Rock Ballasted Roof

Ballasted roof systems hold dirt and dust in between the stone which makes finding small punctures very difficult.

Rock ballasted roof.

Roofer is shoveling stone out of the way. 2 3 protected membrane ballasted roof system a protected membrane ballasted roof system consists of a roof deck with or without insulation over which the membrane is installed. Some commercial single ply roofs are ballasted with gravel this report does not apply to these. Ballasted roof systems have been installed since the early 1970 s.

Though ballast roofing systems look very similar to built up roofing systems or bur s there are certain differences. Conventional gravel ballasted roofs have been built for many years and are suitable on most flat roofs and structures. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. They look aesthetically appealing and installation is fast and easy.

That means somebody mr. When the concept first came to the u s plenty of roofers scratched their heads and wondered how the roof stayed on without being anchored especially during high winds or storms. In gravel ballasted roofing systems the waterproofing membrane is covered and ballasted against wind uplift and other exposures with a layer of gravel. Plus the only way you re able to see the membrane is to move the ballast.

Pea gravel crushed rock and decorative rock white quartz are often dispersed into a flood coat of hot asphalt and applied over the top of the roof membrane. It can be applied on any building that can accommodate the extra load of the ballast and where the roof slope does not exceed 10. Most ballasted roof systems use gravel stone that is similar to what would be used in landscaping. 2 2 conventional ballasted roof system a conventional ballasted roof system consists of membrane or membrane and substrate material insulation slip sheet etc loose laid over a deck using ballastto hold the system in place.

It is however ballasted generally with gravel. The firestone epdm ballasted system is an economical epdm roofing system suitable for a wide variety of buildings. Even though the asphalt waterproofs the roof highly important for flat roofs the gravel provides an important life extending extra layer. Ballasted roof systems are not really a new concept.

They are known for their installation speed and pleasing aesthetics. They were installed on roofs even in the early 1970 s. However other ballasted systems use pavers which are easier to walk on and can be color coordinated. The weatherproofing layer of gravel gives the roof s surface a longer life and helps prevent cracking blistering and degradation which could lead to leaks or other material failures over time.

Everguard tpo ballasted roof systems the selection of membrane type thickness and attachment is the responsibility of the architect engineer owner or roof consultant. This all takes time and costs the building owner more money.