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.
How to fix a sagging garage roof ridge.
In many cases you ll need to fix sagging trusses or rafters to repair your roof.
You ll need a steel l channel to get your rafter or truss back into shape.
In some cases roof sagging problems are not caused by framing issues.
If that s what you re dealing with regarding your home take these steps to ensure your rafter or truss gets fixed properly.
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.
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.
How to fix sagging roof trusses or rafters.
Fixing a sagging roof as soon as you spot it is very important otherwise you could find that the problem will only worsen over time and in the end you may need to have the entire roof replaced which could be extremely costly not to mention a lot of hassle.
Not enough structural support for the load.
Solutions can range from simple to downright ugly for your wallet and unless you re comfortable with span tables advanced carpentry and working at heights fixing a sagging roof is almost always time to call a pro.
That s how to fix a sagging roof.
The cause of a sagging roof is straightforward in theory.
Next place your piece of plywood and styrofoam foam side up against the damaged roof decking.
Push up on the plywood until the foam is touching the underside of the roof decking.
Use your string line to determine how much the roof need to go up.
Rotten or saturated sheathing can also cause roof lines to sag.