Roof Deck System - Tectum III

The Tectum III roof deck panel is a composite of a 1-1/2" or thicker Tectum substrate, Dow Styrofoam® brand XPS (extruded polystyrene) insulation 1-1/2" to 8" thick and 7/16" OSB (oriented strand board) sheathing with a slip-resistant surface. Components are bonded with code-listed structural adhesives. Tectum III panels are typically used in sloped applications where insulation and a nailable surface are required.