Rehabilitate Rotten Roof Plywood

Whether you are replacing your entire roof or repairing a small area fixing rotten sections of roof decking or sheathing is vital to creating a sound watertight structure.

Rehabilitate rotten roof plywood.

Although the plywood typically lasts longer than most shingles and roof coverings leaks can cause them to rot. I am using a 7 16 osb sheathing that i got from lowe s. Rotted plywood is identifiable by sinking areas of the roof or visible leaks. 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.

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. I m going a reroof in two weeks time where we are removing all the old roof covering and the old sheathing delaminated and rotted 3 8 plywood and replacing it with new 5 8 t g plywood. Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood. The problem obviously is that you can only perform this once the old shingles are off.

Rotted plywood can cause a number of issues. And this does not include any interior damages. Fortunately repairing rotten or weathered eaves is a relatively simple project that you can do yourself without ever having to climb onto your roof. In this video i show how to replace rotten plywood on your roof without breaking your back.

All roofs have a layer of plywood sheathing underneath them which provides a base for the shingle attachment. Locate the rotted roof decking. Think about it before you spend your money. Note bad areas for removal.

Look up at the roof area. Some sections don t even need replacement. Gain access to the attic to inspect the plywood or roof decking. Old and worn out roofing shingles overflowing roof gutters or spouts torn flashing around chimneys ice dams or snow accumulation during the winter season excessive humidity and rising heat in the attic and inadequate roof ventilation can all allow water and moisture to slowly make its way into your roofing system and lead to rotted roof decking.

If there is rotten decking the shingles are most. Simply cut out rotted sections along the roofs trusses and replace them with new plywood.