10 Signs You Need a New Roof (Especially in South Alabama)

Your Roof Is 15–20 Years Old

Age is the most reliable predictor of roof failure — and in South Alabama, the clock runs faster. Architectural shingles manufactured today carry 30-year warranties, but those warranties are written for moderate climates. In Mobile and Baldwin County, 15–17 years marks the point where most shingle roofs have significantly degraded adhesive seals, brittle granule coating, and compromised underlayment.

At 15 years: Start having annual inspections. At 18 years: Begin budgeting for replacement. At 20 years: Consider this an emergency if you haven't already scheduled replacement — heading into hurricane season with a 20-year shingle roof in the Gulf Coast is an unnecessary risk.

Curling or Buckling Shingles

Shingles curl when the asphalt base dries out and the layers separate. You'll see two forms: cupping (the edges of shingles curl upward) and clawing (the middle of the shingle lifts while the edges stay flat). Both indicate that the shingles are approaching the end of their functional life.

Gulf Coast significance: Curling shingles are particularly dangerous here because the adhesive seal strip — already weakened — loses its grip on a curled shingle almost entirely. In any significant wind event, curled shingles are the first to become flying debris. If you can see curling from the ground, the condition is advanced.

Missing Shingles — Repeatedly

One or two missing shingles after a severe storm can be repaired. Multiple missing shingles, or missing shingles after relatively minor storms, indicate that the adhesive seals have degraded across the roof. You're not dealing with isolated damage — the whole roof is failing.

The repair trap: Some homeowners spend $400–$600 replacing a few shingles after every storm, year after year, on a 17-year-old roof. The cumulative repair cost often exceeds what a timely replacement would have cost — and the repair cycle never ends because the underlying roof system continues to deteriorate.

Granules in Your Gutters and Downspouts

Granule loss is the most diagnostic sign of shingle aging. Asphalt shingles are coated with granules that protect the asphalt layer from UV radiation. As shingles age, granules loosen and wash off in rain. You'll see them accumulating in gutters, collecting at the base of downspouts, or forming dark patches in your lawn after rain.

Timing matters: Some granule loss in the first 1–2 years is normal — loose granules from manufacturing. Heavy granule loss on a 5+ year old roof, or granule loss you can observe from the ground as bare spots or color variation, indicates meaningful degradation. In South Alabama's UV environment, granule loss accelerates deterioration quickly — bare asphalt cracks and fails within 3–5 years.

Daylight Visible Through the Attic

If light gets through, so does water. On a bright day, go into your attic and look at the underside of the roof decking. Any visible daylight — through cracks, gaps at penetrations, or failed seams — means the roof system has a significant opening. This is an emergency situation, not a "monitor it" situation.

While you're in the attic: Also look for water stains on decking, wet or compressed insulation, and mold growth. Any of these confirm active water intrusion. South Alabama's humidity means mold grows fast once moisture enters.

Sagging Roof Deck

A roof deck that sags or has a wavy appearance indicates structural compromise. This is caused by: prolonged moisture damage to the decking (OSB or plywood that has delaminiated from repeated wetting), failed rafter or truss members, or inadequate spacing of decking support structure. Sagging is not a cosmetic issue — it indicates the structural layer of the roof system is failing.

Do not delay on sagging. A compromised deck that fails during a storm creates a dangerous situation. The repair scope typically extends beyond re-roofing to include structural decking replacement and potentially rafter or truss repair.

Water Stains on Interior Ceilings or Walls

Water stains are evidence of a leak that is already happening — often for longer than you think. By the time a leak shows up as a stain on an interior ceiling, the water path typically runs for several feet from the point of entry. The visible stain is rarely directly below the source.

Gulf Coast urgency: South Alabama's humidity means that once water reaches interior materials — drywall, insulation, wood framing — mold can begin growing within 24–72 hours in summer conditions. Don't wait for the stain to get bigger. Get an inspection immediately.

Higher-Than-Normal Energy Bills

A failing roof compromises attic thermal performance. Compromised or missing shingles allow direct heat gain. Degraded ridge and soffit ventilation prevents proper attic air circulation. Failed insulation from water intrusion loses its R-value. The result: your HVAC system works harder to maintain temperature, and you pay for it on your utility bill.

Context: South Alabama summers are brutal — months of 95°F+ heat with high humidity. A properly functioning roof with good ventilation keeps attic temperatures manageable. A failing roof can push attic temps to 150°F+, which drives up cooling costs and shortens HVAC equipment life.

Moss, Algae, and Dark Streaking

The dark streaks on South Alabama roofs are blue-green algae — Gloeocapsa magma. This organism feeds on the limestone filler in asphalt shingles and thrives in humid climates. The Gulf Coast's combination of shade, humidity, and moderate temperatures makes it ideal algae territory. Most homeowners notice the dark vertical streaks running down their roofs.

When algae becomes a replacement trigger: Algae growth alone doesn't require immediate replacement — it's treatable with appropriate cleaning solutions and algae-resistant shingles prevent recurrence. However, when algae is combined with other signs of aging (curling, granule loss, age over 15 years), it's a reliable indicator that the roof system is degraded enough to warrant replacement.

Moss is more serious than algae. Moss retains moisture against the shingle surface, accelerating granule loss and shingle degradation beneath it. Significant moss growth on a roof over 12 years old warrants a full inspection.

Your Neighbors Are Replacing Theirs

Roofs in the same neighborhood are often the same age — and fail around the same time. If you've noticed several neighbors getting new roofs in the last 12 months in a neighborhood that was built in the same development period, your roof is likely the same age and approaching the same end-of-life point.

Don't wait for the obvious failure. Planning a replacement on your schedule — when you choose the contractor, the time of year, and the material — is dramatically better than an emergency replacement after a storm when every contractor in the area is booked and material prices spike. Proactive replacement also ensures you can upgrade to FORTIFIED™ standards if appropriate, which reactive post-storm insurance replacements often can't accommodate.