Roofing Over Particle Board

Oriented strand board commonly referred to as osb is a type of engineered lumber similar to particle board formed by adding adhesives and then compressing layers of wood strands.

Roofing over particle board.

Particle board is an inexpensive smooth product that can be used for underlayment under carpeting and vinyl flooring. A homeowner recently wrote and asked me the following regarding osb roof decking. Always begin working at the point with the longest peak to eave distance. Take care the first piece is aligned precisely perpendicular square to the edge.

If you want to pay more plywood cost double or more than osb than go with 1 2in plywood. Even small amounts of water can cause particle board to warp buckle and fall apart. If your going over the exsisting spaced deck boards than 7 16 or 1 2 osb is fine. Plywood vs particle board.

Use as underlayment for resilient flooring to provide a suitable and durable installation surface for finished flooring products. Add the metal panels. With wood roofs slats are a must to avoid rotting the wood shakes. After installing over 10 000 new roofs and specializing in re decks i would never again install standard 1 2 cdx plywood over standard 7 16 osb.

By chris deziel oriented strand board isn t plywood nor is it a type of particleboard fiberboard or wafer board and although it is a newcomer to a plywood dominated market its use for exterior. Particle board approved type particle board was installed as roof sheathing. If you have chosen to use a rigid roofing metal wood shakes or shingles tile etc you can use 1 x 4 slats instead. However even in the best of circumstances particle board is very susceptible to moisture damage.

Osb is widely used as roof decking material. Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm. As far as price goes yes on a normal size home. It is assumed here that you will be applying plywood particle board or wafer board sheathing.