Warren installed replacement windows for my house and both his workmanship and his product (Northstar Windows) were exemplary. He worked efficiently and with great pride. He has a great reputation in the area and we were not disappointed in choosing him for the job. He stands behind his work and is available for call back if there is any issue with the job (although I doubt there would be since he is so conscientious). Would highly recommend him for anyone looking for windows or doors.