Roof Sagging Between Rafters

Half inch drywall can sag if it s hung under roof trusses that are spaced every 24 in.

Roof sagging between rafters.

Its not just sagging between rafters. The ceiling below the sagging portion is a vaulted ceiling. Roof sheathing sags for the same reason any component of a home that spans between two bearing points sags. Because it was structurally inadequate when installed or has deteriorated over time.

Sepecifically its sagging towards the lower 1 3 of the roof. When sagging gets too severe it can lead to roof collapse and once the roof goes the house won t last for long. Sagging rafters are a sign that a house is in serious trouble. There are no cracks or anything in.

Picture the vertical finishing edge that connects to the ends of rafters trusses and the area where the gutter attaches to the roof. Sagging rafters can lead to serious problems with the entire roofing system. I took a pic but the sagging it not as noticeable in the pic as it is in person. If the roof sags between the rafters or trusses the most likely cause is sheathing that s too thin for the area it covers.

Fixing a truss or rafter. The fix here is to replace the thin sheathing with thicker sturdier sheathing. Drywall instead of 5 8 in. Also inspect the metal or plywood gusset plates used where your wood meets on a truss look for damage that includes cracks rot breaks and any other impairment.

The primary function of fascia is to protect by acting as a layer between the edge of the roof and the elements of the outdoors especially water. There is a section of roof where the rafters appear to be sagging. Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging. If so i bet the installers used 1 2 in.

Sagging sheathing between rafters may be due to rot delamination use of fiberboard or other materials that may not perform well over the life of a home or due use of too thin plywood roof decking to start with. If your ceiling drywall is sagging between joists sometimes called pillowing it s probably on the top floor and attached to the roof trusses. Here s some examples of how it can happen.