My roof was recently damaged by wind and needed to be re-shingled. On the paper I received from the insurance company it specified 30-year comp shingles. When the bundles of shingles arrived it included 12 bundles of 25 year shingles. When I asked the contractor why the 25-year shingles he said that they were needed for the “starter row” which required a thinner shingle “so the rest of the shingles will lay right”. I have no experience with roofing and just wonder if anyone can tell me if this is right, or is the contractor taking advantage of my ignorance?
Thanks in advance for your help.