How often should you replace individual shingles on a roof?
When a single shingle needs replacing
- Missing or torn tabs after a storm. The underlayment beneath is now exposed to sun and rain.
- Creases across the shingle from wind lifting it and folding it back. A creased shingle can look fine but has lost its seal and will tear next time.
- Cracks through the mat.
- Nail pops that pushed up or punctured the shingle above.
- Hail bruises where the mat is fractured or the asphalt is exposed.
How often is too often
One or two repairs over the life of a roof is normal. Replacing shingles on several slopes after each storm season is not. It usually means the sealant strips have stopped bonding, the shingles are brittle, or there was a nailing problem from the start. At that point each repair tends to crack neighboring shingles, and the money is better spent on a replacement.
Matching is part of the decision
New shingles rarely match a weathered roof exactly, and product lines change over the years. A few replacements on a back slope are acceptable to most people; a patchwork on the front slope may not be. If storm damage is behind the repairs, the claim may need to address matching; see partial roof replacement and matching. For leaks that keep returning, read common roof leak causes and wind damage to roofs in Georgia.