Inverted Roof Insulation: XPS Boards Over the Waterproofing Membrane

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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

Green Roof Anti-Root Membrane: Waterproofing Planted Roofs with SBS Rolls

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A green roof anti-root membrane is the waterproofing layer that stays sound under soil, water and living roots. A planted roof keeps the membrane damp most of the time. Meanwhile, roots search for any weak point in it. So a normal roof build-up is not enough. This guide covers the membrane, the protection layer, the edge details and testing, and ... Read More