How to Fix a Sagging Roof
If your roof is sagging, it may be caused by the rafters or trusses that are underneath it. It may also be due to damaged shingles or gutters that need to be fixed. Luckily, there are several easy ways to fix a sagging roof.
Problems with rafters or trusses
When you notice that your roof is sagging, you may have some structural issues with your rafters or trusses. This may be caused by improper installation, allowing nails to pull out, or inadequate attic ventilation. Both of these factors allow moisture to accumulate in the attic and cause the wood to expand and contract. Over time, this can cause your roof structure to crack or warp. Beaumont Roofer
In such a situation, you can repair the rafters or trusses by repairing the weakened parts. To do this, you can use “L” channels to mount the rafter or truss. The width of these channels should be about 3/8 inch, and they should have holes at the base and side.
Imperfections in roof surface
Imperfections in the surface of your roof can make the job of fixing a sagging roof harder. These imperfections can be caused by a number of different factors, including a faulty gutter design or damaged shingles. Over time, these imperfections will weaken the surface of your roof and will cause the roof to sag. Furthermore, water damage can cause mold and mildew to grow, which can eventually cause the entire roof to collapse.
The most common cause of a sagging roof is water damage. Because roofs are constantly exposed to the elements, they are more vulnerable to damages than any other part of the house. The first sign of a sagging roof is water draining off of the roof. Other signs include damaged shingles, missing shingles, and ineffective gutters. Fortunately, there are simple ways to repair a sagging roof.
A cracked or damaged shingle on a sagging roof is a good candidate for repair. You may have shingles leftover from previous roofing projects, or you can buy new shingles to replace the damaged ones. Standard three-tab shingles cost $15 to $20 per square foot and can be purchased at home centers and lumberyards.
One way to repair damaged shingles is to install plywood over the affected area. You can then adhere a piece of rigid styrofoam foam side up to the plywood. It’s important to make sure that the foam touches the underside of the roof decking. You can also use lumbar strapping to hold the plywood in place. If you’re not comfortable doing the repairs yourself, consider hiring a professional roofer to inspect the area and provide a solution.
Imperfect gutter design
An imperfect gutter design can make your roof sag. It can cause the shingles to curl downward and cause the roof to lose its sturdiness. The problem can also be caused by an improper gutter system or by damaged shingles. These problems can cause moisture to get trapped on the roof and cause mildew and mold to grow. Over time, a sagging roof will become more difficult to repair.
To fix this issue, you can use a power drill to remove the damaged gutter spikes. You can then replace them with gutter screws. You can purchase gutter screws for between $5 and $12 per box.