Roof Decking Material Plywood

Plywood and osb are ideal materials for roof sheathing systems ranging from simple single family residences to large commercial buildings.

Roof decking material plywood.

Roof sheathing or decking is one of those elements. What is roof sheathing. Plywood long ago lost its market leadership to oriented strand board osb which is now the most used sheathing and subflooring material. It adds proven performance and durability to new homes room additions and renovations.

Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof design. Multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof in square feet. Also known as sheating decking is basically where the roofer attaches the shingles or whatever your chosen roofing material is. Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance.

Obviously it should be graded for exterior use meaning it should be able to withstand rain especially during the construction of the roof. Both osb and plywood for the roof have been approved for use so it may come down to what you feel most comfortable using. To find the amount of plywood needed to cover a roof start by finding the area of the roof. And if you re still wondering what roof sheathing is and what materials are typically used read on and satisfy your curiosity.

It determines how long your roof will last and how well it will protect the contents of your home. Find the area of a roof. The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart.

The common grade of plywood for roof sheathing is cdx. Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood. Comes in standard 4 by 8 foot sheets is strong durable and relatively light. Over the years i have seen claims for plywood decking delaminating which can cause squeeks and knocks between the ply s.

Once the area is known divide by the area of a 4 8 sheet to find how much sheathing is needed. It also holds roofing nails well. A roof system consists of several elements working together to protect the home.