Thickness Of Roof Sheathing

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood.

Thickness of roof sheathing.

Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. Roof sheathing materials plywood. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Loads will vary with the.

That s considered to be the minimum. Some departments do not have the man power to do roof sheathing inspection inspectors can not see everything and assume that the builder knows enough to do some things right. Required sheathing thickness for roofing important factors. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.

Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof. It also holds roofing nails well. The common grade of plywood for roof sheathing is cdx. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

Allowable spans for lumber floor and roof sheathing a b for si. Several factors must be considered when determining appropriate roof sheathing thickness such as the. Comes in standard 4 by 8 foot sheets is strong durable and relatively light. 1 inch 25 4 mm.

Depends on the roof load see table r503 2 1 1 1 7 construction exceeding the minimum requirements6 osb or plywood is the minimum you can use without edge support. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. If you re in search of quotes for a roof sheathing job improvenet can put you in touch with up to four local contractors for free.

And if you re still wondering what roof sheathing is and what materials are typically used read on and satisfy your curiosity.