Rotted plywood is identifiable by sinking areas of the roof or visible leaks.
How to remove a roof to the sheathing.
All roofs have a layer of plywood sheathing underneath them which provides a base for the shingle attachment.
Code usually calls for it to project at least 2 ft.
Also keep an eye out for loose roof sheathing that needs renailing.
Up the roof past the exterior walls so you may need two rows on homes with wide soffits.
One way to remove the sheathing is to go at the nails with a cat s paw but that takes a lot of time and causes a lot of damage to the sheathing.
Toss the waste material to the side.
Mold remediation contractors use a variety of techniques to address attic mold growth including dry ice blasting hand sanding and encapsulation.
Move the pry bar down the rafter to remove the nails if you can t pull the sheathing up by hand after.
Although the plywood typically lasts longer than most shingles and roof coverings leaks can cause them to rot.
Remove the wood from the roof using the longer pry bar to assist you.
Cut ice and water barrier to about 8 ft.
Most roof decking also called sheathing is plywood or oriented strand board osb.
The first two are effective though often cost prohibitive.
Removing mold growth from roof sheathing.
Step 4 the new roof sheathing.
When sheathing is exposed to moisture frequently there is always a chance it will decay or develop wood rot.
These thin sheets of wood absorb moisture when exposed to it through excess condensation or a roof leak.
Overlap ends at least 6 in.
When removing a damaged section center the cuts over the rafters so you can nail the new sheathing to the rafters.
Use the tape measure to measure the area for the new roof.
Be sure to use new sheathing that s the same thickness as the old.
Lengths remove the backing and adhere the sticky side to the roof sheathing along eave edges.
I am using a 7 16 osb sheathing that i got from lowe s.
Cut out and replace damaged sections as needed.
This job required removing the lowest course of sheathing on the roof.
Pry the edge of the sheathing from the roof rafters while standing on an adjacent sheet.