Rotted plywood is identifiable by sinking areas of the roof or visible leaks.
Replace plywood and section of roof.
After cleaning the debris and reframing the roof lay down a base sheathing.
Stagger the sheathing in a brick pattern for extra strength.
All roofs have a layer of plywood sheathing underneath them which provides a base for the shingle attachment.
Measure the opening of the section of roof to be shingled cut the plywood to size and nail to roof rafters.
Gain access to the attic to inspect the plywood or roof decking.
If you can see original wood shingles on the underside of your roof when you re up in the attic you ll need not only to tear everything off but also to install new plywood decking all of which likely adds 5 000 or more to your costs.
Both osb and plywood for the roof have been approved for use so it may come down to what you feel most comfortable using.
Eight foot 1 2 inch thick plywood is standard sheathing material.
Damaged shingles and rotted plywood must be removed before replacing them with new plywood and roofing material.
If not climb the roof and measure the opening so you can cut the replacement piece to be a perfect fit.
Look up at the roof area.
Replace the roof decking select plywood or oriented strand board that is the same thickness as the wood you are replacing.
If you were able to keep the removed section in one piece measure it.
Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.
Although the plywood typically lasts longer than most shingles and roof coverings leaks can cause them to rot.
Installing plywood on a roof hello youtubers here s another video about plywood sheathing and composition shingles after replacing all damaged wood and.
In other words you don t want to have 3 8 above the 1 2 because it will create a ridge that water will settle in.
Choosing the right type of plywood for the roof is one of the most important construction decisions that you will have to make.
Rafters run from the peak of the roof.
It determines how long your roof will last and how well it will protect the contents of your home.
Note bad areas for removal.
The minimum plywood for roofing.