Sagging is a roofing condition where the framing becomes noticeably bowed, affecting the roof line. In addition to having an adverse effect on the house’s looks, it also indicates major structural problems that may require roof replacement.

The Causes of Roof Sagging
A sagging roof is the result of a roof framing that’s unable to support the weight of its outer layers. When designing a new roof, a builder or roofer must take into account factors like the weight of the roofing material and the load exerted by rain, snow and wind. Calculation errors can result in parts of the roof bowing or collapsing over time.
This is why replacing the outer roofing material with a different one during roof replacement shouldn’t be done without a thorough roof inspection. The roofing contractor must install additional support if the existing framing isn’t designed for the increased load. A rebuild may also be necessary. Other factors that contribute to a sagging roof include poor attic ventilation, use of untreated lumber, and problems with the house foundations.
Can Sagging Roofs Be Fixed?
Repairs are possible depending on the roof’s condition. Support components can be installed to reinforce framing if the damage is not as extensive. However, if the roof is in such a condition that repairs are impractical – as is often the case with severely sagging roofs – roof replacement with new framing would be the only practical solution.
If the cause is determined as problems with the house foundations, then it has to be addressed right at the source and have the house inspected by a house foundations specialist. Uneven settling can be caused by a number of factors that ultimately result in opposite ends of the house being pulled apart and resulting in cracks starting from the ground up. Once the foundation issues are addressed, have your roofing contractor inspect the roof for solutions to the sagging roof.
Bradford Xteriors is the best roofer serving customers in Columbus, OH, and the surrounding communities. Give us a call at (614) 483-6215. You can also fill out our contact form to schedule an appointment.