Gravel Bakkast Roof

Most ballasted roof systems use gravel stone that is similar to what would be used in landscaping.

Gravel bakkast roof.

Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane. Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer. Gravel roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable. However other ballasted systems use pavers which are easier to walk on and can be.

Large mixed color decorative rock. Click here to edit text 2 round blue gravel approx 1 1 2 3 excavated from our pond with a natural blue tint with brown and natural color hues. Magazine and roofing southwest although single ply roofs inherently have sun protective qualities ballast provides an extra layer of protection from uv rays. Ballasted roof systems have been installed since the early 1970 s.

The purpose of stone or gravel ballast on a flat roof. 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. Holes mean roof leaks and roof leaks mean call the roofer. Though primarily confined to built up asphalt roofing systems it can be applied to single ply epdm rubber based membranes as well.

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. It is not unusual to find a gravel top coat on commercial roofing systems. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis. Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed.

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. Unwashed landscaping decorative drainage and roof ballast stone. The stones used in ballasted roofing are generally 1 5 2 5 inches in diameter and applied in a thicker layer. They are known for their installation speed and pleasing aesthetics.

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. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. The single ply membrane and other roof components including thermal insulation are loose laid. These small stones.

When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. For built up roofing the gravel was generally 25 5 inches in diameter. Ballast tar gravel roofing. Published by justin on september 19 2019 september 19 2019.