Fix Sagging Roof Line

Typically they are lapped and then toe nailed together in its center so that the correct length can be achieved.

Fix sagging roof line.

You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof. Why is my roof sheathing sagging between the trusses. Unfortunately most roof structural defects don t respond well to homeowner fixes and require professional evaluation and repair. A sagging roof line may original from the ceiling s horizontal rafters.

It might be a simple fix that can be done by jacking up loose rafters adding struts or more economically by. Look for any kind of damage including rot cracks breaks and more. To learn more about roofs and attics see these other blog posts. That s how to fix a sagging roof.

The first step is to the basement first. Next place your piece of plywood and styrofoam foam side up against the damaged roof decking. Push up on the plywood until the foam is touching the underside of the roof decking. 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. If your roof is sagging under the weight of too many shingles ideally all the shingles should be removed and a new set installed. 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. 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.

Then inspect the metal or plywood gusset plates. Using a flashlight inspect the rafters and decking in your attic especially in the areas where your roof is sagging. If the sagging roof is due to rotting or warping roof decking the repair will be much easier. Fortunately there are different ways to jack up a sagging roof.

This gives your roofer a chance to inspect the flashing and roof underlayment for damage. 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. Move the jack in increments of one inch to allow for the roof to be able to move with it without cracking.