Installing TPO membrane over a gravel roof
We mechanically attach 1 inch polystyrene insulation over the existing gravel because the polystyrene is soft it levels out the roof
We mechanically attached a 60 mil TPO roof
Seams are welded with a hot air welder. Good welds are essential for trouble-free single-ply roofs. Installers are very important in ensuring welds are done well, both in the overlaps and in the flashings. Strong welds are a key to making sure the final installation functions as a single sheet of membrane covering the entire roof.
When the roof has gravel on it it, may not be the most economical choice for a seamless liquid applied system.
What is TPO?
Thermoplastic Polyolefin (TPO) is a single-ply reflective roofing membrane made from polyprophylene and ethylene-propylene rubber polymerized together. It is typically installed in afully adhered or mechanically attached system, allowing the white membrane to remain exposed throughout the life of the roof. The first sheet of TPO roofing membrane was installed in 1989 and since then millions of square meters of TPO has been installed worldwide.
Cooling Degree Days
TPO roofing membranes are highly attractive in regions with more cooling degree days – when cooling equipment is used – than heating degree days. TPO membranes reflect UV radiation keeping the surface of the roof and the building cool during summer months. This helps reduce cooling costs, and also decreases the amount of carbon emissions.
Reflectivity & Sustainability
Many companies and organizations are thrilled with the environmental benefits of TPO membranes. The Earth Rangers Centre (ERC) in Woodbridge, Ontario installed an UltraPly™ TPO roof on their office building, which is currently one of the most energy efficient buildings in Canada. Operating at less than 9kWh per square foot, and using nearly 90% less energy than other buildings of its size, TPO provided the reflective roof that works in conjunction with skylights and solar panels that helped ERC reach that impressive level of sustainability.