What Causes Roof Sagging & What You Can Do About It?

Roofs that don’t have sufficient structural support for its weight can begin to sag. It’s a problem that can make your home’s curb appeal and foundation suffer. 

Find out how you can deal with a sagging roof from a leading roofing company

What Causes a Roof to Sag?

Excessive weight or a load on the roof can result in sagging. Some of the most common loads include snow, ice, window and too many layers of shingles. 

A roofing system can also sag if a roofer improperly designs or installs it. Other structural problems that can also cause sagging include aging, damage to the system’s structural elements and failure of supporting systems, such as the walls and foundation. 

Roof sagging can exist in many forms, each with a different cause. Undersized rafters or missing internal bracing can cause sagging along the entire plane of a roof. Sheathing that’s too thin for the span can result in drooping between rafters or trusses. Fix this issue by investing in a high-quality sheathing the next time you get your roof replaced. 

How to Deal With It

There are many ways to address a sagging roof, depending on the severity of the problem. Most times, the framing is bolstered and stuffed internally. However, if it’s time for a new roof, it’s best to remove the old sheathing and install bigger rafters while the frame is exposed. This fix can address sheathing problems in truss-frame roofs. 

Severe sagging due to framing-related issues should be left to professionals. DIY work is strongly discouraged for fixes that require changing the original construction of the roof. 

Choose Spring Valley Roofing for your roof replacement project. All our installers are certified to install products from CertainTeed™, one of the best manufacturers of roofing materials. Call us at (610) 222-6061 or complete our online form to request an estimate. 

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