Shilgles have been cracking off since installing. The severity of the problem and its coverup was best summarized by GAFs Vice President of Engineering Services, Mike Ferraro, who stated that no other problem was more extensive, had more involvement at the highest levels than the premature cracking of Timberline roofs. Who in Minnesota can I contact about this. The reinforcement of the shingles makes them hold up over time. You are limited to a total of three claims (regardless of whether the claims are approved or denied) and can only file one claim in any two-year period. GAF recommends getting at least 2 estimates. If you register for a warranty at the time of installation, then the company will be aware of you, but still will not notify you. , [gravityform id="805" title="false" description="false" ajax="true" field_values="l=US"],