# 8 Signs You Need a New Roof (Before the Leak Finds You)

> Missing shingles are obvious. Granule loss and sheathing rot aren't. 8 signs your roof needs replacement — plus the repair vs. replace framework.

![8 Signs You Need a New Roof (Before the Leak Finds You)](/images/roofing/shutterstock_154823066.jpg)

Reviewed by the Remodel Your Home editorial team · Updated August 19, 2026

The average asphalt shingle roof lasts 20–30 years depending on shingle grade, attic ventilation, and climate. Replacement costs $8,000–$20,000 nationally — but water infiltration from a failing roof causes structural damage that quickly multiplies that number.

## Signs It's Time to Replace (Not Just Repair)

These indicators—from contractor experience and industry data—signal that repair costs will exceed replacement value, or that underlying damage makes spot repairs futile.

1

### Curling, cupping, or clawing shingles

Curling at the edges (cupping) or upward at the middle (clawing) indicates shingles have reached the end of their service life. UV degradation and moisture cycling cause both — neither is reversible.

2

### Significant granule loss

Asphalt shingles shed granules as they age. Check your gutters after rain — heavy granule accumulation means the protective coating is gone and the asphalt substrate is exposed to UV. Accelerated deterioration follows.

3

### Daylight visible in the attic

Light penetrating through the roof deck indicates gaps in decking, failed flashing, or missing shingles. Any daylight means water can follow the same path.

4

### Sagging roof deck

A wavy or sagging roofline signals structural damage — rotted decking, failing rafters, or truss damage. This requires immediate attention regardless of shingle condition.

5

### Roof age at or beyond rated lifespan

3-tab shingles: 15–20 years. Architectural (dimensional) shingles: 25–30 years. Impact-resistant shingles: 30–40 years. A roof at or past its rated life should be inspected annually and replaced proactively.

6

### Granules in gutters after a hailstorm

Hail accelerates granule loss and causes micro-fractures in shingle surfaces not always visible from the ground. A post-storm professional inspection is warranted — most insurance policies cover hail damage.

7

### Multiple active leaks or repeated repairs

If you've patched the same general area more than twice, the underlying cause hasn't been addressed. Repeated repairs also signal that adjacent areas may be failing.

8

### Missing or lifted flashing at penetrations

Flashing around chimneys, skylights, vents, and valleys is the most common source of leaks. Failing flashing is sometimes repairable, but if it's corroded or was improperly installed, replacement is the right call.

## When Repair Is the Right Call

Not every problem requires full replacement. Here are situations where targeted repair is cost-effective.

| Situation | Recommended Action |
| --- | --- |
| Isolated missing shingles after a wind event | Spot repair is appropriate if the surrounding shingles are in good condition. |
| Single flashing failure | Re-flashing a specific penetration is a reasonable repair if the roof is otherwise sound. |
| Minor granule loss on a roof under 15 years old | Sealant application can extend life; monitor annually. |
| Gutter or soffit damage without shingle damage | Address the exterior component — may not require roofing work. |

## What Goes Into a Roof Replacement Project: Material Reference

Roofing bids look similar on paper but can differ significantly in underlayment grade, ice-and-water shield coverage, and flashing scope. A complete roof replacement invoice should include all of these.

| Material / Component | Details & Typical Quantities |
| --- | --- |
| **Shingles** | Measured in squares (100 sq ft). Architectural shingles: $90–$130/square installed. Premium: $130–$200/square. Ask for the specific product name and warranty class — not just "30-year architectural." |
| **Synthetic underlayment** | Entire roof deck. Synthetic (Titanium, RhinoRoof, Feltbuster) outperforms #15 or #30 felt in wind and moisture resistance. Verify synthetic, not felt, is specified. |
| **Ice-and-water shield** | Eaves (min. 24" per code, more in cold climates), valleys, and all penetrations. IWS is $50–$80/square for the material. Ask how many squares of IWS are included in the bid. |
| **Drip edge** | Aluminum drip edge at eaves and rakes: standard, should be included. Verify it's included, not optional. |
| **Ridge cap** | Linear footage of ridge, hips, and dormers. Ridge cap shingles are typically included in shingle estimates — verify. |
| **Flashing** | Step flashing, counter flashing, valley flashing, pipe boots: all should be new on a full replacement. Verify no existing flashing is being reused. |
| **Decking replacement** | If damaged OSB or plywood is discovered during tear-off: $80–$120/sheet is a reasonable rate to verify before signing. |
| **Ventilation** | Ridge vent and soffit vent are part of the roofing system — ask whether these are being inspected and replaced if needed. |

## Next Steps

Once you’ve confirmed replacement is warranted, the next decisions are scope, materials, and contractor selection:

- [Roof Replacement Cost Guide — what to budget and how to evaluate bids](/roof-replacement-cost/index.md)
- [Find Roof Replacement contractors near you](/roof-replacement/index.md)
- [10 questions to ask your roof replacement contractor](/roofing-contractor-questions/index.md)

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Source: https://remodelyourhome.com/roof-replacement-signs/