Flat Roof Plywood

Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for light frame wall and roof assemblies in weather protected applications.

Flat roof plywood.

Rafters run from the peak of the roof. Yes there are several different material options and types of roof plywood. More product details close. Different material options types of roof plywood.

Traditionally 1 2 in cdx plywood was common choice with 24 in rafter spacing. In this case you can t use a 3 8 inch thick sheet. Osb is made of small and fairly rectangular shaped wood chips from small resinous trees which are bonded into a panel form with wax and synthetic resin. 1 2 or 3 4 inch plywood for roof sheathing.

Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. Most roofs are spaced at least 20 inches apart. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. Plywood on the other hand is made with thin sheets of wood that have been cut from a spinning log then glued together.

Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood. Of course you don t need to live in a modern house to deal with a flat roof. For this you can either go for a half inch or 5 8 inch. A roof that lays practically flat will have a much heavier load than a steeper roof that allows rain snow and ice to roll right off.

The minimum plywood for roofing. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. This minimum wouldn t work if you have a flat roof.

Especially in relation to osb or plywood use for roofs walls floors. Roofs with less pitch often carry heavier loads including snow and ice accumulations in the winter.