Can I install a 2nd layer of shingles on my roof?

Re-roofing (installing one layer of shingles over an existing ONE layer of shingles) is a financially advantageous option to a tear off if:
  • Your roof does not leak
  • You have 3-tab shingles; NOT architectural
  • Your shingles are lying flat to the roof; NOT warping or curling
  • Reroofing does NOT affect the life of the new shingles
  • Reroofing still carries GAF’s lifetime warranty
  • All new roofs have to go through a “Sealing Season” (to heat up the shingles) to be able to hold up to the maximum wind speed
  • GAF’s lifetime roofing system is the industry leader in performance!


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