Webo Class I – Very low permeability vapor retarders – rated at 0.1 perms or less. Sheet polyethylene (visqueen) or unperforated aluminum foil (FSK) are Class I vapor … WebA vapour barrier is required by the National Construction Code (NCC) Volume Two under slab-on-ground construction for all Class 1 buildings and Class 10 buildings where the slab is a continuation of the Class 1 slab. ... As stated above, a vapour barrier is required by the NCC under slab-on-ground construction for all Class 1 buildings and ...

STEGO WRAP VAPOR BARRIERS & RETARDERS

WebTABLE R702.7(1) VAPOR RETARDER MATERIALS AND CLASSES . CLASS ACCEPTABLE MATERIALS I Sheet polyethylene, nonperforated aluminum foil, or other … WebOct 7, 2024 · A vapor retarder is any material that limits the transmission of water vapor. If you’re using unfaced fiberglass insulation, a suitable vapor retarder is a 2-mil nylon film … pump bottle misters

Vapor Retarder Classification - Energy

WebNov 13, 2024 · There are three classes of vapor retarders. The lower the perm rating, the less diffusion (i.e., less drying) occurs through a material. • Class I, Impermeable (vapor-proof), ≤ 0.1 perm: Built-up roofing … WebClass I – Very low permeability vapor retarders – rated at 0.1 perms or less. Sheet polyethylene (visqueen) or unperforated aluminum foil (FSK) are Class I vapor … WebStego® Wrap Class A Vapor Retarder (10-MIL) Stego Wrap Class A is used as an exceptional vapor retarder, and as a protection course for below grade waterproofing applications. Details Stego® Wrap Vapor … sebring water service