Northern Performance Windows and Doors is a locally-owned and operated business that has been serving Simcoe County, Muskoka and surrounding areas since 1991. Our team is dedicated to keeping our customers happy by offering quality windows and doors at a fair price backed by our exceptional service. We pride ourselves on having highly qualified sales staff and installers who strive to give our customers a stress-free renovation project experience. Our manufacturers and product lines have been carefully handpicked to ensure our customers are getting the best quality, value, and service this industry has to offer.