Partially or fully non-combustible and vapour permeable pliable building membrane and associated methods

Abstract

The pliable building membrane 1 is a non-flammable inorganic fabric 2 defining a first planar side 4 and a second opposite planar side 5. A halocarbon polymer in the form of a fluorocarbon polymer 3 is impregnated into the first planar side 4. The halocarbon polymer may be polytetrafluoroethylene (PTFE), fluorin plastic, ethylene tetrafluoroethylene and/or a tetrafluoroethylene perfluoro propylene co-polymer, for example. Various embodiments have differing ratios of halocarbon polymer to non-flammable fabric and this influences its vapour permeability. A suitable minimum target vapour permeability is approximately 0.15 μg/N·s. An embodiment having a 1:1 ratio has a vapour permeability of approximately 1 μg/N·s, which is well suited for use as a sarking-type material. The non-flammable fabric 2 may be a satin-weave fiberglass fabric or other non-flammable fabrics, such as basalt fibre fabric, or carbon fibre fabric, for example.

Dependencies are inferred from the claim text.