Roof Gravel Weight

The first is to protect the underlying layer of roofing materials on built up roofs burs and the second is to secure or weigh down the roofing material as is the case with single ply flat roofs.

Roof gravel weight.

Gravel is used on flat roofs for two reasons. Contractors and builders use gravel on flat roofing for two primary reasons. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m2.

Generally the weight for a gravel coated roof must be within 10 25 pounds per square foot. 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. To protect the underlying layer of roofing materials as is the case with built up roofs burs. To weigh down or secure the roofing material as is the case with single ply flat roofs.

Sika s experts provide assistance to benefit your business. Felt tar and gravel roofing 4 ply 5 3 lb m ft 2 25 9 kg m 2 felt tar and gravel roofing 5 ply 6 1 lb m ft 2 29 8 kg m 2 felt tar and slag roofing 3 ply 4 5 lb m ft 2 22 kg m 2. The gravel ballast secures the roof waterproofing against wind uplift forces. Gravel to protect built up.