What is the difference between “built up”, “torch down”, and “spray foam”?
Built-up Roofing, commonly referred to as B.U.R., is the application of various levels of roofing material to “build up” a specified thickness of layers to protect your property. Different types of asphalt and tar make up the middle and finally it is coated with a finishing surfacing, such as gravel. Torch down is a type of roofing that involves rolling out a type of tar roofing material over the roof and then is melted, using a torch, to seal against the roof. This and B.U.R. have been popular “cost effective” options for larger projects, such as apartment complexes. However, especially with torch down, they are not usually the safest options in the dry desert climate and offer minimal energy efficiency. Spray foam is referring to Spray-Applied Polyurethane Foam. This revolutionary roofing material is not only safer and easier for both the roofer and the project, but it is part of a large movement towards “Building Green” around the world. The foam itself instantly beings to expand on
