In the summer it gets very hot at our property, do temperatures above 30oC affect a Torchon membranes performance?
A. As Torchon membranes are thermoplastic, i.e. they soften with heat and harden with cold, the choice of membrane for your area is important. There are dozens of membrane types available to suit from -20oC up to +50oC. As NZ is a temperate climate without real extremes of temperature almost all APP or SBS modified Torchons will provide excellent performance. Mineral surfaced membranes provide the best protection against UV.