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 ?g/N·s. An embodiment having a 1:1 ratio has a vapour permeability of approximately 1 ?g/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.

Abstract: A building or insulating panel (30) including a collapsible frame of generally square or rectangular configuration, which is collapsible between a generally flat condition and an erected condition in which it is installed. The frame including overlying top and bottom sheets (31,32) that are generally parallel and spaced apart in the erected condition of the frame by two webs (33,36) which are spaced apart to extend in generally parallel realationship lengthwise along opposite side regions of the frame. The webs (33, 36) extend substantially perpendicular to the top and bottom sheets (31, 32) in the erected condition and are disposed substantially parallel to the top and bottom sheets (31, 32) in the collapsed condition. The panel further includes reinforcing means (37) which is inserted between the top and bottom sheets (31, 32) when the frame is in the erected condition to reinforce the panel (30) against collapse.

Abstract: A building or insulating panel (30) including a collapsible frame of generally square or rectangular configuration, which is collapsible between a generally flat condition and an erected condition in which it is installed. The frame including overlying top and bottom sheets (31,32) that are generally parallel and spaced apart in the erected condition of the frame by two webs (33,36) which are spaced apart to extend in generally parallel realationship lengthwise along opposite side regions of the frame. The webs (33, 36) extend substantially perpendicular to the top and bottom sheets (31, 32) in the erected condition and are disposed substantially parallel to the top and bottom sheets (31, 32) in the collapsed condition. The panel further includes reinforcing means (37) which is inserted between the top and bottom sheets (31, 32) when the frame is in the erected condition to reinforce the panel (30) against collapse.