Masonry & Glass Systems Inc is your best source for beautiful, high-quality replacement windows, exterior doors, glass block windows, and glass block showers in the Saint Louis, MO area. Our goal with every project is complete customer satisfaction. We provide attentive service, professional design guidance, and expert installation. In addition, we only carry products that meet our strict standards for quality, performance, beauty, and efficiency. We partner with top brands including Soft-Lite Windows, Sunrise Windows, and Pro Via Doors. Our company was founded in 1980, and quickly became an industry leader in distributing and fabricating glass block products. We opened our first location in Saint Louis, MO, and have since grown with additional locations in Houston, TX and San Antonio, TX. In 1993 we expanded our services and products to include window and door replacement. We are also a distributor for the mold-proof and leakproof Wedi Shower System. In addition, our services include basement security windows, glass floors and gutter protection. If you are building a new home or looking to renovate, having new windows installed is a great way to add immediate value, enhance the look and comfort of your home, and improve energy efficiency. Masonry & Glass Systems Inc carries vinyl windows, fiberglass windows, and security windows in a large variety of styles, colors, and glass options. Our experienced team can help you find the replacement windows that best meet your needs and budget. You can trust our craftsmen to provide superior installation for your new windows in a timely and thorough manner. We would love to help with your replacement door project. Whether you are looking for entry doors, patio doors, French doors, or storm doors, we are sure to have the products you are looking for. The doors we carry are energy star qualified and manufactured with top-of-the line materials. Our door brands combine all the features you desire most including beauty, durability, function, and security. If you are looking for basement or bathroom windows that will brighten the room with natural light while providing privacy and style, Masonry & Glass Systems Inc can help you select the perfect glass block windows. Our glass block windows are maintenance-free and installed for optimal energy efficiency. Our team can also supply and install beautiful glass block showers, bars and partitions. Masonry & Glass Systems Inc is a member of NAHB (National Association of Home Builders). We are also accredited with the Better Business Bureau (BBB), and our BBB rating is A+. In recognition of our high customer satisfaction, we are a multi-year winner of the Angies List Super Service Award. Call us today at (314) 535-6515 for your window, door, or glass block needs.