I have been in the business for 20 years. I have made a business of fixing others' mistakes. Far too often, shingles are installed during improper conditions, preventing them from sealing. Temperature and high winds are often to blame, and the homeowners are oblivious. Too many companies ignore sensibility for the dollars and would not want their crews waiting for ideal conditions. I have watched immigrant crews work in the rain, snow and high winds, which is ludicrous, but unfortunately all too common. I have not had a problem with any brand of shingle that was not covered by the manufacturer.
Owens, IKO, Certainteed, Atlas, all have replaced roofs for my clients because the roofs were properly vented and installed. I am of the belief that many of these claims have circumstances that created the problems. If a hailstorm beats the shingle but does not destroy it, the shingle has been compromised. It may not be immediate but the granule loss and loosening caused will allow the shingle to weather poorly, and fail much sooner than those that did not suffer the weather. I have seen hundreds of problems. Most are due to improper venting and weather. All this said, there are claims that your manufacturer will honor with simple documentation and the cooperation of your contractor.

