Hot Mop And Gravel Roof

A 2 ply hot mop underlayment protected from sunlight might last longer.

Hot mop and gravel roof.

In the past most commercial buildings and other flat top structures including homes were topped with tar and gravel roofing. A built up hot mop roof consists of layers of felt and asphalt over a bed of rosin paper. The pros of the hot mop option. It involves spreading a layer of hot asphalt on the base layer of the roof.

A modified bitumen cap sheet is then applied to the asphalt and both layers are nailed to the roof. Flashing is used around roof features as required. This roof is actually an arrangement of various layers of felt and asphalt finally topped off with a layer of gravel. Good workmanship especially around flashings is critical for a long service life.

The average lifespan for a 3 ply hot mop roof in florida 15 years. A tar and gravel roof or built up roofing consists of several layers of waterproof material alternated with hot tar and a surface layer of mineral aggregate often smooth river stone. Reflective gravel or a cap sheet limits sun damage and improves the roof s appearance. Because of the fumes released by liquefying asphalt hot mopping contributes to smog production.

This creates various layers which are then finished with a layer of gravel. While the installation process can be a messy one the price is exceptionally appealing to many homeowners. Hot mop roofing is a very dirty and somewhat dangerous job it s essentially putting molten asphalt tar over a roof. However we do occasionally see it on porch roofs on homes or other flat roofing area s also referred to as.

A hot mop roof is only used on flat and low roofs they are sometimes called tar and gravel roof. It s also called hot mop roofing or built up roofing because of the techniques used. Tar and gravel roofs consist of layers of tar and roofing. This surface layer weighs down the built up roof protects it from sun exposure and serves as decoration.

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. Comes with a warranty that is viewed as above average. To install torch down roofing roofers roll out sheets of a bitumen containing material. To install hot mop roofing roofers lay a synthetic base layer top it with a felt layer then pour liquid tar on the roof and spread this sealing compound with a mop which gives the process its name.

This hot mop roofing application is seen almost entirely in commercial buildings. The asphalt is applied to the roof using a heated mop. Hot mop roofs use a combination of felt and asphalt.