Gravel Roof Weight

Contractors and builders use gravel on flat roofing for two primary reasons.

Gravel roof weight.

Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed. None asphalt roll roofing. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. The first one is used by all countries in the world and is defined to be equal to 1000 kg by the international body of standardization.

The ton is currently only used in the united states and is equal to 2000 pounds 2000 lbs. 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. The last things to assess are the estimated weight of the required gravel and its cost. Gravel to protect built up.

Gravel roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable. To weigh down or secure the roofing material as is the case with single ply flat roofs. There are different types and weights of gravel used on flat roofs for these purposes. Felt tar and gravel roofing 3 ply 4 8 lb m ft 2 23 4 kg m 2 felt tar and gravel roofing 4 ply 5 3 lb m ft 2 25 9 kg m 2.

When calculating the gravel weight make sure you do not confuse the tonne metric ton with the ton short ton. To protect the underlying layer of roofing materials as is the case with built up roofs burs. The weight of roofing constructions above the truss rafter may be estimated with the calculator below. Knowledge about the weight of the cargo may come in handy when it comes to transportation.

Generally the weight for a gravel coated roof must be within 10 25 pounds per square foot. Gravel is used on flat roofs for two reasons. Tar and gravel roofs sometimes referred to as conventional built up roofing or bur roofs tar and gravel roofing is a system of flat roofing protection that is budget friendly and can have a lifespan of up to 30 years. You can calculate the required volume of gravel by multiplying the gravel path area by the desired thickness.

If you have a home with a flat roof a tar and gravel roof may be a good option for you. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. The single ply membrane and other roof components including thermal insulation are loose laid. 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.

Gravel roof advantages most gravel roofs are inexpensive to build offer some protection to vulnerable asphalt against uv damage and the stones are very durable. 23 yd 0 1 yd 2 3 yd.