Why do manufacturer certifications matter?

Answers from the sources

  1. Modern Exterior Systems

    “Certifications unlock extended manufacturer warranty registration that uncertified contractors cannot offer. Example: CertainTeed Landmark Pro installed by a ShingleMaster carries SureStart Plus 50-year warranty; installed by an uncertified contractor carries the standard Landmark Pro warranty only. The product is identical; the warranty tier is different. We've written up what a CertainTeed ShingleMaster certification actually means in more detail.”

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Published
2026-10-23
Modified
2026-10-23
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revision Q138656710:content:f907ef9c634d2f45

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