Sepa Solar air barrier and vapour control layer is designed with a reflective surface to reduce heat loss through the roof. It features exceptional vapour resistance that exceeds BS 9250 requirements (Code of Practice for design of the airtightness of ceilings in pitched roofs) and can be used with other Klober airtightness products to minimise energy loss. Whilst it provides an R-Value of 0.5m2 K/W in the winter when used with a 20mm service void. The air barrier and vapour control layer prevents large volumes of water vapour entering a construction from the interior, particularly during the drying-out period, whilst providing additional support for insulation boards or quilts.
The inner face of an insulated roof, wall or ceiling, including timber frame.
Suitable for cold and warm roofs.
Installation Sepa Light should be laid in accordance with our installation
An unsupported underlay should provide a drape between rafters sufficient enough to ensure that water will run away from the batten fixing nail penetrations allowing draining from the eaves gutter
Sepa Light should be laid with a maximum drape of 15mm.