Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis.
Non ballasted roof.
Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane.
The stones used in ballasted roofing are generally 1 5 2 5 inches in diameter and applied in a thicker layer.
What is the average unit weight of non ballasted epdm roofing systems.
The system is delivered in compact form to save logistics cost unfold at site saves valuable time.
Section 1609 is title wind loads and contains the wind design speed maps and other pertinent roof wind uplift resistance requirements.
Holes mean roof leaks and roof leaks mean call the roofer.
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.
Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer.
The weight of a roofing system varies depending on components used.
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.
After combining the weight of components i e.
Corigy solar non penetrating ballast solar racking is designed for solar mounting on commercial or residential flat roof.
This section regarding wind resistance of non ballasted roofs has been refined in the 2009 code which includes the word components and narrows requirements to be in accordance with section 1609.