Flat Roof Plywood

In this case you can t use a 3 8 inch thick sheet.

Flat roof plywood.

1 2 or 3 4 inch plywood for roof sheathing. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. Yes there are several different material options and types of roof plywood. 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.

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. 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. Especially in relation to osb or plywood use for roofs walls floors. For this you can either go for a half inch or 5 8 inch.

The minimum plywood for roofing. Traditionally 1 2 in cdx plywood was common choice with 24 in rafter spacing. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. Rafters run from the peak of the roof.

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. More product details close. However heavier roof loads may require the use of 3 4 in cdx plywood for roof sheathing. This minimum wouldn t work if you have a flat roof.

Different material options types of roof plywood. Roofs with less pitch often carry heavier loads including snow and ice accumulations in the winter. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. Plywood on the other hand is made with thin sheets of wood that have been cut from a spinning log then glued together.

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.