Rehabilitate Rotten Roof Plywood

Look up at the roof area.

Rehabilitate rotten roof plywood.

Rotted plywood can cause a number of issues. When replacing roof decking you first need to get rid of the old rotten section. Note bad areas for removal. Rotted plywood is identifiable by sinking areas of the roof or visible leaks.

Water is your roof s number one enemy. 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. Osb is composed of intertwining wood strands bonded together by a waterproof resin and is a popular option due to its low price point. And this does not include any interior damages.

Locate the rotted roof decking. Plywood while a bit more expensive than osb is much denser and provides greater protection against moisture. Although the plywood typically lasts longer than most shingles and roof coverings leaks can cause them to rot. All roofs have a layer of plywood sheathing underneath them which provides a base for the shingle attachment.

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. Gain access to the attic to inspect the plywood or roof decking. 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. If there is rotten decking the shingles are most.

Cut away the damaged area. Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood.