Damaged shingles and rotted plywood must be removed before replacing them with new plywood and roofing material.
Replace plywood and section of roof.
Note bad areas for removal.
Eight foot 1 2 inch thick plywood is standard sheathing material.
After cleaning the debris and reframing the roof lay down a base sheathing.
Rafters run from the peak of the roof.
Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.
Locate the rotted roof decking.
If you absolutely must use different thickness sheathing replace all of the plywood above the one that needs to be replaced to the ridge of the roof.
The minimum plywood for roofing.
Choosing the right type of plywood for the roof is one of the most important construction decisions that you will have to make.
Measure the opening of the section of roof to be shingled cut the plywood to size and nail to roof rafters.
Stagger the sheathing in a brick pattern for extra strength.
Replace the roof decking select plywood or oriented strand board that is the same thickness as the wood you are replacing.
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.
Look up at the roof area.
It determines how long your roof will last and how well it will protect the contents of your home.
The tear off gets a lot more complicated if you have something other than asphalt up there.
If you were able to keep the removed section in one piece measure it.
If not climb the roof and measure the opening so you can cut the replacement piece to be a perfect fit.
Gain access to the attic to inspect the plywood or roof decking.
All roofs have a layer of plywood sheathing underneath them which provides a base for the shingle attachment.
Both osb and plywood for the roof have been approved for use so it may come down to what you feel most comfortable using.
Installing plywood on a roof hello youtubers here s another video about plywood sheathing and composition shingles after replacing all damaged wood and.