Hold it against the inside of the plywood by pulling up through the hole while driving deck screws through the roof and into the brace.
Repair hole in roof sheathing.
If there is a small area and few shingles being repaired it will likely be on the low end or as little as 150.
Patch the wood with plywood of the same thickness.
Once you repair the hole in the roof plywood you need to seal up the seams and recover the roof.
Begin by removing the shingles down to the wood sheathing and slip a strip of adhesive ice and water barrier available where roofing repair products are sold under the soffit main roof joint.
Depending on how the roofs join you may have to cut a slot to work it in far enough.
Cover the seams between the old and new decking with bitumen tape.
Caulk the sides of the sheet metal patch and press the shingles down over the sheet metal.
Ez plug can also be used to repair rotten wood or other miscellaneous holes in the roof provided the hole is no greater than 8 x 8 inches.
It may take a couple of holes to find the edge.
If a section of sheathing is rotted or otherwise damaged cut out an area that spans from stud to stud.
No more large holes waiting for plywood to be cut and installed.
Staple it to the roof decking or nail it with plastic capped roofing nails.
In most cases the ez plug fits in the hole with very little or no cutting.
This is a permanent solution for.
Install a 2 by 4 brace under a small hole that extends three times the width of the opening.
Typically a job is to repair leaks.
Lay felt paper onto the roof overlapping the existing paper to get good coverage.
Seal the leak replace shingles seal the shingles.
Ez plug makes it much safer for workers on the roof.