Rehabilitate Rotten Roof Plywood

Gain access to the attic to inspect the plywood or roof decking.

Rehabilitate rotten roof plywood. Rotted plywood cannot support the weight of a roof the way healthy wood can nor can it safely grip the nails put into the roof and keep them held firm. Osb is composed of intertwining wood strands bonded together by a waterproof resin and is a popular option due to its low price point. So there you go trying to save 1200 2000 on roof replacement by not removing old shingles and not repairing replacing rotted plywood will usually cost at least 4000 6000 more just in few short years. You may need to cut a little extra to expose enough of the trusses and make sure you get rid of all the rotten wood.

When replacing roof decking you first need to get rid of the old rotten section. Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood. Think about it before you spend your money. Water is your roof s number one enemy.

Although the plywood typically lasts longer than most shingles and roof coverings leaks can cause them to rot. Set the depth of your circular saw to the thickness of the roof decking. Rotted plywood can cause a number of issues. What causes roof decking to rot.

Locate the rotted roof decking. All roofs have a layer of plywood sheathing underneath them which provides a base for the shingle attachment. And this does not include any interior damages. Plywood while a bit more expensive than osb is much denser and provides greater protection against moisture.

Note bad areas for removal. Cut away the damaged area.