Roof Ballast Rocks

Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed.

Roof ballast rocks.

Roofing ballast is usually the little pebbles you see on a flat ish roof. The difficulty with a ballasted roof is the issue of water pooling. 4 blue round gravel approx. The single ply membrane and other roof components including thermal insulation are loose laid.

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. 2 roofing ballast no longer meets spec astm d 448. Products may run larger than description. Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane.

Commercial flat roofs often carry an asphalt roofing system incorporating rocks or stones and are defined as a ballasted roof. Ton or 60lbs bags 3 roofing ballast astm d 448. Holes mean roof leaks and roof leaks mean call the roofer. Ballasted flat roofs are a popular choice especially for commercial buildings.

You can still find houses here in the city with rock roofs. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. Additional benefits of ballast on a flat roof. 3 4 1 1 2 excavated from our pond with a natural blue tint mixed with brown and natural color hues.

Admittedly one that i have not seen but i haven t been in the desert since i was a kid. A ballasted roof is a roof with something such as rocks or concrete pavers to hold the roofing membrane such as epdm down. Naturally round grey and tan granite. Personally i dislike them.

March 11th 2010 at 2 41 pm. 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. 831 main street bridgewater nj 08807 1 800 82 rocks. It is however ballasted generally with gravel.

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. Despite the positive qualities associated with a ballasted roof system there are some challenges. Too much gravel can result in a structural issue due to weight.

Used in roofing applications. The ballast also helps protect the roofing membrane from damage such as from hail tree branches and ultraviolet light. This appears to be a form of roof ballast. Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer.