Shingles can lift up due to a number of reasons, most commonly because of poor installation, strong winds catching the edges of the shingles, extreme weather conditions like heavy snow or rain, aging of the shingles, improper attic ventilation leading to excessive heat, or damage from previous storms, causing them to become loose and detach from the roof deck.
Key factors causing lifted shingles:
Wind damage:
High winds can create suction and lift the edges of shingles, especially if they are already poorly secured.
Poor installation:
Improper nailing or application of adhesive can lead to shingles lifting easily.
Weather extremes:
Heavy rain, snowstorms, and extreme temperature fluctuations can cause shingles to expand and contract, leading to lifting.
Attic ventilation issues:
Poor attic ventilation can trap heat and moisture, causing shingles to curl and lift.
Aging shingles:
Over time, the sealant on asphalt shingles can deteriorate, causing them to become loose and lift.
What to do if you notice lifted shingles:
Inspect your roof thoroughly:
Check for other signs of damage like granule loss, cracked shingles, or exposed underlayment.
Contact a professional roofer:
For significant shingle lifting, it's best to consult a roofing contractor to assess the damage and determine the best repair method.
Minor repairs (DIY):
For small areas of lifted shingles, you can attempt to re-secure them using roofing cement or specialized adhesive.
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