DUO TWO LAYER MEMBRANES A two-layer torch applied membrane designed for use on exposed architectural flat roofs, podium decks, balconies, and terraces. DUOTHERM WARM ROOFS A light-weight, thermal roofing system designed for use on exposed architectural flat roofs, podium decks, balconies, and terraces. DUO GREEN ROOFS A two-layer torch applied membrane designed for use on green roofs, roof gardens, planter boxes and courtyards. DUO NO FLAME COLD APPLIED SYSTEMS A two-layer, fire resistant system. Base sheet is mechanically fastened or self-adhered to substrate and cap sheet is glued over top.