Roof Starting To Sag

Sagging rafters can lead to serious problems with the entire roofing system.

Roof starting to sag.

That s how to fix a sagging roof. Sagging or low spots in a flat roof may be due to undersized or weakened roof joists or problems with the buildup layers beneath the exposed roofing. Then the beam or roof may sag. The excessive heat melts the adhesive that binds the fabric to the board under the roof.

Why roofs sag as mentioned roofs sag because there s too much weight or load for the existing structure. The most common reason for sagging roof liners is parking the car in the sun. On average a roof lasts between 15 to 30 years depending on the design the materials used and your climate. 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.

Push up on the plywood until the foam is touching the underside of the roof decking. Next place your piece of plywood and styrofoam foam side up against the damaged roof decking. Cracked rafters and trusses can cause sagging. A sagging roof line may original from the ceiling s horizontal rafters.

If a roof has been re roofed with heavier roofing material than the original roof was engineered for. Rotten or saturated sheathing can also cause roof lines to sag. If the framing is. Although heat is not the only reason for a sagging roof lining it is a considerable factor.

If your roof is more than 30 years old rebuilding it will be the most effective approach to dealing with sagging. If you notice that there is a visible dip in your roof chances are you have a problem with one or several rafters and you may soon be facing more issues like water leaks bowed out walls or your roof caving in on you. Problems with the roof itself aren t the only reason a roof might sag. 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 is the easiest problem to repair. If your roof s structure is unsound because of leaks or termite damage you may start to see bowing in your roof. Additionally if your roofer has used material that is much heavier than your previous roof it can sag for the same reason. A car headliner can also start sagging due to water or other factors.