Wall Sheathing Thickness

Structural exterior wall sheathing ties framing studs together making the walls resistant to twisting and bending. To calculate the number of sheaths needed to cover a wall you need to know the square footage of the wall. Where wood structural panel sheathing is used as the exposed finish on the outside of exterior walls it shall have an exterior exposure durability classification where wood structural panel sheathing is used elsewhere but not as the exposed finish it shall be of a type manufactured with exterior glue exposure 1 or exterior.

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Thickness rating and material standards 1 where wall sheathing is required for the purpose of complying with this section it shall conform to table 9 23 16 2 a.

Wall sheathing thickness. The death of the 8 sheet one of the biggest items when sheathing a wall vertically is that the sheathing has to be continuous 602 10 4 5 which meant that an 8 sheet wouldn t cut it in many places so longer ones were required. The ontario building code thickness rating and material standards 9 23 16 2. If the nails penetrate the sheathing but not the studs the minimum plywood thickness that the irc designates is 1 2 inch. Exterior wall sheathing is either structural or non structural.

Wall sheathing thickness and specifications. Osb thickness for wall sheathing. Although you can use panels as thin as 5 16 inch for some applications it is usually a good idea to spend a little bit more for sturdier 1 2 inch panels. If you have a small opening in your wall then ignore that.

When choosing plywood osb or wafer board panels be sure they are rated as wall sheathing and choose an appropriate thickness. Thickness of exterior wall sheathing. Square footage of a wall divided by the square footage of the sheathing one 4 x 8 sheath 32 sq ft equals the number of sheath s needed. Zip system wall sheathing and tape has been rated 1 in quality every year since 2015 in builder magazine s annual brand use studies.

Blownonfuel posted in construction techniques on august 9 2008 07 22am well it seems i just may go ahead and sheath my walls before i put them up so i need to find out how to go about selecting the thickness of sheathing and whether to use osb or ply. Wood structural panel sheathing connections and framing spacing. The strands are glued. Oriented strand board osb is an engineered wood structural panel created of strands of wood about 1 inch wide and up to 4 feet long.

In practice many builders default to 1 2 inch plywood even if they plan. Exterior wall sheathing strengthens the wall system provides a nailing base for the siding and gives a layer of protection against outside elements. View more benefits view less benefits zip system building enclosures are designed to streamline design and construction. So companies like norbord started creating tallwall windstorm panels to help alleviate this.