Fix Sagging Roof Line

Using a flashlight inspect the rafters and decking in your attic especially in the areas where your roof is sagging.

Fix sagging roof line. This may be problematic in winter months but allowing the roof to continue to sag can lead to greater problems such as a cave in. Then inspect the metal or plywood gusset plates. Check the ceiling for sagging by attaching a string on one end of the beam and run it along the bottom edge of the beam. If the line does not continually follow the bottom of the beam and the bottom of the beam is below the line the beam is sagging.

When the framing of the roof is put together quite frequently two of the ceiling rafters will be fixed together as this will create a much longer span. Typically they are lapped and then toe nailed together in its center so that the correct length can be achieved. This gives your roofer a chance to inspect the flashing and roof underlayment for damage. Unfortunately most roof structural defects don t respond well to homeowner fixes and require professional evaluation and repair.

If your roof is sagging under the weight of too many shingles ideally all the shingles should be removed and a new set installed. Move the jack in increments of one inch to allow for the roof to be able to move with it without cracking. Problems with and repairs to a sagging roof should be evaluated by professionals. Next place your piece of plywood and styrofoam foam side up against the damaged roof decking.

It might be a simple fix that can be done by jacking up loose rafters adding struts or more economically by. The easiest way to straighten rafters is to jack them into position. After that use a piece of lumbar strapping to keep the plywood in place until you can get a roofing repair expert to fix it. That s how to fix a sagging roof.

A sagging roof line may original from the ceiling s horizontal rafters. The first step is to the basement first. Why is my roof sheathing sagging between the trusses. If the sagging roof is due to rotting or warping roof decking the repair will be much easier.

To learn more about roofs and attics see these other blog posts. Push up on the plywood until the foam is touching the underside of the roof decking. However the trick to this process is to do it very slowly so it may take a few weeks before you get the rafter into a position where it is straight again.