Rotted Plywood On Roof

Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood.

Rotted plywood on roof.

Leave the next course of shingles intact by carefully removing the second set of four nails. The problem obviously is that you can only perform this once the old shingles are off. Rotted plywood can cause a number of issues. Osb is composed of intertwining wood strands bonded together by a waterproof resin and is a popular option due to its low price point.

If there is rotten decking the shingles are most likely letting moisture in. Simply cut out rotted sections along the roofs trusses and replace them with new plywood. Pull the shingles and underlying felt off the entire board not just the area that s rotted. Climb up and walk carefully onto the roof.

And if a home s roof decking is rotting and unable to support the weight of the roof it can cause some very serious structural issues. Some sections don t even need replacement. Most roof decking is made from plywood or a plywood composite known as oriented strand board osb. Using a nail puller and power screwdriver remove the roofing nails and screws holding the decking board.

Prime spots in the attic for wood rot are on the underside of the roof decking in the joints where the wood members connect at the peak of the roof and at the edges of the attic where the rafters. Working your way up the roof expose all of the rotted wood. 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. Remove all of the shingles using a pry bar or a shingle ripper tool to detach the nails.

Fixing rotted plywood is extremely easy when doing a roof replacement. Set up a ladder at an even location on the ground next to the home. In this video we will demonstrate how to roof repair bad plywood decking caused from a roof leak. Remove the rotten wood.

How to replace rotted roof plywood sheathing step 1. We take you step by step minute per minute to make it as ea.