Slate roofing 3 16 inch slates.
Hot mop roof layers how many.
Slate roofs national slate association 1926.
This roof is actually an arrangement of various layers of felt and asphalt finally topped off with a layer of gravel.
This may sound simple but there many different possibly hundreds of variations of built up and hot mop roofing.
The hot asphalt is laid out evenly with a large heated mop over the surface.
A built up hot mop roof consists of layers of felt and asphalt over a bed of rosin paper.
This hot mop roofing application is seen almost entirely in commercial buildings.
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.
Because installing hot mop roofing involves so many steps and requires the roofers to toil over molten tar the process is often more difficult than torch down roofing.
This creates various layers which are then finished with a layer of gravel.
To install hot mop roofing roofers lay a synthetic base layer top it with a felt layer.
Slate roofs national slate association 1926.
Slate roofs national slate association 1926.
A 2 ply hot mop underlayment protected from sunlight might last longer.
It s also called hot mop roofing or built up roofing because of the techniques used.
Hot mopped roofing cost vary depending on the quality and layers of roofing you are having applied.
Torch down roofing on the other hand consists of fewer steps and.
Usually hot mopped is less expensive to install than torch down.
Hot mop roofs use a combination of felt and asphalt.
The average lifespan for a 3 ply hot mop roof in florida 15 years.
They are designed for roofs with shallow pitches where the rise is no more than 4 inches in every 12 inches.
The asphalt is applied to the roof using a heated mop.
On a flat roof the top layer should should have gravel a mineral surfaced cap sheet or a reflective aluminum coating.
Comes with a warranty that is viewed as above average.
The pros of the hot mop option.
Slate roofing 1 4 inch slates.
However roofing professionals installing a hot mop system may be exposed to fumes longer and need to take precautions to protect themselves.
Hot mopped roofs are durable low cost options compared with others types of roofs.
Advantages of torch down roofing.
Slate roofing 3 8 inch slates.
There are many advantages to torch down roofing.
With a base sheet plus three layers you can expect from 600 850 a square depending on installation requirements.
Good workmanship especially around flashings is critical for a long service life.
