Roof Sheathing Type

Required sheathing thickness for roofing important factors.

Roof sheathing type.

It is attached to the exterior wall framing and prevents walls from swaying or bending. Sheathing type typically 15 32 inch or thicker panels are required in high wind areas. Plywood is a bit more expensive than osb but is usually stronger. Wood structural panels when designed to be permanently exposed in outdoor applications shall be of an exterior exposure durability.

There are two main types of wall sheathing. This type of roof sheathing is used under wood shingles and shakes which usually require ventilation on both sides of the roofing material. Planks wood boards plywood osb oriented strand board decks. While structural sheathing increases building stability non structural sheathing improves insulation.

Osb is lightweight cheap and strong enough to resist bending or breaking should someone be walking on the roof. Roof sheathing materials plywood. Comes in standard 4 by 8 foot sheets is strong durable and relatively light. Oriented strand board osb.

Roof sheathing may also be constructed of plywood. Zip system sheathing and tape provides a water resistant durable underlayment for many finished roof coverings including metal tile and asphalt shingles fiberglass shingles and cedar shingles. Roof sheathing is commonly made from materials such as. It also holds roofing nails.

They must be covered with some type of sheathing or decking before most finishing roof materials can be applied. The most common materials for this are oriented strand board osb or plywood both. Use panels rated as exposure 1 or better. Zip system panels install fast and stay flat for a roof that looks as good as it performs.

Wood structural panel roof sheathing exposed to the underside shall be permitted to be of interior type bonded with exterior glue identified as exposure 1. Wall sheathing is primarily a structural material. Oriented strand board osb or plywood can be used although plywood will provide higher nail head pull through resistance. Several factors must be considered when determining appropriate roof sheathing thickness such as the.

Open sheathing may also be chosen for economic reasons but only if used with roofing systems such as metal or tile which have the structural capacity to span between sheathing boards.