Metal Roof On Plywood Or Osb

The only reason to put osb on a roof would be in the case of a very narrow very long very tall building with high wind loads ones which would exceed the wind shear carrying capacity of the steel.

Metal roof on plywood or osb.

An affordable option and easier to lay than shingles tin is the most commonly used type of metal roofing. This is why plywood is considered as the better option for roofing. Each material has its similarities and differences. Osb is made of small and fairly rectangular shaped wood chips from small resinous trees which are bonded into a panel form with wax and synthetic resin.

Modern metal roofs are expected to last 30 years or longer. While metal roofing doesn t require plywood underlayment there are circumstances in which you may wish to install plywood to anticipate future roofing needs or to offer additional soundproofing. Metal roofing roofing answers roofing installation roofing materials. Mike the pole barn guru.

April 3 2017 filed under. When the roofing material dries quicker it can be used to make sure that the roof will stay firm for a longer time. Plywood on the other hand is made with thin sheets of wood that have been cut from a spinning log then glued together with the grain laid out in alternating directions to maximise strength. 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.

Metal roofing requires a solid substrate. In the process of constructing a roof there are typically two different roof decking materials. Osb vs plywood screw holding. Even though the wood is porous it is more natural and it can dry quickly.

Here are some things to consider when choosing your decking material to install on a roof. Then the top of all your purlins once osb under metal roof panels is placed will be in the same plane and the roof steel will lay flat. Overall plywood is a little bit better for roofing. In order to avoid a hump at the transition from two layers of materials to one the notation on the building plans advises to lower the roof purlins in these areas by 7 16.

Osb is widely used as roof decking material. Let s take a look at the most common types of metal roofs for houses. Rotted sagging areas in your roof s plywood decking should be replaced prior to installing metal panels in order to prevent costly repairs in the future. Whether you are looking to install a metal roof on a shed or a house it s important to know the difference in the various types of metal roofs available.