Roof Shingles Damaged or Missing
Damaged or missing shingles are one of the most visible roofing problems — and one of the most fixable with basic tools. A single missing shingle or small section of cracking can be replaced in an afternoon for $50–$150 in materials. The key is matching the replacement shingle to your existing roof and working only in dry, calm conditions. If more than 25% of your roof shows damage, a full replacement quote is worth getting.
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Common Symptoms
- Visible missing, cracked, or curled shingles from the ground
- Granules accumulating in gutters or downspout splash zones
- Dark patches or discoloration on sections of the roof
- Bare spots where the black underlayment is exposed
Most Likely Causes
- 1
Wind Damage
High winds lift shingles from the edges and corners, tearing the sealant strip that bonds rows together. A single storm gust can remove several shingles. Wind damage is most common at roof corners, ridges, and rakes (the sloped edges at the sides of the roof).
- 2
Age and UV Degradation
Asphalt shingles lose granules and flexibility over time. Granule loss exposes the asphalt to UV light, which causes cracking, curling, and brittleness. Shingles over 20 years old typically show widespread granule loss and curling at the edges — a sign the roof is near end of life.
- 3
Hail Impact
Hail causes impact craters (bruises) on shingles that accelerate granule loss and cracking. The damage may not be visible from the ground — a close-up inspection or insurance adjuster inspection is needed after hail events larger than quarter-size.
- 4
Poor Installation or Fastener Failure
Shingles nailed too high ('high-nailing') or with too few nails pull away more easily in wind. Rusted or loose nails can cause shingles to pop up over time, creating gaps that allow water infiltration.
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Quick DIY Checks
Do not perform any roof work in wet, icy, or windy conditions. Wet shingles are extremely slippery. Work only on dry days with no forecast rain for at least 24 hours.
Asphalt shingles over 20 years old are brittle and often crack when walked on or handled. If your shingles shatter when you try to lift them, the roof likely needs full replacement rather than patching.
- 1Inspect from the ground with binoculars — look for lifted, curled, cracked, or missing shingles. Note the location of any damaged areas relative to chimneys, vents, or valleys so you can find them on the roof.
- 2Check gutters for granule buildup — heavy granule loss is a sign of shingle wear across the whole roof, not just the visible damaged areas. This indicates the roof may be nearing the end of its service life.
- 3Count missing or visibly damaged shingles and note their exact position. This determines whether a simple patch repair is appropriate or a larger section replacement is needed.
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Try Pro — $7.99/mo- 4Buy matching replacement shingles — bring a sample from an existing shingle or a clear photo to the hardware store. Shingle color weathers over time, so a perfect match from a new bundle may not be possible; get the closest available.
- 5Carefully lift the surrounding shingles above the damaged area and remove the roofing nails holding the damaged shingle in place using a pry bar. Slide out the old shingle.
- 6Slide the new shingle into position and nail it at the correct position — 4 nails per shingle, placed about 1 inch from each edge and about 1 inch above the shingle below the cutouts (the standard nail line).
- 7Apply roofing cement under the overlapping edges of the shingles above to re-seal the sealant strip. Press the tabs firmly down over the new shingle.
- 8If more than 25% of the roof surface is damaged, get a full replacement quote from 2–3 licensed roofers before committing to ongoing patch repairs — replacing patches on a failing roof is cost-ineffective.
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Repair vs Replace
If the roof is under 15–20 years old and damage is limited to a few shingles, repair is clearly the right choice. A bundle of architectural shingles covers about 33 sq ft and costs $30–$60. If the roof is over 20 years old, widespread granule loss is visible in gutters, or damaged areas exceed 25% of the roof surface, get replacement quotes — patching is cost-ineffective past this threshold.
Est. Repair Cost
$50–$300 (DIY)
Est. Replacement Cost
$500–$2,000 (pro patch) or $8,000–$25,000 (full replacement)
Recommended Tools & Parts
- Buy on Amazon →
Roofing Cement
Asphalt-based sealant for re-bonding overlapping shingle edges and sealing around nail heads. Essential for shingle repair.
$8–$15
- Buy on Amazon →
Roofing Nails
1-3/4" or 2" galvanized roofing nails for securing replacement shingles. Use the same nail length as original installation.
$8–$15 per lb
- Buy on Amazon →
Flat Pry Bar
Flat pry bar for lifting surrounding shingles and removing roofing nails without damaging the shingle above.
$10–$20
Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.
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Read guide →Save $150+ on a single service call
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Frequently Asked Questions
- How many missing shingles is too many to patch?
- There's no hard number, but as a rule of thumb: if the damaged area covers more than 25–30% of the roof, or if the damage is spread across multiple sections rather than concentrated in one area, a full replacement is more cost-effective than ongoing patches. Each patched section is also a potential future leak point as the surrounding older shingles continue to age.
- Can I install new shingles over old ones?
- Building codes in most jurisdictions allow one layer of new shingles over an existing layer (called re-roofing or overlay). This is cheaper than a full tear-off but adds weight and may hide underlying deck damage. Most roofing professionals recommend a tear-off so the deck can be inspected. A third layer is generally not allowed by code.
- How long do asphalt shingles last?
- 3-tab asphalt shingles typically last 15–20 years. Architectural (dimensional) shingles last 25–30 years. Premium impact-resistant shingles can last 40+ years. Actual lifespan depends heavily on climate, ventilation, and installation quality. In hot, sunny climates with wide temperature swings, expect the lower end of these ranges.