10 Signs You Need a New Roof

Roofs rarely fail all at once. They give warnings for months, sometimes years, and homeowners usually notice at least one of them before the first drip appears. The trick is knowing which signs mean "keep an eye on it," which mean "get this repaired," and which mean the roof has reached the end of its service life.

1. Granules collecting in your gutters

Asphalt shingles are protected by a layer of mineral granules. Those granules are the sunscreen — they take the UV hit so the asphalt underneath doesn't dry out and crack. A handful of granules after a new install is normal. Piles of them in the gutters and at the bottom of downspouts on a roof that's over fifteen years old is the roof telling you it's wearing through. Once you can see dark, shiny asphalt patches on the shingle surface, that area has lost its protection.

2. Curling, cupping or clawing edges

Look along a sunny-facing slope. If shingle corners are lifting up like the edges of a dried leaf, the mat underneath has lost moisture and is shrinking. Curled shingles catch wind, and once wind gets under a shingle it takes the whole course with it. Scattered curling can sometimes be repaired. Curling across an entire slope is a replacement conversation.

3. Missing shingles after every storm

Middle Tennessee gets straight-line winds that will find any weakness in a roof. One or two missing shingles after a serious storm is bad luck. Losing shingles in every thunderstorm means the sealant strips have failed across the roof — the adhesive that bonds each course to the one below has gone brittle, and there's nothing holding the system together but nails.

4. Daylight or water stains in the attic

Go into the attic in the middle of a bright day and turn the lights off. Any daylight coming through the decking is a hole. Then look at the underside of the sheathing and the rafters for dark streaks, staining or actual rot. Water travels along framing before it drops, so the wet spot in the attic is often nowhere near the leak on the roof. This is one of the most useful five-minute checks a homeowner can do.

5. Sagging rooflines

Stand at the corner of the house and sight along the ridge and the eaves. Both should be straight. A dip, wave or visible sag means the decking or the structure below is compromised, usually from long-term moisture. This one isn't a "wait and see" item — have it looked at.

6. Failed flashing around penetrations

Chimneys, skylights, vent pipes and the valleys where two slopes meet are where most leaks actually start — not in the middle of a shingle field. Rusted flashing, cracked pipe boots (the rubber collars around plumbing vents dry-rot faster than the shingles around them) and failed caulk are common and often repairable on their own.

7. Nail pops and exposed fasteners

As decking expands and contracts, nails can back out and tent the shingle above them. Each popped nail is a small hole in your roof with a shingle sitting on top of it. A few can be sealed. Dozens across the roof indicate the whole field is moving.

8. Hail bruising

Hail damage is the sign homeowners miss most, because it often isn't visible from the ground. A hail strike knocks granules off and bruises the mat underneath — press a thumb on it and it feels soft, like a bruise on an apple. Those bruises don't leak today; they leak in three years when the exposed asphalt cracks. If a hail storm has come through your area, this is worth a professional look, and it's usually an insurance claim rather than an out-of-pocket repair.

9. Moss, algae and dark streaks

In our humidity, dark streaks are usually algae, which is cosmetic. Moss is different: it holds moisture directly against the shingle and lifts edges as it grows. Moss on a north-facing slope should be dealt with properly — never with a pressure washer, which strips granules faster than weather does.

10. The roof's age

A standard 3-tab asphalt roof in Tennessee's climate generally gives 15–20 years. An architectural shingle roof typically gives 25–30. If yours is past those numbers and you're seeing any two other items on this list, you're maintaining a roof that's already done its job. Replacing it on your schedule is considerably cheaper than replacing it plus drywall, insulation and flooring after a failure.

If you're seeing two or more of these on a home in Nashville, Franklin, Clarksville, Bowling Green or anywhere else we work, book a free inspection and we'll photograph what we find and put it in writing. No cost, and no obligation to hire us.