A sagging roof is a reason to act soon. A small dip doesn’t always mean the roof is about to fail. But something is wrong underneath, and it’s best to find out what before it gets worse.
1. Water damage and dry rot
When shingles, tiles or flashing are broken or missing, water gets into the wood under the roof. Over time that wood rots and weakens, and the roof can start to dip. Flashing around valleys, chimneys and walls is a common place for water to get in.
The fix is to stop the leak and replace the rotted wood. We fix dry rot at a fixed price per piece of wood from the same price list. It is not billed by the hour, and we show you photos of what we found. See dry rot repair.
2. Too much weight
Every roof is built to hold a certain weight. Extra layers of roofing add a lot. When new shingles are laid over old ones, the house carries the weight of two roofs. That’s one reason we recommend a complete tear-off instead of an overlay.
3. Poor materials or installation
Low-quality materials and poor installation wear out faster and let water in sooner. That leads back to cause number one. Materials should also suit the local climate. In Sacramento that means handling long, hot summers.
What to do about a sagging roof
A sagging roof needs to be looked at in person. Watch for signs that often come with it, like ceiling stains, soft spots or cracked drywall. Read about roof leak repair if you’re also seeing water inside.
Related: Roof inspection · Roof repair · Roof replacement
Worried about a dip in your roof? We’ll inspect it for free, take photos, and give you a written quote the same day. Call (916) 678-9786 or request a free inspection.
