A 0.22 mm thick, polyethylene based, vapour control layer. SarnaVap 1000E is manufactured from special types of polyethylene, blended to produce a vapour control layer that is flexible when cold, resistant to chemicals and ageing and rot proof. It is suitable for use in most mechanically fastened systems.
- Moisture vapour transmission rate: 0.44 g/m²/24h.
- Water vapour resistance: >800 MNs/g.
Loose laid over any smooth surface with all side and end laps overlapped a minimum 80 mm, then sealed with SarnaVap jointing tape. At parapets and upstands, SarnaVap must be carried up to the upper edge of the thermal insulation and sealed to the upstand/ penetration with SarnaVap jointing tape, to form an airtight seal. When installed vertically, SarnaVap must be mechanically fastened along its top edge.
If the surface is rough, a layer of Sarnafil Type T should be used as cushioning layer.
Standard product features
Low density polyethylene (LDPE).