Repairing A Sagging Dip In Roof

Use your string line to determine how much the roof need to go up.

Repairing a sagging dip in roof.

Often a saggy roof can be repaired and reinforced. What causes a sagging roof line. Spotting a sagging area in your roof is always worrying. You can therefore easily identify whether your roof is sagging if you can see a swag curve or dip at its peak when you stand on the street.

The most important step when fixing dips in a flat roof is to determine the cause of the problem. Roof lines should be arrow straight. It might be something. If you can see a dip curve or swag on the peak when standing in the street your roof has a problem.

If structural damage or decomposition is to blame it may be best to tear out the section of roofing and repair the problem before filling the hole. It often occurs next to a roof penetration such as a chimney or dormer or at the edge of the roof as in the photo above and is easily verified by checking the area in the attic. Roof leak leakage of the roofing that has caused rot and partial collapse of the sheathing in the area of the leak is the 1 cause of a roof dip. 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.

If a roof dips in between rafters or trusses it s probably because the sheathing is too thin for the span. If your rafters are still sagging a bit and it is causing your roof to dish out a little in the center of the roof sides add a 2x4 that goes all the way across the rafters in the center of the length of the rafters. Sagging rafters can lead to serious problems with the entire roofing system. You can simply have the old sheathing replaced with better material when it s time for new roofing.

While some sagging roof causes can easily be handled by anyone who has a little diy knowledge some problems are a lot more complex and need the help of a professional to repair.