A modified bitumen cap sheet is then applied to the asphalt and both layers are nailed to the roof.
How to install hot mop roofing.
It involves spreading a layer of hot asphalt on the base layer of the roof.
At the same time a 90lb felt or modified bitumen cap sheet which is a type of asphalt that is modified with rubber or fiber is applied onto the hot asphalt.
Install the roofing screws vertically along each rib in the panel.
Nail 45 degree cant strips at all inside corners 12 inches on center using a hammer and roofing nails.
It truly looks like a bubbling witches pot before is goes on your roof although rectangular with an enclosed burner.
The washer under the screw head should seal to the surface of the panel without bulging or shifting.
Secure the screws but do not overtighten.
The process involves melting blocks of asphalt in a large metal cauldron.
I learned how to do built up roofing bur during my early years in the trade and my company continues to do it to this day.
During my 30 years in the roofing business i ve installed many types of roofing and seen a number of products come and go.
To begin the hot mop process a layer of hot asphalt will be spread on top of the roof s base sheet.
Liquid membrane roofing systems roof coating systems built up roofing systems modified bitumen sbs roofing systems ruberoid mop granule membrane a strong resilient non woven polyester mat that is coated flexible sbs polymer modified asphalt and is surfaced with mineral granules.
But one system that never goes out of style is the traditional built up hot mop roof.
When applying it as the first roof a base sheet is used to protect the raw wood surface.
The pros of the hot mop option.
Place the first screw about 7 inches from the bottom and each subsequent screw about 18 to 24 inches apart along the vertical run.
Use a staple gun to layer rosin paper lengthwise over the roof and cant strips.
How to hot mop a roof step 1.
Comes with a warranty that is viewed as above average.
This is where the professional commercial roofing company is at their most valuable.
The asphalt is applied to the roof using a heated mop.
Layer and nail base sheets shingle.
