Roof Sags In Middle

Some roofs sag because of decay to the inside beams and sheathing.

Roof sags in middle.

Non foundational reasons for a sagging roof. A sagging roof can come in one of a few classic forms each with its own cause. In a stick frame non truss sloped roof these issues usually cause the roof ridge to sag in the middle giving it a swayback look but can also cause one side of the roof to sag. Installing new rafters directly alongside the weak or damaged ones is often enough to correct this problem.

This is the easiest problem to repair. A ridge that droops in the middle forming that unintentional western design feature likely is due to undersized rafters and or missing or inadequate internal bracing rafter or collar ties. 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. Two or more roofs on one structure spell trouble.

The home may not be designed to support the weight of this extra roofing material and it will sag. If the framing is sound and problems are not found elsewhere but the roof still sags the. Rotten or saturated sheathing can also cause roof lines to sag.