What Ply To Use On A Flat Roof

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.

What ply to use on a flat roof.

The industry offers a thickness of anywhere from 5 16 inch to inch. 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. You can use our flat roof calculator to quickly and accurately estimate the cost of replacement. 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.

Epdm is 1 50 per sq foot making it the cheapest single ply membrane. In addition to the thickness you also need to make sure that you choose plywood that s graded for outdoor use. Single ply roofing has become an increasingly popular flat roof covering over the last few years. Known technically as elastomeric or plastomeric roof membrane depending on the material single ply roofs come in a few different varieties including.

Pvc is 1 90 per sq foot. Why is plywood used in roofing. The membrane roof is the latest roofing technology and is also the roof of choice in commercial construction. Membrane roofing is often used on commercial flat roofs.

Pros and cons for flat roof materials. What plywood should you use for a roof. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. 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.

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. The minimum plywood for roofing. Rafters run from the peak of the roof. 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. Tpo is 1 70 per sq foot. We also cover spray applied foam and liquid roofing options. 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.

Look for something that s graded as exposure 1 or exterior.