Kingston Windows & Doors offers energy efficient home improvements such as entry doors, sliding patio doors, window treatments and more. Serving Kingston for over 18 years, we offer cash-and-carry, wholesale and installation. Siding, wood flooring and door hardware is also available. Visit our 3500 square foot showroom on Gardiners Road to choose the replacement windows and doors that are perfect for your home. Our professionals offer free estimates and a 30-day guarantee price guarantee.