Weight Of Ballasted Roof

Epdm roof membrane 60 mil fully adhered.

Weight of ballasted roof.

Last updated july 22 2020. Once completed the epdm membrane is held in place using one of the following materials as ballast with a minimum weight of 50 kg m. Extremely difficult to find a leak in this system since the membrane is well hidden. 52 5 97 65 kg.

Insulation membrane fasteners and adhesive typical installation weight is less than 2 pounds per square foot 10 kg per square meter when 060 thick membrane typically weighing 1 3 pound per square foot or 1 6 kg per square meter is utilized. The weight on a ballasted roof can be from 10 to 25 pounds per square foot meaning the substructure must be designed specifically to carry more weight than other roofing systems. Roofs with pavers as ballast can be used as outdoor patios. Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed.

The single ply membrane and other roof components including thermal insulation are loose laid. Ballasted roof dead load jike structural 19 jun 14 22 09. Gravel in form of round smooth river washed aggregate without broken pieces nominal 16 to 32 mm. Weight of roofing materials.

Multi story buildings and perimeters will often require more than 10 psf ballast for. 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. Lightweight interlocking pavers with integral cementitious coating the panels shall be interlocking and weigh a minimum of 4 0 psf. Other interlocking ballast pavers are available as well.

Roof perimeters and penetrations are flashed in accordance with firestone specifications pdf. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. Drawbacks of a ballasted roof system adds a lot of weight to the roof system typically 10 15 pounds per square feet. Previous all faqs next.

Slope design shall not exceed 2 inches in 12 inches. Epdm roof membrane 60 mil ballasted membrane and stone ballast only 10 75 20 lbs. A loose ballasted roof where you have 1 to 2 inches of gravel is more on the order of 12 psf. After combining the weight of components i e.

Perimeter attachment shall be designed to withstand a minimum load of 100 pounds per linear foot. 1075 2000 lbs. Check out eng tips forum s policies here.