Plywood Or Osb For Rv Roof

Osb has its advantages.

Plywood or osb for rv roof.

In our area 1 2 in. I would look for exterior 5 8 plywood as a flooring and exterior 1 2 inch for roof. Personally i would use a layer of 1 2 plywood osb is too fragile and then add the luan. Osb average swell 10 to 15 depending on thickness.

It is generally believed that osb is cheaper than plywood. Talking about plywood or osb for roofing you cannot miss the information of the cost. Many rigs that come with dynaspan and other similar products construct the floor with one seamless piece. Intervals so you know where underlying studs rafters and joists are for nailing.

Because of its construction some manufacturers actually make larger sheets of osb. Apa rated sheathing exposure 1 is particularly well suited for subflooring and wall and roof sheathing. They use this because of how smooth it is which makes the glue stick better. Plywood can delaminate separate when it gets wet.

The last layer on a membrane roof is 1 4 luan paneling. Apa rated sheathing exterior fulfills the same function under high moisture conditions. Like osb many rv manufacturers will not use the highest quality plywood. Some panels have a textured surface which makes them less slippery when used for roof sheathing.

Watch this now to learn how to avoid this same pr. While surveying the damage i determined that the roof is constructed in layers including rubber material plywood and foam. Both cdx plywood and osb tend to come in standard sheets of four foot by eight foot 4 8. Like a diving board.

If your going to have a the sheathing off then i would add good quality insulation too. My rv roof leaks in several places and the roof sagged around the air conditioner. Over a period of time when subjected to high humidity or a series of dramatic wetting events osb is more prone to panel swell than plywood especially at the edges. It is true as the price of every osb board is around 15 20 per sheet 4 8 sizes.

For plywood it is like 5 to 10 more expensive. Osb panels often have lines at 16 and 24 in. The air conditioner mounts to a 2 x 6 piece of plywood that is supported only on one end. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.

Thicknesses range from 5 16 to 3 4 inch and the proper. Plywood and osb structural panels. Osb sheathing costs a few dollars less per sheet than 1 2 in. Several grades of plywood and osb structural panels are recommended for specific rv applications.