Gravel Bakkast Roof

The single ply membrane and other roof components including thermal insulation are loose laid.

Gravel bakkast roof.

Gravel roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable. They are known for their installation speed and pleasing aesthetics. 2 1 2 8 unwashed rock. 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.

Unwashed landscaping decorative drainage and roof ballast stone. Ballasted roof systems have been installed since the early 1970 s. Though primarily confined to built up asphalt roofing systems it can be applied to single ply epdm rubber based membranes as well. Gravel roof advantages most gravel roofs are inexpensive to build offer some protection to vulnerable asphalt against uv damage and the stones are very durable.

It is not unusual to find a gravel top coat on commercial roofing systems. The purpose of stone or gravel ballast on a flat roof. Large mixed color decorative rock. A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof.

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. Medium mixed color decorative rock. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. Ballast tar gravel roofing.

Magazine and roofing southwest although single ply roofs inherently have sun protective qualities ballast provides an extra layer of protection from uv rays. Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed. Published by justin on september 19 2019 september 19 2019. However other ballasted systems use pavers which are easier to walk on and can be.

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. Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer. For built up roofing the gravel was generally 25 5 inches in diameter. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis.

Holes mean roof leaks and roof leaks mean call the roofer. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. These small stones. The stones used in ballasted roofing are generally 1 5 2 5 inches in diameter and applied in a thicker layer.