Vapour Barrier Roofing Membrane

A vapour barrier sometimes referred to as vapour retarder is typically a plastic or foil sheet used for damp proofing to prevent interstitial condensation from forming in various building assemblies such as walls roofs foundations and floors.

Vapour barrier roofing membrane.

Roofing vapor retarder air barrier. Sopralene 180 sp 3 5. The vapor barrier protects the roof insulation from the vapor included in the interior air. On the external side however not all vapour permeable membranes are suitable so for example an air permeable breather membrane would allow air leakage which would not.

Sopra 4897 is an sbs modified bitumen venting base sheet for use in approved multi ply membrane and flashing assemblies. If you want to run anything else by our technical team feel free. Certainteed s membrain continuous air barrier smart vapor retarder is the industry s most advanced technology to create a better performing home. A vapor barrier can be loose laid or fully adhered.

Moisture in homes is unavoidable making moisture in wall cavities nearly inevitable and dangerous if not properly addressed. They can be contacted by email. Enjoy your weekend terry. We re proud to bring you a range of choice from novia s excellent dual use foil tape to powerlon s ultrablock air barrier and plenty more besides.

Air permeable breather membranes using an air permeable breather membrane removes the need for a vapour control level because vapour and air can freely pass through the membrane and the. Vapour permeable breather membranes minimise the amount of water vapour that condenses within the roof or wall space helping to minimise damp mould and rot. An introduction to vapour barriers and vapour retarders. What is a vapour barrier.

Roofing membrane 18mm plywood or osb celotex vapour control layer 18mm plywood or osb joists. A loose laid vapor barrier is just a big sheet of 6 mil plastic that is. Comparatively a vapour barrier prevents any movement of vapour or air occurring through the building instead of just limiting it to a controlled level. You ll find pitched roofing products here.

Reduce heat loss and boost energy efficiency with market leading vapour control layers vapour barrier membrane and vapour control barriers. Sopra 4897 is composed of a proprietary formulation of elastomeric styrene butadiene styrene sbs polymer modified bitumen. Technical celotex co uk or by phone on 01473 820850. This vapor if left unchecked can wet the insulation and over time will reduce the r value of the insulation and lead to mold.

A polythene vapour barrier limits the movement of air and water vapour through a membrane so a vapour control layer is air permeable or vapour permeable.