Tyvek® SD2-Air leakage barrier / vapour control layer
Tyvek® SD2 is an internal Air Leakage Barrier/Vapour Control Layer for roofs, walls and floors.
Installing Tyvek® SD2 as part of the internal lining will help to reduce the rate of heat lost by convection through the building fabric. A continuous layer of Tyvek® SD2 will provide a barrier to air movement around the habitable space of the building.
Tyvek® SD2 has been specifically developed for use as an air leakage barrier, but will also contribute in controlling the passage of vapour through a structure. This will particularly apply to ‘vapour open’ constructions where a vapour permeable membrane is specified externally.
The overall 'breathability' of the construction is maintained with Tyvek® SD2 providing a balance between internal and external vapour resistances.
|Composition||Spunbonded polypropylene and liquid applied polyolefin|
|Roll Size||1.5 m x 50 m|
|Roll weight||8.5 kg|
|Strength||Tyvek® SD2 is rot-proof and has a nail tear resistance of 260N. It is an extremely durable material.|