Roof Ballast Rocks

Too much gravel can result in a structural issue due to weight.

Roof ballast rocks.

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. The ballast also helps protect the roofing membrane from damage such as from hail tree branches and ultraviolet light. 3 4 1 1 2 excavated from our pond with a natural blue tint mixed with brown and natural color hues. Naturally round grey and tan granite.

The single ply membrane and other roof components including thermal insulation are loose laid. Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane. 4 blue round gravel approx. You can still find houses here in the city with rock roofs.

A ballasted roof is a roof with something such as rocks or concrete pavers to hold the roofing membrane such as epdm down. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. Personally i dislike them. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2.

Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed. This appears to be a form of roof ballast. March 11th 2010 at 2 41 pm. Holes mean roof leaks and roof leaks mean call the roofer.

Ton or 60lbs bags 3 roofing ballast astm d 448. Roofing ballast is usually the little pebbles you see on a flat ish roof. Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer. Landscaping decorative drainage septic systems roof ballast.

Despite the positive qualities associated with a ballasted roof system there are some challenges. 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. Products may run larger than description. 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.

It is however ballasted generally with gravel. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis. Additional benefits of ballast on a flat roof. Admittedly one that i have not seen but i haven t been in the desert since i was a kid.

831 main street bridgewater nj 08807 1 800 82 rocks. Used in roofing applications. Commercial flat roofs often carry an asphalt roofing system incorporating rocks or stones and are defined as a ballasted roof. The difficulty with a ballasted roof is the issue of water pooling.