Unless the roof is leaking the line you see on the roof is an aesthetic problem but the cupped plywood is putting an added strain on the shingles either side of the visible line.
Found leak roof wet decking.
Use a putty knife to spread the tar into the leaking hole on the inside of your roof.
Examine your roof deck take a look at the deck.
Once you ve found the leak you can make a temporary leak patch from some plywood or shingle and some roofing tar.
Clear all furniture and debris so you can have a clear view of every.
This kind of structural damage could compromise the integrity of the structural members and require repair or replacement to these important components.
Wear a hat while on the roof to protect your head from sunburn or heat exposure.
A quick inspection of the attic might uncover dark water stains on the rafters or in the insulation or even light passing through holes in the roof.
The vaporized water expands creating pressure within the roof system.
Leaking roof deck.
Make a temporary leak patch.
One of the most common signs that a roof s decking is damaged is a roof leak.
As water heats within the wet insulation it begins to turn to water vapor.
Identify the source of the leak if water is leaking into your home through the ceiling your rooftop deck may or may.
Water leakage can lead to ceiling spots or leaks stains on interior walls cracked paint or peeling wallpaper.
Same goes for the trusses and framing of the home.
If the system is open to the interior of the building the vapor will push into the building envelope and condensate showing up as a roof leak.
Apply caulk or roof cement to any flashing that might be letting water.
Add roof cement or caulk to any exposed flashing.