Gaf Non Vented Roof

Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price. The first step is to check out this 60 second video and learn about the 300 1 rule the difference between intake and exhaust ventilation and why proper ventilation is so important to get right to help calculate your attic ventilation needs visit gaf ventilation calculator. In order to qualify for windproven limited wind warranty coverage you must install gaf layerlock labeled shingles and at least four 4 qualifying gaf accessory products including gaf ridge cap shingles gaf starter strip shingles and a gaf roof deck protection product plus your choice of either a gaf leak barrier product or gaf attic.