Did you know we offer flat roofing quotes and estimates in Ottawa Ontario. We’ve done a study recently about flat roofs and results are in.
Most flat roofs in Ottawa Ontario are tar and gravel but there is a new trend that is going to change that. Any regular tar and gravel roof weights 3 times more than Torchon Roofing (modified bitumen) including the insulation and the metal.
During a flat roof replacement in Ottawa we kept records of the dump fees and the total waist that was removed from the existing tar&gravel flat roof to the landfill. When all the separate trips to the landfill was added at the end of the removal, we ended up with 15000 KG. New roof material was 5500kg including 2 inch insulation, 1/4 protection board,(proboard) 180FF Base membrane and 250 Cap membrane.
If all the flat roofs are light weight systems, it can avoid the possibility of the roof collapsing because of the extra weight of the snow and ice. There has been many incidents all around the world because of this issue and lives has been lost. Extra pressure from the snow and ice does cause stress to the structure and that is why the tar&gravel roof leaks are almost impossible to detect.