Built-Up Roofing (BUR)

BUR systems generally are composed of alternating layers of bitumen and reinforcing fabrics that create a finished membrane. 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.

The reinforcing fabrics also are called roofing felts or ply sheets. Roofing felts are reinforced with either glass-fiber mats or organic mats.

The bitumen typically used in BUR roof systems is asphalt, coal tar, or cold-applied adhesive. The asphalt or coal tar is heated in a kettle or tanker and then applied by mop.

If you have any question about the products we carry, call our technical sales professionals and they will help you find the best solution for your home, job or client. Call us now at (808) 841-5677.