Sagging Roof Support
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.
Sagging roof support. Two or more roofs on one structure spell trouble. Not enough structural support for the load. The cause of a sagging roof is straightforward in theory. Less common causes of a sagging roof.
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. Bolstering the beams of your roof is another solution to repairing a sagging roof however it is often something that requires assistance from another able bodied person since beams can be extremely heavy. This is called undercutting.
Fixing a sagging roof by bolstering the beams. Use your string line to determine how much the roof need to go up. 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. In cold winter climates snow is the most common cause of excess weight on the roof.
Non foundational reasons for a sagging roof. Likewise a flood resulting from a broken water line or natural occurrences can compromise your roof eventually.