A sagging roof is a problem that typically happens to old roofs, and is characterized by a noticeable bow on the roofline. In this blog, roofing contractor Fortenberry Roofing discusses what causes sagging roofs and what can be done to fix it.
What Causes Sagging Roofs?
Sagging roofs are caused by too much weight or load on the roofing structure. A properly-built roof should be able to carry the weight of the roofing, as well as heavy rainfall and high winds. However, changes to the roofing structure, such as switching to heavy roofing like tile or slate, or re-covering the roof (installing a new roof over the old one) can drastically change its weight.
Sagging can also be caused by deterioration of the materials used to build the roofing structure due to age and/or quality of the wood used. Problems with the house foundations, indicated by cracks in the wall and uneven foundation posts, can also contribute to sagging roofs.
How to Fix Sagging Roofs
The good news is, sagging roofs can be fixed without resorting to roof replacement. The roofing structure can be bolstered to allow it to support the weight of the roof. If the roof is relatively new and still within warranty, the roofing contractor may conduct repairs at no cost if it turns out to be an installation error. If the roof is beyond its expected life span, it may be best just to have the roof replaced, paying special attention to addressing structural issues.
If the sagging has caused house foundation issues, then the foundations need to be fixed as soon as possible. Existing foundations may need to be bolstered by bell bottom pier or a similar foundation repair method. Drainage and gutter issues may also have to be addressed to avoid similar problems in the future. Addressing such issues are best left to professionals to ensure long-lasting results.