Home Roof Sag

Look for any kind of damage including rot cracks breaks and more.

Home roof sag.

This is the easiest problem to repair. Installing new rafters directly alongside the weak or damaged ones is often enough to correct this problem. Cracked rafters and trusses can cause sagging. Some roofs sag because of decay to the inside beams and sheathing.

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. Determining the problem determine where the sag is in your roof in relation to your attic. Also inspect the metal or plywood gusset plates used where your wood meets on a truss. Then inspect the metal or plywood gusset plates.

Go outside of the house and determine where the sag on the roof would be in your attic. The home may not be designed to support the weight of this extra roofing material and it will sag. Rotten or saturated sheathing can also cause roof lines to sag. Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging.

Decay can occur over time due to a number of reasons including leaks in the roof or leaks from guttering or downpipes wet rot or even insect attacks such as termites damaging the ends of the bearings. Additionally if your roofer has used material that is much heavier than your previous roof it can sag for the same reason.