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Roofing · Map the roof’s history

Different shingle color in patches

Patches of different color are prior repairs. Know where they are, because patched areas are where the next leak usually starts.

Quick answerPatches of shingle in a different color are prior repairs. They are worth knowing about, because patched areas are where the next leak usually starts, and they tell you the roof has a history the seller may not have mentioned. Map them, look under them from the attic, and ask about them. You can do all of this yourself, no call needed.

A patch on its own isn’t a problem. It’s a clue. It tells you something went wrong in that spot once, and it may tell you what.

This is most common in homes built roughly 1980 to 2000. The polybutylene and aluminum-wiring window, 150 amp panels, R-22 systems and first-cycle architectural shingle.

1Why patches matter

  • They mark past trouble. Wind, a fallen limb, a leak around a vent or a storm all leave a repair behind.
  • Joins are weak points. Where new shingles meet old, the seal and overlap are often not as good as the original.
  • Mismatched shingle. A different product can age differently from the rest of the roof.
  • Hidden history. Repairs may not appear on disclosures, especially after a change of owner.

2How to check it yourself

  1. Map the patchesFrom the ground, with binoculars, sketch where each patch is and roughly how big.
  2. Look for a patternPatches around vents, chimneys or valleys point to flashing leaks. Scattered patches on one slope point to wind or storm damage.
  3. Check the attic under each oneLook for staining, new wood or wet insulation.
  4. Ask about the historyAsk the seller or prior owner for repair receipts and any insurance claims. Check permit records too.
Stay on the ground

You can learn almost everything from the ground and the attic. If you need a closer look, hire someone with fall protection.

3What to do about it

Do it yourself

  • Keep your patch map with your house records
  • Check those spots in the attic after heavy rain
  • Ask for repair history and receipts

Hire a pro

  • You see staining or wet wood under a patch
  • Patches cluster around flashing
  • You’re buying the house and want a written condition report

Color difference alone doesn’t need fixing. New shingles often weather closer to the old ones over time, though an exact match is rare.

4What drives the cost

Mapping and watching patches costs nothing. If a patch is leaking, the cost depends on whether it’s a shingle or a flashing problem, roof pitch and height, and any decking damage. See roofing cost.

5Questions

Should I worry about patches on a house I’m buying?

Ask about them. Patches are normal on older roofs, but they tell you where to look and what questions to ask.

Can the colors be matched?

Often not exactly, especially on older roofs. Discontinued colors are common.

Could a patch be hiding storm damage?

It could mark a past storm repair. See prior storm damage that was never claimed.

Written by Jaylan Jones. I Like To Exterior Services earns a referral fee when a call connects to a contractor. See our business-model disclosure.