Stiferite® GT3 are sandwich panels composed of a high performance insulation sandwich board made with STIFERITE GT, a rigid polyisocyanurate polyiso foam core, blowing without CFC or HCFC, coverd on both side with Duotwin® facing, and on one side torch bonded to a glass fiber reinforcement bituminous waterproofing membrane (unit weight 3 kg/m²). The board sides have 10 cm of selvage.

Main applications:
- thermal insulation and waterproofing base sheet of flat and pitched roof

Standard dimensions: 1200 x 1200 mm
Standard thicknesses: 20 - 30 – 40 – 50 – 60 – 80 – 100 - 120 mm