River Rock Flate Roof

Adds a lot of weight to the roof system typically 10 15 pounds per square feet.

River rock flate roof.

Epdm and neoprene roof seams are fastened by adhesive and pvc roof seams are heat or solvent welded. Roofs with pavers as ballast can be used as outdoor patios. 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. Grey caribbean river pebbles model rfgcrp3 30 26 00 26 00.

To protect the underlying layer of roofing materials as is the case with built up roofs burs. 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. And at the end of the roof s. Drawbacks of a ballasted roof system.

Arizona river rock model arz 40 22 98 22 98. Set your store to see local availability add to cart. Rain forest 1 in. Stones or concrete pavers protect the waterproofing layer from uv rays hail and foot traffic.

Butler arts 0 50 cu. Gravel to protect built up. In a typical tar and gravel roof which by the way is gradually being supplanted by gravelless roof systems you put down a layer of tar paper then tar and finally gravel. Gravel is used on flat roofs for two reasons.

Extremely difficult to find a leak in this system since the membrane is well hidden. 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 weigh down or secure the roofing material as is the case with single ply flat roofs. Built up roof bur the traditional hot tar and gravel.

Flat roofing is not actually flat. Talk to ten roofing contractors and you ll get ten answers on what the gravel is for but this seems to be the consensus. The loose laid layers in a ballasted roofing system are easily taken up making for easy repair. 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 roof tends to flex a little better under the expansion and contraction of heat and cold making it a bit more durable. Tar has a low melting point. Ballast stone traps a lot of dirt making patching difficult. It has a very low slope between 1 4 to 1 2 inch per foot so that it drains water.