What Stones To Use On Flat Roof

Paving stones can also be added to create walkways which adds value to your property.

What stones to use on flat roof. Both factors can extend the life of your flat roof. Don t go thinking that modern houses with flat roofs only look good though as these innovative designs actually have practical properties as well. A built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat roof. I assume you re not talking about rocks meaning boulders but rather the layer of small stones you see not just on gas stations but on many flat roofs.

Ideally the stones are river gravel which has smooth edges and won t cut into the roof when somebody walks around on it. Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system. The felt paper is in turn covered with a flood coat of bitumen asphalt or tar and then gravel to keep the sun s heat uv rays and weather off it and helps protect it from cracking or blistering and degradation. Specifically there are two main reasons to use a ballasted roof system.

However bur roofs use small stones embedded in tar or asphalt in order to serve as protection from sun rays whereas ballasted roofs use large loose unembedded gravel in far greater quantities and weight from 10 to 25 lbs per. Traditionally most flat roofs in the western world make use of tar or asphalt more usually felt paper applied over roof decking to keep a building watertight. While some roofs use flat concrete or stone tiles gravel is an extremely common ballast type due to its low cost and versatility. For a start there are no tricky gable end spaces to try and navigate when opening up the upper levels in flat roof houses plus you can use the roof itself as an outdoor terrace which will be a.

A layer of gravel or small stones is applied on top of the final coating of asphalt to protect the roof from the elements including ultraviolet uv rays and hail. If you have a low pitched or flat roof tar bitumen rolled or rubber roofing material is recommended. Gravel to protect built up roofs. Unfortunately shingles for a flat roof are not advised.

Roof shingles are not sealed in any way and will leak. If shingles are your hearts desire and no other method will do put down a rolled or rubber roofing material first for protection. Stone ballasted roofs are easy to confuse with bur roofs since the latter are also commonly topped with crushed stone or gravel. Ballast is commonly used with roofs made of tar and gravel roof alternatives including ethylene propylene diene monomer epdm polyvinyl chloride pvc and thermoplastic polyolefin tpo single ply flat roofs.