SPECIFYING INSULATION FOR INVERTED FLAT ROOFING  When specifying insulation for inverted Flat roofing, Extruded Polystrene (XPS) brand Dow STYROFOAM™ is perfect as the flat roof is among the most exposed part of a building. So proper structural composition is a determining factor for the life expectancy of the roof. In flat roofs with conventional build-up, the … Continue reading Specifying Insulation for Inverted Flat Roofing