Windows, Doors and Siding

Welcome to Great Northern Home Exteriors Inc. We are experts in replacement windows, entry doors and vinyl siding. Our company is based in St. Catharines and the Niagara region. We specialize in full frame windows and retrofit replacement windows with a variety of colors and designs. We offer numerous options of entry door systems including fiberglass and steel doors, garden doors, patio doors and even interior doors. Our company is the best choice for installing new vinyl siding, whether its vinyl board and batten or horizontal siding, we will help you choose from many colors and designs for