What size plywood do roofers use?

5/8-inch
Most Common Thickness The most common rafter spacing is 24 inches, and 5/8-inch plywood is recommended for that. It will support roof loads for most situations and is the standard for most roof applications. Roofs with very heavy loads may require 3/4-inch thickness.

What width of plywood is used for flooring?

The recommended thickness of the plywood subfloor is governed by the spacing of the joists. Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but slightly thicker 3/4-inch plywood should be used for joists spaced further apart.

What is the most common plywood size?

The most common plywood sizes are 4- x 8-feet sheets and 5- x 5-feet sheets.
We also carry pre-cut project panels that are available in different sizes that may vary by store.
The most common thickness of plywood is 1/2-inch, but plywood thickness can range from 1/8-inch to 3/4-inches.

What kind of plywood do roofers use?

CDX is the grade of plywood most commonly used for roofing (CDX plywood means it is Construction Grade for exterior purposes). The wood is graded on each side from A to D, depending on the level of imperfections, (A being free of all imperfections and knots and D being un-sanded and considerably defected).

How much does a 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.

What is better for a roof OSB or plywood?

Plywood Holds the Moisture Advantage Over OSB When plywood gets wet, it tends to swell. 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.

What are the different sizes of plywood sheets?

Common Plywood Sheet Sizes. Hardwood Plywood comes in many lengths and widths, but the two most common sizes are 4 x 8 and 5 x 5 feet. Standard sheets are 1/2 inch thick, while non-standard thicknesses range from 1/8 inch to 3/4 inches.

What’s the minimum thickness of plywood for a roof?

Roof Sheathing Thickness. Unlike with plywood siding, the plywood sheet to be used for sheathing should be at least 3/8 inch thick. That’s considered to be the minimum. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn’t have too much load.

How big is a piece of softwood plywood?

Softwood plywood typically used for rough framing comes in 4 x 8 feet (1220 x 2438 millimeters) sheets. Even though with all variation often 3/4” (19 mm) nominal (23/32”) thickness tongue and groove flooring boards will be allowed to use as a rough subfloor according to building codes. In some application 5/8” will be still acceptable.

How big of a piece of plywood can I use as a subfloor?

Even though with all variation often 3/4” (19 mm) nominal (23/32”) thickness tongue and groove flooring boards will be allowed to use as a rough subfloor according to building codes. In some application 5/8” will be still acceptable.