You can replace one damaged shingle yourself if the damage is isolated and you're comfortable on a ladder

A single cracked, curled, or missing shingle doesn't require a full roof replacement. If the shingle is torn but the underlying wood is intact, and the surrounding shingles are in good condition, you can patch it in an afternoon with basic tools. The job involves removing nails, sliding out the damaged shingle, and nailing down a new one — all work you can do from a ladder without special equipment.

The catch: if multiple shingles are damaged, if the wood underneath is soft or rotted, or if your roof is steep or high, call a roofer instead. A single shingle costs $5 to $15. A fall costs far more. This guide covers the straightforward case: one damaged shingle on a roof you can safely access.

Key Takeaways

  • You need a pry bar, a hammer, roofing nails, and a replacement shingle that matches your existing roof in color and material.
  • The shingle above the damaged one holds nails that must be removed before you can slide the damaged shingle out.
  • New shingles come with adhesive strips on the bottom; you also nail them down, using four nails per shingle in the standard pattern.
  • If the wood under the shingle is soft, spongy, or dark, stop and call a roofer — that's rot, and it spreads.
  • Work on a dry day, because wet shingles are slippery and nails won't drive cleanly into damp wood.

Gather your tools and materials before climbing

You'll need a pry bar (a flat tool, sometimes called a cat's paw), a hammer, a box of roofing nails (usually 1.25 inches long for standard shingles), and a replacement shingle. Buy the shingle at a home center or roofing supplier — bring a photo or a piece of your existing shingle to match the color, profile, and material. Asphalt shingles are most common and cost $1 to $3 each; wood or architectural shingles cost more.

You'll also want work gloves, a stable ladder rated for your weight plus 250 pounds, and a helper to hold the ladder. Wear shoes with good grip. If your roof is steeper than a 6-in-12 pitch (meaning it rises 6 inches for every 12 inches of horizontal run), or if the roof is higher than one story, use a roof harness or hire a roofer. A harness costs $30 to $50 to rent and takes 10 minutes to learn; a fall costs everything.

Remove the nails holding the damaged shingle in place

Position your ladder so you can reach the damaged shingle safely without overreaching. Climb up and locate the shingle above the damaged one — that's the one you need to work on first. The nails that hold the damaged shingle are driven through the shingle above it, so you can't see them from below. You have to lift the upper shingle slightly and pry out those nails.

Slide your pry bar under the upper shingle, near the nails (usually four of them, spaced evenly across the width). Pry gently — you're not trying to remove the upper shingle, just lift it enough to access the nails underneath. Once you can see the nails, work the pry bar under each nail head and lever it out. The nails will resist; take your time. Once the nails holding the damaged shingle are out, you can also remove the nails from the damaged shingle itself if it's easier to work with it loose.

Slide out the damaged shingle and inspect the wood underneath

With the nails removed, the damaged shingle should slide out. It may stick slightly because of the adhesive strip on the bottom — wiggle it gently side to side as you pull. Once it's out, look at the wood underneath. It should be solid, dry, and light-colored. If it's soft, spongy, dark, or has visible mold or mildew, stop. That's rot, and replacing one shingle won't fix it. Call a roofer to assess the damage.

If the wood is sound, you're ready to install the new shingle. Slide it into place, making sure it aligns with the shingles on either side and sits flat against the roof. The bottom edge should line up with the bottom edges of the shingles to the left and right.

Nail down the new shingle in the correct pattern

New asphalt shingles have an adhesive strip along the bottom that helps seal them, but nails do the real work. You need four nails per shingle, placed in a specific pattern. Drive the first nail about 1 inch from the left edge and roughly 1 inch down from the top of the shingle (above the adhesive strip). Drive the second nail about 1 inch from the right edge, same height. Then drive two more nails between them, spaced evenly.

Use roofing nails — they have a large, flat head that won't pull through the shingle. Drive each nail straight in, not at an angle. The nail head should sit flush against the shingle, not sunk into it (which can tear the shingle) and not sticking up (which can catch water). If you miss the mark, pull the nail out and drive a new one a few inches away; don't leave holes.

Seal the upper shingle and check your work

Once the new shingle is nailed, you need to re-nail the upper shingle. Lift it slightly and drive four new nails through it into the new shingle below, using the same pattern you used for the new shingle. This locks everything in place and restores the seal.

Step back and look at your work. The new shingle should sit flat, align with its neighbors, and have no gaps or lifted edges. If the adhesive strip on the new shingle hasn't sealed yet (it takes a day or two in warm weather), press down gently on the bottom edge to help it stick. On a cool day, the adhesive may not set up at all — that's fine, the nails are holding it.

When to stop and call a roofer instead

If the wood under the shingle is damaged, if multiple shingles are torn or missing, or if you're uncomfortable on a ladder, hire a roofer. If the shingle is part of a larger pattern of damage — curling, missing granules, or leaks in multiple places — the roof may be near the end of its life, and a roofer can tell you whether patching makes sense or replacement is coming soon.

A roofer will also spot problems you might miss: flashing damage, ventilation issues, or structural concerns. A single shingle replacement costs $75 to $150 in labor; a roof repair that goes wrong costs thousands. When in doubt, get a second opinion.

Frequently Asked Questions

Can I replace a shingle in cold weather?

Yes, but the adhesive strip on the new shingle won't set up in temperatures below 50°F. The nails will hold it in place, but the seal won't be as strong until the weather warms. If you're in a cold climate, plan the repair for a warmer day if possible, or accept that the shingle may lift slightly until spring.

What if I can't find a shingle that matches my roof?

Bring a photo or a sample to a roofing supplier, not just a home center. Suppliers carry more colors and styles. If your roof is old and the color is discontinued, a roofer may be able to source it or suggest a close match. A slightly different shade is usually less noticeable than a gap or a leak.

Do I need to remove the old adhesive before installing the new shingle?

No. The old adhesive won't interfere with the new shingle. Just slide the new one in and nail it down. If there's a lot of old adhesive buildup, you can scrape it off with a putty knife, but it's not necessary.

How long does a replacement shingle last?

A new shingle should last as long as the rest of your roof — typically 15 to 25 years for asphalt shingles, depending on climate and maintenance. If your roof is older than 15 years and you're replacing individual shingles frequently, the whole roof may be nearing the end of its life.

What if the shingle keeps curling up after I replace it?

Curling usually means the roof is too hot or the ventilation is poor. A single replacement won't fix that. If curling is widespread, have a roofer check your attic ventilation. If it's just the one shingle, make sure the nails are driven flush and the adhesive has sealed (wait a warm day or two). If it still curls, the roof may have an underlying problem worth investigating.