River Rock Flate Roof

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.

River rock flate roof.

Butler arts 0 50 cu. 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. To 3 in 30 lb. Ballast stone traps a lot of dirt making patching difficult.

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. Stones or concrete pavers protect the waterproofing layer from uv rays hail and foot traffic. Arizona river rock model arz 40 22 98 22 98. Grey caribbean river pebbles model rfgcrp3 30 26 00 26 00.

Talk to ten roofing contractors and you ll get ten answers on what the gravel is for but this seems to be the consensus. Built up roof bur the traditional hot tar and gravel. And at the end of the roof s. Roofs with pavers as ballast can be used as outdoor patios.

Set your store to see local availability add to cart. Adds a lot of weight to the roof system typically 10 15 pounds per square feet. There are different types and weights of gravel used on flat roofs for these purposes. Gravel is used on flat roofs for two reasons.

Gravel to protect built up. To weigh down or secure the roofing material as is the case with single ply flat roofs. But such a low slope holds snow and water much longer than a steeply pitched roof and therefore needs a very different material to stay watertight. Membrane roofs are attached in a variety of ways.

To protect the underlying layer of roofing materials as is the case with built up roofs burs. Flat roofing is not actually flat. It has a very low slope between 1 4 to 1 2 inch per foot so that it drains water. Epdm and neoprene roof seams are fastened by adhesive and pvc roof seams are heat or solvent welded.

Extremely difficult to find a leak in this system since the membrane is well hidden. The loose laid layers in a ballasted roofing system are easily taken up making for easy repair. Tar has a low melting point. Drawbacks of a ballasted roof system.