This ponded water also accelerates the deterioration of the asphalt roofing under the gravel.
Tar and gravel roof repair lethbridge.
Many residences are covered with a traditional tar and gravel roof system that has a life span of 15 25 years after which the stress of the heat and cold causes the tar to blister and crack allowing water to travel under the asphalt surface and leak through the roof deck below.
However with new technologies sbs or torch on roofs are now becoming more popular.
Tar and gravel had a lifespan of approximately 20 years but warranties were very limited.
Ten years ago the most commonly used roofing system in lethbridge on a low slope to flat roof was the tar and gravel system.
Repairing a tar and gravel is of course best left to the professionals and since a properly maintained bur roofing system can last for decades chances are you will have to repair your roofing system at some point during its existence.
After the tar and.
They are composed of layers of perforated felt or fiberglass material with asphalt in between flooding the top with asphalt and applying gravel to the hot asphalt.
The old system included layers of tar paper and hot asphalt with multiple applications to keep the water out.
Tar gravel roofs have been around for centuries.
Sbs roofs are more pliable and flexible they are resistent to the cold.
Tar and gravel roofs are a proven roof system and were at one time the most popular way of doing flat roofs.
Residential tar and gravel roofs.
Our journeyman roofers can handle any type of residential or commercial roofing job including asphalt shingles cedar shakes metal roofing tar and gravel and sbs torchdown.
Flat and low slope gravel roofs are some of the most difficult roof systems to detect the location of roof leaks and then repair.
Our high wind resistant applications involve the use of roofing cement to ensure your project withstands the elements.
The gravel hides the surface of the roof and often creates a water dam that allows water to pond for long periods of time.