Do Fishmouthed Asphalt Shingles Need Replacement?
If the shingles are not damaged, broken, cracked, or showing other signs of wear, it may be possible to leave these shingles on the roof longer than otherwise. That’s because this fishmouth pattern can show up earlier in shingle life on a wet building with poor under-roof venting. An experienced inspector or roofer can point out the extent of roof damage and other shingle wear signs that will decide if the roof is ready to be replaced.
