Gravel Surfaced Built Up Roof

National roofing contractors association.

Gravel surfaced built up roof.

Built up roof membrane smooth surfaced membrane only 0 24. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. Gravel to protect built up roofs a built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat roof. Surfacings for built up roof systems include aggregate such as gravel slag or mineral granules glass fiber or mineral surfaced cap sheets hot asphalt mopped over the entire surface aluminum coatings or elastomeric coatings.

Photo of an aggregate surfaced bur. You can choose the number of layers or plies that are installed. These roof systems are commonly referred to as tar and gravel roofs. 1 gallon of roofing cement.

Tar and gravel roofing tar and gravel roofs sometimes referred to as conventional built up roofing or bur roofs tar and gravel roofing is a system of flat roofing protection that is budget friendly and can have a lifespan of up to 30 years. Aggregate surfacing has been applied to built up roof systems for over a century. Gravel roofs our experience is that most gravel roofs are 3 ply hot mopped asphalt built up with a gravel finish applied. Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.

This acts as an adhesive when it cools. Cellulose blown attic 3 8. This photo shows a split in a gravel surfaced built up roof that was causing some severe interior damage. In order to make the proper repairs a few materials are needed.

If you have a home with a flat roof a tar and gravel roof may be a good option for you. National roofing contractors association. Cellulose insulation manufacturers association. Most houses with flat or nearly flat roofs are topped with built up roofing or tar and gravel roofing made from fiberglass based asphalt sheeting that is applied in layers with hot bitumen tar mopped on between each layer.

The aggregate which typically consists of gravel crushed rock or blast furnace slag is set in a uniform bitumen flood coat over the membrane surface. Pea gravel crushed rock and decorative rock white quartz are often dispersed into a flood coat of hot asphalt and applied over the top of the roof membrane. A rubber glove to spread the roofing cement. Built up roofing systems have been in use in the u s.

Built up systems are installed by alternating layers of asphalt or tar and supporting fabrics directly onto the roof. National roofing contractors association.