How far down should sheathing go?
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Moreover, how far should sheathing overlap foundation?
Re: Sheathing overlap You don't want the very outside surface of the wall to be flush with the foundation. You want the drip edge to be at least 1/2 inch outside.
One may also ask, how thick should sheathing be? 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.
Beside above, which side of plywood goes out?
For most projects, these types of plywood will work because you can put the higher rated side facing out while the lower rated side is hidden facing in.
Should wall sheathing cover the sill plate?
sheathing does not have to be secured to the sill plate. This same post started on TIJ--I figured I would try here as well. As Brandon Chew (PE) stated on the other site, the sheathing must be secured to the top and bottom wall plates and studs.