After that use a piece of lumbar strapping to keep the plywood in place until you can get a roofing repair expert to fix it.
Sagging roof deck cosmetic only.
No matter what the reason when you see a house with a sagging roof it tends to make you nervous even if you don t know precisely why.
Next you will need to brace the deck against future sagging.
Sagging rafters can lead to serious problems with the entire roofing system.
Being nervous about a sagging roof is understandable.
Most people without any construction experience know that a roof should be flat and not wavy or sagging.
How to appraise a roof condition.
You can use blocks of wood placed under your joist braces or you can use cinder blocks bricks river rocks.
Soaked or waterlogged decking can warp which can lead to a bowed or wavy roofline and ceiling.
If your roof is more than 30 years old rebuilding it will be the most effective approach to dealing with sagging.
Push up on the plywood until the foam is touching the underside of the roof decking.
During a roof appraisal both parts are inspected for.
Understand that sagging in a roof when not a structural problem is always going to be either the sheathing or rafters.
Ways to brace the deck.
The longer you go without.
To replace your rafters and sheathing whether osb or plywood see above.
Problems with the roof itself aren t the only reason a roof might sag.
When it comes to rot roof deck repair isn t an option it must be fully replaced.
On average a roof lasts between 15 to 30 years depending on the design the materials used and your climate.
While in class roof framing was considered the most difficult part and there are crews that just frame in roofs out there exclusively.
That s how to fix a sagging roof.
Fixing a saging roof deck as a 2nd generation roofer who s doing his darndest to transition into a framer i think that every roofer should take a framing class.
If you notice that there is a visible dip in your roof chances are you have a problem with one or several rafters and you may soon be facing more issues like water leaks bowed out walls or your roof caving in on you.
A sagging ceiling or roofline is another clue that there are major problems with a roof s decking and the roofing structure.
Repairing other types of shed roof.
Simply adding a different or extra a layer of roofing material will only make the sagging worse avoid.
Just something that might need to be reviewed.
All roofs contain of two parts the sheathing deck and the protective roofing surface that covers it.