What is the size of exterior plywood?
PLYWOOD – EXTERIOR PLYWOOD
| Thickness | Size | Cut |
|---|---|---|
| 1/2″ | 4′ x 8′ | Fir 15/32 |
| 5/8″ | 4′ x 8′ | Fir 19/32 |
| 3/4″ | 4′ x 8′ | Fir 23/32 |
| 1″ | 4′ x 8” | Radiata Pine 31/32 |
Which plywood is for exterior use?
CDX is the most common exterior plywood grade. It comes in 3/4-, 5/8- and 1/2-inch thicknesses. Appearance stamps on plywood range from cabinet-grade (A) to construction grade (C and D). Exterior plywood carries an X stamp, which identifies it as suitable for use outdoors.
What thickness of plywood is used for exterior walls?
The International Residential Code specifies 3/8-inch plywood for sheathing walls with a standard stud spacing of 16 inches, if the siding is nailed to the studs through the sheathing. If the nails penetrate the sheathing, but not the studs, the minimum plywood thickness that the IRC designates is 1/2 inch.
How is exterior grade plywood marked?
Exterior grade plywood, marked with an “X” after the surface grade (CDX plywood means face side is grade C, back side is grade D, and the plywood is intended for exterior use) uses a resin that is more water resistant than interior grade plywood.
Is exterior plywood the same as marine plywood?
It’s a very common mistake to describe exterior plywood as “marine plywood.” DIY and building shows on television seem to call any plywood “marine plywood.” Over the years “marine” has become a generic term to describe plywood that is exterior rated. Standard exterior plywood is bonded using an exterior phenol glue.
What is code for exterior wall sheathing?
1304.13 EXTERIOR WALL SHEATHING. (a) Wooden structural sheathing panels shall be installed on all exterior frame walls.
What size OSB should be on exterior wall?
Exterior walls Minimum thickness of wall sheathing for use on walls; 3/8″ plywood or 5/16″ OSB. If you use fibre cement siding, go with 1/2″ plywood or 7/16″ OSB for the exterior walls.
What size is CDX plywood?
As the most common plywood product available on the market, CDX plywood is available in a number of thicknesses, ranging from 1/4 to 1-1/4 inch thick and also including 3/8, 1/2, 5/8 and 3/4 inch thicknesses, which are the most common sizes.
What is external grade plywood?
Exterior plywood is the general term for weather-proof plywood used primarily for outdoor applications. It is made from several layers of wood veneers bonded together using phenolic resin. The glue hardens to form a crystalline substance, making the plywood more resistant to moisture and humidity.