Built - Up Roofs

A Hot Asphalt built up roof consists of, plies of reinforcing material (organic felts, fiberglass, or polyester), inter-ply layers of bitumen (asphalt), finishing with the final surface of materials such as gravel, mineral surfaced cap sheets, or reflective coatings.

Cold Process, an alternative to traditional built up roofing, gets it name from the simple fact that hot asphalt is not utilized. In place of hot asphalt, “cold” asphalt emulsions or adhesives are applied between polyester mats or fiberglass base sheets. The finish surfacing is then applied to complete the process. (There are now solvent free options available. Offering a near odor free application.)

The redundancy of a built up roof system- it’s layer upon layer nature provides extreme durability. The number of plies and the materials used for surfacing can be varied to adapt the system to virtually any environmental or aesthetic concerns.

From hot asphalt to an odor free cold process; Built up roofing has and will continue to withstand the dynamic weather of the Pacific Northwest for decades.