Half inch drywall can sag if it s hung under roof trusses that are spaced every 24 in.
Fix sagging roof rafters.
If your rafters are still sagging a bit and it is causing your roof to dish out a little in the center of the roof sides add a 2x4 that goes all the way across the rafters in the center of the length of the rafters.
Seeking professional help some problems relating to a sagging roof line should definitely be evaluated by a professional in the roofing industry.
When considering what to do about sags in a roof start by noticing if the sag is in sheathing between rafters page top photo0 or sagging along the length of the rafters.
How to fix sagging roof trusses or rafters.
Roof rafter decking sagging.
Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging.
In many cases you ll need to fix sagging trusses or rafters to repair your roof.
This can cause roof caving water leakage.
If you find your roof is sagging or a slight dip is visible then you are probably a victim of sagging roof rafters.
Fixing a truss or rafter.
This article describes a diy repair project using a site built spreader to straighten sagged roof rafters and decking.
Use your string line to determine how much the roof need to go up.
Drywall instead of 5 8 in.
If your ceiling drywall is sagging between joists sometimes called pillowing it s probably on the top floor and attached to the roof trusses.
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.
Sagging rafters can lead to serious problems with the entire roofing system.
Sagging rafters may be the result of numerous heavy snowfalls or inadequate ceiling joists.
Realignment of the rafters may solve the sagging problem.
Also inspect the metal or plywood gusset plates used where your wood meets on a truss look for damage that includes cracks rot breaks and any other impairment.
When rain water comes through your roof s shingles the plywood will wrap rot or weaken and this will make the roof look like it is sagging between its rafters.
You ll need a steel l channel to get your rafter or truss back into shape.
If so i bet the installers used 1 2 in.
One of the most common causes of roof issues are problems related to the rafters or trusses.
Sagging rafters can be a serious and deadly in some cases problem in your roofing system.
Ceiling joists are placed at the ends of the rafters to keep the rafters from spreading out and sagging.
Rafters support the weight of the roof and any rain or snow that falls on it.
Therefore giving them a good look is critical when addressing sagging bowed or wavy roofs.
