Rehabilitate Rotten Roof Plywood

Locate the rotted roof decking.

Rehabilitate rotten roof plywood.

If there is rotten decking the shingles are most. Rotted plywood is identifiable by sinking areas of the roof or visible leaks. Gain access to the attic to inspect the plywood or roof decking. Plywood while a bit more expensive than osb is much denser and provides greater protection against moisture.

Water is your roof s number one enemy. When replacing roof decking you first need to get rid of the old rotten section. 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. Note bad areas for removal.

Osb is composed of intertwining wood strands bonded together by a waterproof resin and is a popular option due to its low price point. Cut away the damaged area. Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood. Although the plywood typically lasts longer than most shingles and roof coverings leaks can cause them to rot.

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. Set the depth of your circular saw to the thickness of the roof decking. Think about it before you spend your money. Look up at the roof area.

What causes roof decking to rot. 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.