Standard panels are 2 by 8 4 by 8 and 4 by 9 feet although some can be purchased in fan folded panels that run up to 50 feet long.
Exterior wall sheathing thickness.
For covering existing siding 1 2 inch and 3 4 inch thicknesses are commonly used.
So companies like norbord started creating tallwall windstorm panels to help alleviate this.
Exterior wall sheathing is either structural or non structural.
5 8 exterior gypsum sheathing has a type x core for use in fire rated assemblies.
Minimum plywood thickness 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.
Exterior wall sheathing strengthens the wall system provides a nailing base for the siding and gives a layer of protection against outside elements.
But in practice most walls with too thin foam won t fail.
Exterior gypsum sheathing is available in 1 2 5 8 thick 4 wide square edge product.
In theory builders should make sure that any rigid foam installed on the exterior side of wall sheathing is thick enough to keep the sheathing above the dew point during the winter.
Foam board thicknesses range from 3 8 inch to 4 1 4 inches.
Structural exterior wall sheathing ties framing studs together making the walls resistant to twisting and bending.