How To Fix A Sagging Flat Roof

The first step is to find out how many rafters are sagging and if anything else is damaged.

How to fix a sagging flat roof.

Typically the roof sheathing is about three eighths of an inch thick. 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. Determine the extent of damage. How to straighten sagging roof rafters.

You may find that. Drill holes in angle iron. So what happens with those elements is that you get more sagging and delamination of the roof sheathing. Step 1 the first step is to the basement first.

Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your. If the sagging roof is due to rotting or warping roof decking the repair will be much easier. You can simply have the old sheathing replaced with better material when it s time for new roofing. Remedies for a sagging roof there are a number of remedies for traditional rafter style roof frames depending on the problem and its severity.

A poorly designed gutter should be replaced to prevent water from pooling on the roof and the resulting water damage that causes sagging. Often the framing can be bolstered and beefed up internally but if the roofing material needs replacement anyway it may be best to tear off. 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. And in a 30 year old house you tend to not have very much ventilation.

The sagging may be directly repaired with the installation of angled braces that shore up the rafters. You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof. If the roofing materials are not in good condition replace the shingles and flashing. Also inspect the metal or plywood gusset plates used where your wood meets on a truss.