River Rock Flat Roof

Pros and cons for flat roof materials.

River rock flat roof.

There are different types and weights of gravel used on flat roofs for these purposes. It is not unusual to find a gravel top coat on commercial roofing systems. Glenview il there are many different sorts of stone and also rock to choose from depending upon your needs. Membrane roofs are attached in a variety of ways.

All three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof. Pebbles or small rocks spread several inches thick over the outer roof mem. A flat roof will have several layers of a thin membrane made of tar asphalt and or bitumen material. River rock decorative stone for your roof.

Though primarily confined to built up asphalt roofing systems it can be applied to single ply epdm rubber based membranes as well. A layer of pebbles can substantially extend the life of a flat roof. Published by justin on september 19 2019 september 19 2019. Crushed stone gravel and volcanic rock.

Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. Roofing stone is available in 1 1 1 2 roof ballast and 3 8 washed pea stone. Designed to be used on flat rooftops. The epdm membrane can be loose laid and held in place with ballast such as river rock or masonry pavers.

Talk to ten roofing contractors and you ll get ten answers on what the gravel is for but this seems to be the consensus. Gravel to protect built up. To weigh down or secure the roofing material as is the case with single ply flat roofs. They can be partially loose laid and held down with river rock ballast requires roof structure to support the weight or fully adhered to the roof deck.

The membrane can also be fastened or glued to the insulation layer. Gravel is used on flat roofs for two reasons. Ideally the stones are river gravel which has smooth edges and won t cut into the roof when somebody walks around on it. Due to variations in monitor settings we cannot guarantee that the colours displayed on our website will exactly match the colour of the product.

Membrane roofing consists of a layer of insulation board topped by sheets the membrane of epdm rubber or other material.