However rubber roofs have many inherent.
Gravel on rubber roof.
The gravel or stone that is between the old roof and the new rubber membrane we have installed serves as insulation.
Gravel is an excellent fire.
We have been installing rubber roofs over gravel for over 20 years.
Being made of synthetic rubber or polymer they are flexible and elastic and can handle temperature changes and some impact types better than built up roofs.
The main reason for such popularity of rubber roofs is the lower initial price tag.
Finding a leak in a sea of gravel can be very difficult even more difficult if the gravel has been set in a layer of hot asphalt.
Modified bitumen roofs are a mix of asphalt and rubber with a layer of gravel embedded in the top layer of material during manufacture to provide uv protection.
These roofs are installed as thin sheet materials 0 030 30 mils to 0 060 inches 60 mils thick and are applied to the roof in a single layer.
No additional gravel on the roof is required.
Once made of tar paper these types of roofs gradually are using more advanced materials such as fiberglass membranes.
There are two main types of burs or tar and gravel roofing systems modified bitumen roofs which are a mix of asphalt and rubber with a layer of gravel on top and ballast roofing which is a different style of larger gravel applied on top of a single ply roofing system.
Owens corning deckseal sa sbs cap 39 375 ft w x 32 833 ft l 100 sq ft shasta white roll roofing.
Built up roof bur the traditional hot tar and gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone.
Every modified bitumen torch down roof comes with a 40 year warranty.
Generally the weight for a gravel coated roof must be within 10 25 pounds per square foot.
Rubber roof installation over a gravel roof video showing how we do it.
If you are considering replacing an old tar and gravel roof make sure to consult a qualified roofing contractor to explore your best options.
Most people refer to a flat roof as a rubber roof.
The fact that the gravel collects dirt and moisture can make patching the leaks just as difficult once they have been located.
