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11 Examples for
System Components
This chapter is taken up to give some examples of system
components. For further information about Icopal system
approvals please contact Icopal technical services.
11.1 Vapour Control Layers (vcl)
The presence of a vapour control layer helps to maintain the
airtightness of the roof.
The specification of the vapour control layer is dependent upon a
number of factors, such as deck type, method of attachment of vcl
and method of attachment of the insulation and waterproofing.
Icopal supplies a range of high performance polyethylene and
bituminous vapour control layers for use with its single-ply
roofing systems.
11.1.1 Polyethylene Membranes
For mechanically fastened situations, the Monarflex range of
reinforced polyethylene vcls provide a quick and cost effective
method of vapour control.
These membranes are loose-laid with laps sealed with Monobond
LT tape, and are secured to the roof deck through the mechanical
fastening of the insulation board.
Monarflex multi-layer VCL's are manufactured from virgin
polyethylene with built-in reinforcement grids of HDPE making
them highly resistant to tears and damage. Some also have a layer
of aluminium foil for higher water vapour resistance performance.
For further guidance and product information contact Icopal
Technical Services.
Installation of Loose Laid Polyethylene Membranes
• Lay Monarflex vapour control layer without folds or wrinkles
allowing for minimum 100mm side and end laps. Seal all laps
with Monobond LT double-sided sealant tape. Turn the vapour
control layer up at all upstands, kerbs and penetrations etc. to
maintain an air tight barrier.
11.1.2 Bituminous Membranes
Icopal heat-activated self-adhesive vapour control layers are
manufactured from SBS-modified bitumen and reinforced with
an extra strong glass fibre fleece with a PET aluminium foil.
Some examples:
- Micoral SK has a blue SYNTAN resin upper surface allowing the
appropriate insulation board to be adhered using Icopal Insulation
Adhesive.
- VillaselfSK is a self adhesive vapour barrier with exelent
characteristics.
- Micoral NB is finished with a polyethylene film, and is suitable
for use in mechanically fastened applications only.
These membranes are suitable for direct use on metal, timber and
concrete deck types only.
- Also available are Total Torch VCL, and Micotherm SK. Please see
individual product literature for further information.
Since these membranes are adhered, they can provide a
weatherproof temporary finish to the roof structure prior to the
application of the insulation and final waterproofing system.
Monarplan
®
Installation manual
062014V1
41
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