Rolled Hot Mop Roof

The pros of the hot mop option.

Rolled hot mop 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. This hot mop roofing application is seen almost entirely in commercial buildings. Comes with a warranty that is viewed as above average.

In the past most commercial buildings and other flat top structures including homes were topped with tar and gravel roofing. Reflective gravel or a cap sheet limits sun damage and improves the roof s appearance. The asphalt is applied to the roof using a heated mop. Hot mop roofing is a very dirty and somewhat dangerous job it s essentially putting molten asphalt tar over a roof.

It s also called hot mop roofing or built up roofing because of the techniques used. If you ve ever seen a hot mopped roof install you ll be thankful your not the one doing it. 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. To install torch down roofing roofers roll out sheets of a bitumen containing material.

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.