Certificatons

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Granite State Home Improvements is an Elite CertainTeed 5-Star Contractor. This special high-ranking ensures you that only the best and brightest contractors will be working on your property.

Granite State Home Improvements is certified through the Vinyl Siding Institute's Certified Installer Program. We’re also honored to have received an Award of Distinction for Historic Restoration from the Vinyl Siding Institute.

Granite State Home Improvements is recognized by CertainTeed as a ShingleMaster Company. This allows us to offer you SureStart PLUS extended warranty coverage when you have us install an Integrity Roof System on your home. 

Granite State Home Improvements is proud to be a Lead Safe Certified Firm, and as such has been trained in the latest lead safe renovation practices. 

WE’RE CERTIFIABLY GOOD AT WHAT WE DO