The asphalt is applied to the roof using a heated mop.
Rolled hot mop roof.
In the past most commercial buildings and other flat top structures including homes were topped with tar and gravel roofing.
Flashing is used around roof features as required.
Reflective gravel or a cap sheet limits sun damage and improves the roof s appearance.
It involves spreading a layer of hot asphalt on the base layer of the roof.
It s also called hot mop roofing or built up roofing because of the techniques used.
The pros of the hot mop option.
Because of the fumes released by liquefying asphalt hot mopping contributes to smog production.
Comes with a warranty that is viewed as above average.
A modified bitumen cap sheet is then applied to the asphalt and both layers are nailed to the roof.
A built up hot mop roof consists of layers of felt and asphalt over a bed of rosin paper.
This is definitely a professional only roofing category.
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.
Hot mop roofing is a very dirty and somewhat dangerous job it s essentially putting molten asphalt tar over a roof.