Locate nails that hold shingles.
How to repair rotted roof plywood.
How to fix rotted roof decking 1.
Sand the edge of the cut until the edge tapers onto the surface of the underlying laminate.
How to fix rotten wood on a roof.
Detach the nails that.
Cut off blistered or peeled laminates from the main board using the router.
If the plywood is in fact what s rotted it s really so easy to replace that that it s not worth patching it.
Replace the roof decking.
Look up at the roof.
Cut off the blister or peel it completely back until the damaged laminate is flush with the main board.
Locate the rotted roof decking.
That s not going to get a lot of movement.
Gain access to the attic to inspect the plywood or roof decking.
Remove all of the shingles using a pry bar or a shingle ripper tool to detach the nails.
Remove the rotten wood.
But plywood ends to be pretty flexible and this is better used on something like a rotted windowsill.
Remove the shingles over the area of the rotted roof decking identified previously.
How to replace rotted roof plywood sheathing.
Replace underlayment and shingles.
Climb up and walk carefully onto the roof.
Locate dry rot roof damage.