Built Up Roof Repair

Built-up roof (BUR) membranes are composed of bitumen (asphalt or coal tar) and glass fiber, polyester or organic reinforcing felts. The membrane is typically surfaced with aggregate, mineral granules or liquid applied coatings.

Asphalt-based products should typically be used for the repair of asphalt BUR and coal-tar based products should typically be used for coal tar BUR. However, asphalt-based products are routinely used for the construction of base flashings in coal tar BUR.

Elastomeric roof coatings may also be used to fix roof leaks and extend the service life of built up roofing.