This is an old revision of the document!
Factors such as the pitch (the angle) of your roof, features like chimneys and skylights, and the roof size all affect the time and effort — and so the cost — of the replacement. How long a flat roof lasts depends on the materials used and maintenance performed. For example, a modified bitumen roof or a built-up roof can last for 10–20 years. Products such as thermoplastic polyolefin and spray-on coatings of polyurethane foam, acrylic, or silicone may be just as durable. They are typically composed of a single layer of waterproof material, often a deck board with felt and adhesive layers, but sometimes a sheet of metal. Like most significant home improvement projects, you need to get a building permit when you replace your roof.
If you adored this article and you would like to receive additional information relating to Wiki.rolandradio.Net kindly browse through the web-page.