Roofing breather membrane information

Breather Membrane Info:

High Performance Breather Membrane

"Highly breathable waterproof membrane, constructed from high tensile spun-bonded polypropylene layers, around a microporous polypropylene film. The outer layer forms the functional waterproof surface, the middle layer is the breathable waterproof membrane, and the inner layer protects the membrane from abrasion and damage, also giving additional strength. This enables the fabric to allow moisture vapour to pass through, whilst remaining fully waterproof. Rubershield-PRO has a dark green upper surface, printed with the trade name and head lap lines.

Rubershield-PRO is a second-generation breather membrane, conforming to the highest performance and professional standards. Designed for use as a fully supported or unsupported breathable underlay for tiled, slated or metal roofing systems, Rubershield-PRO is a triple layer engineered fabric, ensuring full moisture vapour permeability, whilst maintaining the highest levels of water resistance.

The high vapour permeability and waterproof nature of the membrane, combined with excellent tensile/tear strength, make Rubershield-PRO the professional's choice as the ultimate breather membrane. It is equally suitable whether draped unsupported over rafters or laid directly over insulation. Rubershield-PRO allows the escape of water vapour from within the roof structure whilst protecting against wind driven rain, snow and dust which may penetrate the main roof waterproofing, providing a permanent quality breather underlay, which will last the life of the roof construction".

(Ruberoid, Breather Membrane, www.ruberoid.co.uk, 2006).

There are also several other manufacturers of quality breather membrane who's logos appear on the materials page.