Too much gravel can result in a structural issue due to weight.
Gravel ballasted epdm roof.
Ballasted roof systems have been installed since the early 1970 s.
Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane.
Ballast is commonly used with roofs made of tar and gravel roof alternatives including ethylene propylene diene monomer epdm polyvinyl chloride pvc and thermoplastic polyolefin tpo single ply flat roofs.
Magazine and roofing southwest.
Holes mean roof leaks and roof leaks mean call the roofer.
They are known for their installation speed and pleasing aesthetics.
The gravel in a ballasted roof helps absorb heat preventing the sun from heating the roof materials below and making the roof more energy efficient.
Most ballasted roof systems use gravel stone that is similar to what would be used in landscaping.
It is very important to note that the amount of gravel being applied to a roof must be precise it depends on the specific roofing spec being used and the building type.
Despite the positive qualities associated with a ballasted roof system there are some challenges.
Ballasted flat roofs are a popular choice especially for commercial buildings.
Firestone epdm ballasted system application.
Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis.