Roof Sagging Between Rafters

Its not just sagging between rafters.

Roof sagging between rafters.

Sagging rafters can lead to serious problems with the entire roofing system. Picture the vertical finishing edge that connects to the ends of rafters trusses and the area where the gutter attaches to the roof. Roof sheathing sags for the same reason any component of a home that spans between two bearing points sags. Prevent this unfortunate series of events by bracing your rafters to make them sturdy and resistant to snow loads and wind.

Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging. When sagging gets too severe it can lead to roof collapse and once the roof goes the house won t last for long. There are no cracks or anything 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.

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. Because it was structurally inadequate when installed or has deteriorated over time. 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. I took a pic but the sagging it not as noticeable in the pic as it is in person.

The ceiling below the sagging portion is a vaulted ceiling. Fixing a truss or rafter. If so i bet the installers used 1 2 in. Sagging rafters are a sign that a house is in serious trouble.

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. The fix here is to replace the thin sheathing with thicker sturdier sheathing. If your ceiling drywall is sagging between joists sometimes called pillowing it s probably on the top floor and attached to the roof trusses. Half inch drywall can sag if it s hung under roof trusses that are spaced every 24 in.

Sepecifically its sagging towards the lower 1 3 of the roof. There is a section of roof where the rafters appear to be sagging. Here s some examples of how it can happen.