Sagging Roof Support

I can fit a floor jack in there and raise up the saggin.
Sagging roof support. Use your string line to determine how much the roof need to go up. Two or more roofs on one structure spell trouble. 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. 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.
I was wondering if anyone had any advise on bracing the areas that are sagging. Since roofs are designed to be straight a curved or sagging roof means that its structural integrity is insufficient and it may be a warning sign that your roof is headed for collapse. Not enough structural support for the load. It has rubber roofing due to pitch.
Fixing a sagging roof by bolstering the beams. You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof. When the roof framing is assembled two ceiling rafters are often joined together to create a longer span. 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.
Sagging roof lines can originate with the horizontal ceiling rafters. Sagging rafters can lead to serious problems with the entire roofing system. The ceiling joists are sagging near the vent stack. This is called undercutting.
See above roof photo. Non foundational reasons for a sagging roof. Likewise a flood resulting from a broken water line or natural occurrences can compromise your roof eventually. This may be problematic in winter months but allowing the roof to continue to sag can lead to greater problems such as a cave in.
If the sagging roof is due to rotting or warping roof decking the repair will be much easier. The result is pooling water causing erosion of the soil meant to support the foundation. 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.