Roof Ballast Rocks

It is however ballasted generally with gravel.

Roof ballast rocks.

Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane. The difficulty with a ballasted roof is the issue of water pooling. Landscaping decorative drainage septic systems roof ballast. Products may run larger than description.

Despite the positive qualities associated with a ballasted roof system there are some challenges. Naturally round grey and tan granite. Holes mean roof leaks and roof leaks mean call the roofer. Personally i dislike them.

Please visit us to view actual products before placing an order. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis. 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. March 11th 2010 at 2 41 pm.

Roofing ballast is usually the little pebbles you see on a flat ish roof. The ballast also helps protect the roofing membrane from damage such as from hail tree branches and ultraviolet light. Ballasted flat roofs are a popular choice especially for commercial buildings. 2 roofing ballast no longer meets spec astm d 448.

4 blue round gravel approx. Admittedly one that i have not seen but i haven t been in the desert since i was a kid. This appears to be a form of roof ballast. Used in roofing applications.

Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer. Additional benefits of ballast on a flat roof. Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed. 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 single ply membrane and other roof components including thermal insulation are loose laid. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. 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.

Too much gravel can result in a structural issue due to weight. 3 4 1 1 2 excavated from our pond with a natural blue tint mixed with brown and natural color hues. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. 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.