More Picture Of Why Is My Garage Roof Sagging Best Resolution Image. Weight-related sagging can also be caused by design flaws that leave the roof unable to support its own weight. Jan 16 2019 Cracked rafters and trusses can cause sagging.
Jan 16 2019 Cracked rafters and trusses can cause sagging. Check the ceiling for sagging by attaching a string on one end of the beam and run it along the bottom edge of the beam. Dec 21 2017 Sagging or low spots in a flat roof may be due to undersized or weakened roof joists or problems with the buildup layers beneath the exposed roofing.
Jan 16 2019 Cracked rafters and trusses can cause sagging.
Reason 1 Weak Roofing Material. If you go to the trouble to jack up the ridge make sure your ceiling joist is properly connected to the rafter and wall else your ridge will settle back down as soon as you release the jack. In this case you need to pull off the fascia all around and let the roof edge drop to an acceptable hgt. The first step is to the basement first.