Roof Sagging Between Rafters

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.

Roof sagging between rafters.

Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging. If the roof sags between the rafters or trusses the most likely cause is sheathing that s too thin for the area it covers. I took a pic but the sagging it not as noticeable in the pic as it is in person. There is a section of roof where the rafters appear to be sagging.

Its not just sagging between rafters. There are no cracks or anything in. Sagging rafters are a sign that a house is in serious trouble. If the framing is sound and problems are not found elsewhere but the roof still sags the problem might have originated because of poor installation of the plywood sheathing or shingles.

When sagging gets too severe it can lead to roof collapse and once the roof goes the house won t last for long. The fix here is to replace the thin sheathing with thicker sturdier sheathing. Roof sheathing sags for the same reason any component of a home that spans between two bearing points sags. If so i bet the installers used 1 2 in.

Drywall instead of 5 8 in. Because it was structurally inadequate when installed or has deteriorated over time. Half inch drywall can sag if it s hung under roof trusses that are spaced every 24 in. Picture the vertical finishing edge that connects to the ends of rafters trusses and the area where the gutter attaches to the roof.

Sepecifically its sagging towards the lower 1 3 of the 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. Fixing a truss or rafter. Here s some examples of how it can happen.

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. 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.