The commercial built-up roof system, or asphalt flat roofing, consists of multiple plies of roof felts laminated with bitumen (typically asphalt). The asphalt or coal tar is heated in a kettle or tanker and then applied by mop or mechanical spreader. Cold-applied adhesives typically are solvent-based asphalts that do not have to be heated in a kettle or tanker. The most common surface for built up roof systems consists of gravel with a heavy application of asphalt or coal tar. The number of plies in a cross section is the number of plies on a roof: the term “four plies” denotes a four ply roof membrane construction. Sometimes, a base sheet, used as the bottom most ply, is mechanically fastened. Built up roofs generally are considered to be fully adhered if applied directly to roof decks or insulation.
Call Dunlap Roofing Company, your best option for maintenance and installing built-up commercial roofing systems in Fresno, CA.
Roof maintenance is vital to the longevity and proper performance for the life of the roof. The condition of the roof at the time of re-roofing could also play a factor in the re-roofing choices available to you.
Have a leak in your business’ ceiling? Notice peeling shingles on your house? Has a storm come through and possibly damaged your roof? We offer roof inspections and repair for all kind of roofs in Fresno, CA.
We are the best team to call for your commercial and residential roof maintenance & repair in Fresno, CA. Our programs offer you peace of mind, ensuring complete roof repairs and inspections thorough moisture detection, rock removal, wind and hail damage checks and more.