Dawson Windows & Doors is one of South Carolina's most trusted and experienced providers specializing in high-quality, energy-efficient new construction and replacement windows and doors. Transform Your Home With New Windows & Doors. Our mission is to supply and expertly install the most efficient, durable, and attractive window and door products in our customer's homes in a stress free, and thorough manner at our below competitive market rates. Dawson Windows & Doors of Myrtle Beach provides decades of experience in every area of window and door installation and repair. We're a locally owned, Myrtle Beach-based company known for our first-rate, energy-efficient custom windows and doors, affordable prices and professionally-trained window and door installers who use best practices and respect your home.