Buckling

Buckling

Causes:

  • Improperly applied felt
  • Wrinkled underlayment
  • Roof deck movement
  • Spacers not used in between roof deck boards
  • Poor roof ventilation
  • New shingles applied over old, rough shingles

Buckling

Recommendation:

  • Add ventilation to the attic space. The minimum requirement is one square foot of Net-Free Vent Area per 150 square feet of attic floor space.
  • Allow moisture to escape the roofing system. This can be a slow process and could take until the following spring. Once the roofing system reaches the proper moisture content, the roof should lay flat and the buckling problem should not return.
  • Remove the shingles that are affected, cut the wrinkle in the felt and replace the shingles.
  • Consult the services of a professional. Make sure to apply shingles in accordance with the shingle manufacturer’s recommendations.

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