Cossins Windows Canada was founded in 1978 in Calgary, Alberta, Canada, and is 100% Canadian, family owned and operated for 3 generations. We manufacture UPVC vinyl, aluminum clad and traditional wood windows in both standard and custom sizes. Cossins Windows also offers a full line of exterior doors, patio doors & skylights. We have experienced installation experts that can install your new windows and doors, whether it is for new construction or a renovation project. From start to finish, quality, customer satisfaction and service is our top priority. Repeat business and word of mouth are our main advertising tools. Our windows are built specifically for your home and style, with attention to detail and quality. Call us today!