GNI took care of arranging the energy audit beforehand so we could get a rebate on the work. The installers were quick, polite, and cleaned up after themselves! Professional, friendly, explained things, did a great job, and left my home as clean as it was when they came in! At GNI, we service your project with the most experienced staff in the industry
Linda Dench —
Positive: Professionalism, Quality, Value
Tiffany &Sabrina were very efficient and very professional in the insulation
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Construction services in Gravenhurst, ON