Gravel roofs our experience is that most gravel roofs are 3 ply hot mopped asphalt built up with a gravel finish applied.
Gravel surfaced built up roof.
Aggregate surfacing has been applied to built up roof systems for over a century.
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 built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof.
Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.
In order to make the proper repairs a few materials are needed.
Built up roofing systems have been in use in the u s.
National roofing contractors association.
This photo shows a split in a gravel surfaced built up roof that was causing some severe interior damage.
National roofing contractors association.
When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.
For over 100 years.
1 gallon of roofing cement.
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.
Built up systems are installed by alternating layers of asphalt or tar and supporting fabrics directly onto the roof.
Cellulose insulation manufacturers association.
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.
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.
A rubber glove to spread the roofing cement.
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.
Built up roof membrane smooth surfaced membrane only 0 24.
Built up roof membrane gravel surfaced membrane and gravel only 0 33.
Cellulose blown attic 3 8.
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.
National roofing contractors association.
