Fix Sagging Roof Line

Push up on the plywood until the foam is touching the underside of the roof decking.

Fix sagging roof line.

The first step is to the basement first. That s how to fix a sagging roof. Move the jack in increments of one inch to allow for the roof to be able to move with it without cracking. Look for any kind of damage including rot cracks breaks and more.

Typically they are lapped and then toe nailed together in its center so that the correct length can be achieved. Why is my roof sheathing sagging between the trusses. To learn more about roofs and attics see these other blog posts. Then inspect the metal or plywood gusset plates.

The easiest way to straighten rafters is to jack them into position. It might be a simple fix that can be done by jacking up loose rafters adding struts or more economically by. If your roof is sagging under the weight of too many shingles ideally all the shingles should be removed and a new set installed. 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.

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. 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. Fortunately there are different ways to jack up a sagging roof.

If the sagging roof is due to rotting or warping roof decking the repair will be much easier. Unfortunately most roof structural defects don t respond well to homeowner fixes and require professional evaluation and repair. 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. 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.

A sagging roof line may original from the ceiling s horizontal rafters. 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. This gives your roofer a chance to inspect the flashing and roof underlayment for damage.