Boards do so regularly.
Warped plywood on roof.
Like the underside of a shriveling leaf the plywood s concave side has lost moisture and shrunk.
Damaged decking can be potentially dangerous.
Step 2 set the plywood sheet on a flat surface that has adequate exposure to warm air such as a paved driveway on a warm sunny day.
As moisture is absorbed into the wood or leaves it it often causes the boards to warp.
The decking is the plywood that covers your entire roof and is the foundation for your shingles.
Underlayment not lying flat.
When it comes to choosing what kind of plywood you need for the roof it is important to understand the basic categories that you can choose from.
The plywood might also become warped itself if it becomes wet which could happen in the case of a roof leak.
Any problem with the decking can result in a visible wave on the roof.
Even new plywood can warp if not stored properly or if left in the sun.
The plywood is nailed to the roof rafters and unless the builder used a tongue and groove plywood or h clips the long edge can warp in between each rafter.
What kind of plywood for the roof.
Plywood sheathing not butting up nicely all around but warpage here and there is pretty easy to see how the home inspector caught the mold but didn t see the warped sheathing is a head scratcher pretty clear this didn t happen in the last 18 months.
Plywood isn t the only wood which can become warped.
The convex or humped side should face up and the side you sprayed.
Reversing the warp can be accomplished by adding moisture to.
Spray hot water generously onto the concave area of the warped plywood.
Cdx plywood is a construction grade type of plywood that is designed for.
It could be an indication of water leaking through the shingles or a.
Before you give up in frustration though try a little moisture therapy.
Investigating a warped and wavy roof.
Most construction sites will consider the use of either osb or plywood for the roof.
