Weight Of Green Roof Per Square Foot

None asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 asphalt shingle or asphalt fiberglass composite shingle 2 7 lb m ft 2 13 2 kg m 2.

Weight of green roof per square foot.

Here is a list of sample roofing material weights per 100 square feet. In this table the density of different species of wood is expressed as weight in pounds per cubic foot and kilograms per cubic meter. Therefor a significant amount of attention must be paid to the various waterproofing and root barrier details. The roof must also be capable of bearing the weight of a garden.

Asphalt shingles 3 tab or strip 1 95 lbs. In addition the weight also depends on the water buffering capacity of the drainage layer. Weight of standard sedum roof a standard sedum roof has a saturated weight of about 80 kg m. The weights of other actual products of the same type may vary.

The weight of roofing constructions above the truss rafter may be estimated with the calculator below. Weight of roofing materials. Intensive green roofs are essentially roof gardens and may also need to allow for the additional weight of paving and terracing furniture and even trees. Tray systems are not a viable option for intensive roofs due to the weight.

For plywood learn how to estimate the weight of plywood panels. The density or hardness of wood varies by species and the value is necessary to approximate the weight of lumber by volume. Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used. For example roofmeadow green roofs engineered to be both lightweight and efficient generally weigh about 6 75 pounds per square foot for each inch of media depth.

In fact with many heavy roofs fire fighters will not go inside the home to fight the fire if it has avery heavy roof on top. Aluminum shingles 45. The load increases with the use of heavier roofing material. If necessary this weight can be reduced to approximately 40 kg m for roofs that can only bear a lightweight green roof system.

Pounds per square foot lb ft 2 pounds per square 100 sq. Thus the saturated weight of a 3 inch deep system is about 20 pounds per square foot including a mature plant cover. A clay tiled roof may have a dead. Ft kilograms per square meter kg m 2 source.

A low weight roof also lessens the risk of a roof collapse if there is a fire inside of the home which reaches the attic. These are the weights of typical actual products. Density of wood species.