Flat Roof Plywood

For example if the area to be covered in plywood is 800 ft 2 then 25 sheets of plywood will be needed to cover it.

Flat roof plywood.

Plywood on the other hand is made with thin sheets of wood that have been cut from a spinning log then glued together. A 4 8 sheet of plywood is 32 ft 2. Rafters run from the peak of the roof. Browse our range of roof boards below and choose between general purpose hardwood plywood shuttering plywood exterior wise spruce plywood sheets and more.

800 32 25 sheets. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. Divide by the total square footage by the square footage of a sheet of plywood to find the number of sheets required to cover the space. In roofing plywood is often selected due to its strength.

Although the roof structure takes the majority of the weight plywood needs to be able to support the rest of the roofing system. 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. Most roofs are spaced at least 20 inches apart. For this you can either go for a half inch or 5 8 inch.

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. The minimum plywood for roofing. In this case you can t use a 3 8 inch thick sheet. 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.

Why is plywood used in roofing. Home flat roofing plywood sheets. Yes there are several different material options and types of roof plywood. 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.

This minimum wouldn t work if you have a flat roof. Of course you don t need to live in a modern house to deal with a flat roof. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. 30 years on it s working out fine.

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. If the roof dips here and there because of the thin plywood the 1 8 jump may no be so bad in the mix of it all jack jul 26 16 at 4 24 here in snow country 1 2 osb is standard with 7 16 being common for walls. Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood.