Founded in 1980, Great Northern Insulation is Ontario's leading building envelope service provider, for the new construction ... and retrofit markets across commercial, institutional, industrial, agricultural and residential sectors. Our vision is to build a better future by providing homeowners and builders with the products and services they need to help reduce their carbon footprint and build safer, more energy-efficient and sustainable communities. Headquartered in Woodstock, Ontario, Great Northern Insulation is trusted by some of Canada's largest and best-known construction companies and backed by Ironbridge Equity Partnership. To learn more, visit gni.ca. read more