Gravel Ballast Green Roof

For roofs displaying complex detail areas and geometry even when accessibility is limited.

Gravel ballast green roof.

Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed. For cold roof warm roof and inverted roof build up s. It also provides protection from foot traffic. Despite the positive qualities associated with a ballasted roof system there are some challenges.

Roof gravel provides a protective layer to flat roofs reducing the weather damaging effects from uv rays and heavy snow hail and wind. Ballasted green systems roof materials for ballasted green systems a ballasted gravel paved roof will generally require a stronger supporting structure than that for the exposed membrane one but will allow the roof to be used as a trafficked or leisure use area. Magazine and roofing southwest although single ply roofs inherently have sun protective qualities ballast provides an extra layer of protection from uv rays. The gravel in a ballasted roof helps absorb heat preventing the sun from heating the roof materials below and making the roof more energy efficient.

The single ply membrane and other roof components including thermal insulation are loose laid. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane.

Ballast tar gravel roofing. Our roof gravel is available for delivery in tunnel lift bulk bags allowing an easy method of transporting the gravel onto a roof using a crane not provided. It is very important to note that the amount of gravel being applied to a roof must be precise it depends on the specific roofing spec being used and the building type. Holes mean roof leaks and roof leaks mean call the roofer.

Too much gravel can result in a structural issue due to weight. On the other hand ballast roofing might be the right choice for your commercial property if you live somewhere with a ready source of ballast rocks gravel of the appropriate size and you prefer the aesthetic look and texture of the larger stones. They assume a nominal selection of post codes selected to represent the infl uence of geographical variations in rainfall on thermal performance. They are valid for the constructions shown in the details immediately above each table.