Non Ballasted Roof

After combining the weight of components i e.

Non ballasted roof.

Section 1609 is title wind loads and contains the wind design speed maps and other pertinent roof wind uplift resistance requirements. What is the average unit weight of non ballasted epdm roofing systems. The gravel used in built up roofing what the roofing contractors were used to was not the same as that used in a ballasted roof. Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer.

The stones used in ballasted roofing are generally 1 5 2 5 inches in diameter and applied in a thicker layer. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis. No need to anchor and damage the roof membrance. 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.

For built up roofing the gravel was generally 25 5 inches in diameter. The weight of a roofing system varies depending on components used. Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane. Non penetrative mechanical fixing this method is where the mounting system sits completely separate atop the waterproofing via substructures that are held onto the roof through mounting plates and welding or bonding overlying membrane sleeves to the uppermost layer of the waterproof covering.

Holes mean roof leaks and roof leaks mean call the roofer.