Since 1980, GNI has helped its clients to improve energy efficiency, durability, and comfort levels of their homes and buildings throughout Ontario. With the most experienced staff in the industry, we provide affordable and high-quality solutions for all your insulation needs! Read more

Your local certified roofer for the Kitchener, Waterloo and Cambridge Ontario Area. W.S.I.B Insured BP Certified Our attention to detail means your home will be water tight for years to come. We use only BP of Canada roofing shingles on our roof replacement jobs. The BP shingle has been drastically improved with weather tight technology. This new shingle will prevent extreme weather elements from penetrating you home. All our in-house employees are trained to ensure you get full ice and... Read more