Inverted Roof Insulation: XPS Boards Over the Waterproofing Membrane

Inverted roof insulation places the thermal boards above the waterproofing membrane, not below it. That simple change protects the membrane from heat, sun and site traffic. In Egypt’s hot summers, therefore, the inverted order matters a great deal. This guide explains the layer order, the board data that matters and how Target builds these roofs. Contents Conventional vs inverted roof ... Read More