If your roof is more than 30 years old rebuilding it will be the most effective approach to dealing with sagging.
Fix sagging roof ridge.
In many cases you ll need to fix sagging trusses or rafters to repair your roof.
Sagging rafters can lead to serious problems with the entire roofing system.
If that s what you re dealing with regarding your home take these steps to ensure your rafter or truss gets fixed properly.
If you have just stepped outside your house and realized that your roof is no longer straight this could signal a problem.
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.
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.
Problems with the roof itself aren t the only reason a roof might sag.
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.
On average a roof lasts between 15 to 30 years depending on the design the materials used and your climate.
The ridge board provides a stable nailing surface and adds some lateral stability whereas a ridge beam is a structural support member that eliminates the need for a connection between the end walls to avoid spread.
Use your string line to determine how much the roof need to go up.
You ll need a steel l channel to get your rafter or truss back into shape.
That s how to fix a sagging roof.
A ridge board or ridge beam at the peak of the roof is also an important component.