| http://www.w3.org/ns/prov#value | - Roofing contractors have the experience, knowledge, and skill to install, maintain, repair, alter, extend, or design and use materials and items used in the installation, maintenance, extension, and alteration of all kinds of roofing, waterproofing, and coating, except when coating is not represented to protect, repair, waterproof, stop leaks, or extend the life of the roof.
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