Reinforced concrete Screed to falls Vapour control layer PE Thermal insulation Separation layer FDT synthetic fleece 300 g/m2

Rhenofol CG 1.5 mm Rhenofol TS as upper protection layer Drainage layer

Filter layer Vegetation layer, without storage irrigation

Example for layer build-up: Extensive roof garden

Example for layer build-up:Intensive roof garden



Supporting construction,vapour control layer



The supporting deck structure has to meetthe requirements with regard to load-bearingcapacity, deflection, anchorage and drainage.



Joints that may impede the functional effi-ciency of the roof sealing due to their widthor movements, have to be formed accordingto constructional requirements.

Green roofs should be designed with a slope.The designed slope should be 2% or more.

With steeper roof slopes (from approx. 7)special shearing protection measures arenecessary, which must be agreed with themanufacturer of the green roof system,depending on the object. In this respect, theinstruction of the manufacturer of the greenroof system must be observed.

For compatibility reasons, timber board cladding or chipboards may be treated onlywith salt-based wood preservatives. Oil orsolvent based impregnation agents must notbe used.

An intrusion of air underneath the roof sealing at the roof perimeter and at roofpenetrations must be prevented. Thereforethese areas have to be made windtight.

Rhenofol roofing membranes must notcome into contact with bitumen or tar.





The vapour control layer PE is applied with a 10 cm seam overlap. The seams are sealedwith seam or connection tape.

For rooms with high air condition loads (e.g. swimming pools, air-conditionedrooms): aluminium compound foils our control membrane with metal tape

reinforcement.


The vapour barrier must be taken up and flashed at connections and cappings with con-nection tape; at roof penetrations it must beflashed.




Thermal insulation layerLower protection layerSealingUpper protection layer


You must bear in mind tread-fastness whendesigning the thermal insulation layer on steelprofile supporting decks.

As materials for thermal insulation layers werecommend:

Quality assured rigid polystyrene foam thermal insulation boards with rebatededge.

Non-flammable mineral fibre boards. We recommend boards with increased compression strength (compressive strain at10 % compression set min. 0.06 N/mm2

Insulation materials that are not dimensionallystable and which buckle or bulge must not beinstalled.

The insulation boards must be laid with pressed joints in bond.


Lower protection layer

Under the sealing a FDT synthetic fleece protection 300 g/m2 is applied. In case ofextensive green roofs and polystyrene thermalinsulation layers you may also use FDT glassfleece 120 g/m2.

The protection layer provides reliable protec-tion of the sealing against mechanical impactoriginating from the substrate and preventsinteraction e.g. with rigid polystyrene foam.


Sealing

Green roof areas are sealed with loosely laidroofing membranes Rhenofol CG, at least 1.5 mm thick. Place ballast immediately ontoloosely laid roofing membranes to secure itsposition against wind uplift.


Perimeter fixing

In principle, you will need perimeter fixing (at least 4 single fasteners/m or fixing withRhenofol coated metal sheet) at all flashingsand cappings, built-in details etc.

Upper protection layer

As an upper protection layer, 1.1 mm thickRhenofol TS membranes (non-rigid PVC withfleece backing) are installed with butt-joinedseams that are welded over with 10 cmRhenofol strips.

At flashings and cappings a separate flashingstrip is used loosely overlapping the protectionlayer at roof level by 25 cm.

With extensive green roof systems instead ofRhenofol TS a min. 0.2 mm thick PE foil can beapplied as an upper separation layer, providedthat on top of the PE foil a drainage layer isinstalled serving as upper protection layer atthe same time.

For compatibility reasons coarse rubber protec-tive sheets must be laid on a separation layer(e.g. synthetic fleece).




Roof garden system/position stabilityFlashings and cappings/built-in details

Roof gardens system/position stability

Planting of the roof is done with standard roofgarden systems.

You must use only drained green roof systems,since the described sealing build-ups are notdesigned for storage irrigation.

Note:

As regards green roof layers (drainage, filterand vegetation layer), the instruction of themanufacturer of the green roof system mustbe observed.

The green roof build-up in many cases providesposition stability against wind uplift at thesame time.The calculated wind loads must be observed.Only the dry weight of the green roof build-upwill be taken into consideration.

If the green roof system does not provide sufficient ballast, e.g. in case of lightweightextensive green roofs at the perimeter and corner areas of the roof, the roofing mem-brane must be mechanically fastened in theseareas, e.g. at the overlapped membrane edge.Spacing of the mechanical fastening is normal-ly done with respect to the overall wind load.In this case, the weight of the green roof layersshould not be taken into consideration.






All flashings and cappings are also carried outwith Rhenofol CG flashing strips.

The flashing strips must be sufficiently fixed. If the connecting membrane is bonded, then at flashing heights over 20 cm a full-size adhesive bond is necessary. Valley areas are left unbonded at a width of 20 cm to allowmovement compensation.

With mechanical fastening of the flashingmembrane with Rhenofol coated metalsheets or by clamping with the mounting railof the roof edge trim the spacing betweenthe in-line fasteners must be not more than 50 cm. In this case the whole girth length mustbe taken into consideration. The width of theRhenofol coated metal sheets for intermediatefixing must be at least 5 cm.

All flashings and cappings, roof penetrationsetc. must be kept free of vegetation. Pavingslabs in a fine gravel bed are most suitable forthese purposes.

Roof outlets should be at least 50 cm awayfrom all edges of the building as well as fromjoints and penetrations. Besides this, they mustbe designed to be accessible at any time.

At all flashings the sealing must be taken up atleast 15 cm over the surface of the green roof,fixed with mounting rails and made rain-proof.


Roof gardenswith Rhenofol CG, loosely laid with ballastTechnical details 61

ParapetNon ventilated roof

Scale 1:5

Reinforced Concrete




Rhenofol CG 1.5 mm



Thermal Insulation


Capping


Cladding

Paving Slabs

Separation Layer, PE-Layer 0.2 mm

Drainage Mat

Vegetation Mat


Roof gardenswith Rhenofol CG, loosely laid with ballast Technical details62


Scale 1:5

Reinforced Concrete



Separation Layer Glass Fleece

Rhenofol CG

PE Layer

Drainage Mat

Min. 50 mm round washed Gravel 20/40 mm


Welding

Rhenofol-Paste

Rooflight with Thermal Insulation


Render

Vegetation Mat



Rainwater outlet with GravelNon ventilated roof

Scale 1:5

Reinforced Concrete




Rhenofol CG

PE Layer


Rainwater Outlet Fixing

Welding

Rhenofol C-Collar


Round washed Gravel

Drainage Mat

Vegetation Mat

Roof gardenswith Rhenofol CG, loosely laid with ballast


Roof gardenswith Rhenofol CG, loosely laid with ballast Technical details64

Scale 1:5

Intensive roof garden with Rhenofol CGParapetNon ventilated roof

Reinforced Concrete

Concrete to Falls




Rhenofol CG



Soft Sand

Paving Slabs


Rhenofol TS-Flashing Strip

Wall Connection Profile

FDT-Acrylic Paste

Cladding

Cladding Support

Cladding


Drainage Mat

Drainage Mat

Vegetation Mat



Scale 1:5

Rainwater Outlet with ConcreteNon ventilated roof

Reinforced Concrete




Rhenofol CG

Concrete


Rainwater Outlet Fixings (3 Gully)

Grating


Welding

Rhenofol Collar


Drainage Mat

Drainage Mat

Vegetation Mat

Roof gardenswith Rhenofol CG, loosely laid with ballast


Data sheets

Product information

Accessories

66


Roofing membrane Rhenofol CVData sheet 67

Roofing membrane Rhenofol CV

Material properties

Roofing membrane according to DIN 16734.

Weather resistant. Meets the DUD

requirements. Resistant to UV-radiation. Resistant to flying sparks

and radiant heat accordingto DIN 4102, confirmed byofficial test certificates.

Building materials class B 2,DIN 4102.

Resistant to standardexhaust gas from industrialand heating plants.

Outstanding resistance tonatural ageing.

Not resistant to:

Materials containing bitumenand tar; organic solvents such as benzene, toluene,hydrogen chlorides; fats, oils,such as oily cements and forming oils. Not compatiblewith rigid polystyrene foam.

Profiled steel decking, corrosion protected Vapour control layer PE Thermal insulation layer FDT glass fleece 120 g/m2



Rhenofol CVThe roofing membrane for mechanically fastened layer build-up

Rhenofol CV is a product made of non-rigid polyvinyl chloride (PVC-P), a synthetic fibre reinforced roofing membrane according to DIN 16734. Owing tothe outstanding material characteristics, roofing membranes Rhenofol CV are suitable for single-ply application.Seam overlaps can be practically sealed with solvent or hot air welding.

Quality assurance

Rhenofol CV is subject to con-stant in-house and externalquality control. The in-housequality assurance system forthe whole company has beencertified according to DIN ISO9001, the worlds most strictquality standard, and is constantly monitored by TV CERT.

Range of application

As top weather-exposed roofsealing with mechanicallyfastened layer build-upwithout ballast, especially formovable lightweight roofs.


Roofing membrane Rhenofol CV Data sheet68

Roofing membrane Rhenofol CV

Physical data

Max. tensile force 16726 N/5 cm > 1000s. 5.6

Elongation at max. 16726 % > 15tensile force s. 5.6

Tear-growth resistance 53363 N > 200

Resistance to hydrostatic 16726 watertightpressure s. 5.11

Resistance to perforation 16726 watertight ats. 5.12 fall 500 mm

Dimensional stability after 16726 % 0.2warm storage (6 h, 80 C) s. 5.13

Bending at low 53361 no crackstemperatures at 30 C

Water vapour diffusion 16726 (air = 1) 18,000resistance coefficient s. 5.15

Area compression strength N/mm2 10(no pressure on edges)

Thermal conductivity 52612 W/m x K 0.16

Hail resistance SIA 280 passed

Material Colour1) Thickness Width Length Weightmm m m kg/m2

Rhenofol CV light grey/dark grey 1.2 2.05 20 1.471.2 1.50 20 1.471.2 1.03 20 1.471.2 0.68 20 1.471.5 2.05 15 1.851.5 1.50 20 1.851.5 1.03 15 1.851.5 0.68 15 1.851.5 0.50 15 1.85

1.8 1.03 15 2.25

1.8 1.50 15 2.25

1.8 2.05 15 2.25

2.0 1.50 15 2.48white/dark grey 1.2 1.03 20 1.47

1) Other colours on request.

Forms of supply

Properties Testing according Unit Valueto DIN


Roofing membrane Rhenofol CGData sheet 69

Roofing membrane Rhenofol CG

Material properties

Roofing membrane according to DIN 16735.

Non-shrinking according toDIN 16726 testing.

Weather resistant. Resistant to UV-radiation. Meets the DUD

requirements. Resistant to root pene-

tration according to FLLtesting, tested at 1.5 mmand 1.2 mm thick roofingmembranes.

Date post:	30-Oct-2015
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TM Rhenofol E

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