FAQ: How Many Sheets Of Plywood Do I Need For My Roof?

How do I calculate how much plywood I need?

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. A 4×8 sheet of plywood is 32 ft2. For example, if the area to be covered in plywood is 800 ft2 then 25 sheets of plywood will be needed to cover it.

How do I figure out how many roofing sheets I need?

Divide the total roof area by the effective area of a single sheet and round up the result to the next whole number. The result is the number of sheets required.

How much does a 4×8 sheet of roofing plywood cost?

Your price could vary depending on how much the roofing company charges for labor, but generally, you can expect to spend between $70 to $100 for each sheet of plywood. A 4 x 8 sheet of plywood covers about 32 square feet of roof area—and the average roof measures about 3,000 square feet.

Which plywood is best for roofing?

CDX is the grade of plywood most commonly used for roofing (CDX plywood means it is Construction Grade for exterior purposes).

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How much does a sheet of plywood cost?

The cost of a sheet of plywood will depend on the size and where it’s purchased. Depending on the thickness, plywood can cost anywhere from $5 to as much as $55 for a 4×8 sheet. For example, a 4×8 that 1/4″ thick can cost $6, while a 4×8 that is 11/32″ thick can cost around $15.

How many roofing sheets are in a bundle?

20 Sheets /Bundle 0.13X665X1800mm Galvanized White Zinc Roofing Sheet.

Should I use OSB or plywood for roof?

OSB takes longer than plywood to get saturated, but also takes much longer to dry out. When used as roof sheathing, this tendency to hold moisture means it will degrade faster than plywood when exposed to chronic leaks.

Does new roof include plywood?

If you are getting a new roof, while you may not necessarily need to have the plywood decking replaced, you should have it carefully inspected by a qualified roofing contractor. When considering a contractor for your project, be sure to address the subject of plywood replacement, and what the cost per plank will be.

Is CDX plywood good for roofing?

Only use CDX plywood for the interior of a house, where water damage is far less likely. Do not use CDX for roofing, sheds, or other places that are exposed to moisture consistently. The sole exception to this is pressure treated CDX, which can survive for decades without even a protective coating.

Can you put 2 layers of plywood on a roof?

The new plywood will have to be nailed to the rafters or roof trusses. That increase in weight should not be a problem with the single layer of asphalt shingles you will be installing, because it is normally safe to assume the roof structure is built to support the weight of two layers of asphalt shingle roofing.

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Can CDX plywood be used for roofing?

CDX Plywood is used primarily by contractors to build exterior walls and roofs. CDX plywood has one side veneer grade “C” and one side veneer grade “D”. The two are bonded together with glue which can withstand a little moisture. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood.

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