What Causes Roof Sagging?

A sagging roof is a clear indication there’s a problem that needs to be fixed immediately. In general, roof sagging is due to insufficient structural support for the load. What specifically causes this can range from improper roof design or construction to failures of other supporting systems, such as your home’s foundation and walls. 

Common Causes of Roof Sagging

As mentioned, the main reason roofs sag is because there’s too much load for the existing structure. Some common loads that can add to your roof’s weight are snow and ice, wind and excessive layers of shingles. If you have solar panels on your roof, these could also affect the total load that the structure needs to handle.

In other cases, roof sagging is caused by structural problems, such as improper design or construction and issues with your home’s foundation and walls. Your roof’s age could also be a factor since it makes the structural elements of your roof prone to damage.

Solutions to Roof Sagging

For traditional rafter-style roof frames, there are different solutions that can be considered to fix sagging. However, this depends on the severity of the problem. Typically, roofers can internally bolster and beef up the framing. But if the roofing materials already need replacement, it would be more effective to remove the old sheathing and install larger rafters. 

For truss-frame roofs with sheathing that’s too thin for the span, you can simply replace the old sheathing your roof replacement. 

If you want the best roofer, look no further than LePage and Sons Roofing LLC. We are a GAF Master Elite® Roofing Contractor, so you can be sure we’re capable of providing top-notch roofing solutions for your home. Call us at (508) 295-6483, or complete our contact form to schedule a free consultation.