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ProctorWrap Air Tight
wall applications

ProctorWrap Air Tight (AT) is a triple layer polypropylene textile developed primarily as a breatherable membrane for use with timber and steel frame wall construction behind rain screen cladding's and as a vapour permeable underlay for supported metal roof applications.

ProctorWrap AT affords effective protection during construction and for the life of the building against rain, snow and dust, and allows for the controlled escape of vapour from within the building whilst restricting the ingress of moisture. All Proctor Roofshield and ProctorWrap breathable (vapour permeable) membranes have a vapour resistance of not more than 0.5 MNs/g when tested to AS/NZS 4200.1.

In combination with taping overlaps, ProctorWrap AT forms an air tight wrap for the building reducing the loss of heated air or cooled air from the building thus improving the energy efficiency of the building envelope.

ProctorWrap AT is classified as light duty in accordance with the value specified for bursting strength. When used as a   Vapour Permeable Underlay in roof applications additional safety measures should be taken such as a suitable supporting substrate or a safety net/mesh deemed acceptable to OH&S authorities.

A product identifier code is printed on the underside of the membrane at 1m intervals. This product has been manufactured in conformity with EN 13859-1:2. Quality control checks on the finished product include:

• Weight
• Tensile strength and elongation
• Tear
• Water resistance
• Dimensional stability
• Water vapour transmission
• Reaction to fire
• Properties after artificial ageing