Remove all of the shingles using a pry bar or a shingle ripper tool to detach the nails.
Rotted plywood on roof.
Rotted plywood can cause a number of issues.
If there is rotten decking the shingles are most likely letting moisture in.
Some sections don t even need replacement.
In this video we will demonstrate how to roof repair bad plywood decking caused from a roof leak.
Leave the next course of shingles intact by carefully removing the second set of four nails.
Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh 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.
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.
Simply cut out rotted sections along the roofs trusses and replace them with new plywood.
Most roof decking is made from plywood or a plywood composite known as oriented strand board osb.
Remove tiles and slate.
Osb is composed of intertwining wood strands bonded together by a waterproof resin and is a popular option due to its low price point.
How to replace rotted roof plywood sheathing step 1.
Using a nail puller and power screwdriver remove the roofing nails and screws holding the decking board.
What are different types of roof decking.
Pull the shingles and underlying felt off the entire board not just the area that s rotted.
Working your way up the roof expose all of the rotted wood.
The problem obviously is that you can only perform this once the old shingles are off.
Remove the rotten wood.
During a reroof start at the peak of the roof and remove all shingles prying them up with a pitchfork working your way down the roof.
We take you step by step minute per minute to make it as ea.
Climb up and walk carefully onto the roof.