What Ply To Use On A Flat Roof

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.

What ply to use on a flat roof.

Why is plywood used in roofing. Epdm is 1 50 per sq foot making it the cheapest single ply membrane. Tpo is 1 70 per sq foot. Membrane roofing is often used on commercial flat roofs.

Rafters run from the peak of the roof. Look for something that s graded as exposure 1 or exterior. The minimum plywood for roofing. Known technically as elastomeric or plastomeric roof membrane depending on the material single ply roofs come in a few different varieties including.

Roofing can also be improved by using extra insulation and fresh single ply membranes the effects of an extra insulation will be experienced by the cooler temperatures that will be enjoyed in the interior during the summer and the use of the single ply will definitely prolong the life span of the roof. Common flat roof membranes discussed in this article include built up asphalt tar and gravel modified bitumen and single ply membranes like epdm pvc tpo and kee. Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof design. You can use our flat roof calculator to quickly and accurately estimate the cost of replacement.

Single ply roofing has become an increasingly popular flat roof covering over the last few years. We also cover spray applied foam and liquid roofing options. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. 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.

In general materials used on flat roofs cost less than ones used on sloped ones. Pvc is 1 90 per sq foot. Although the roof structure takes the majority of the weight plywood needs to be able to support the rest of the roofing system. In roofing plywood is often selected due to its strength.

Pros and cons for flat roof materials. The industry offers a thickness of anywhere from 5 16 inch to inch. It is formed from multiple layers of wood bonded together with a glue and the grains run in alternate directions through each layer which ensures the board s strength is. Essentially a single ply membrane roof is comprised of flexible sheets of synthetic polymer that can be divided into two main groups thermoplastics and synthetic rubber.

What plywood should you use for a roof.