Masonry & Glass Systems Inc. has been serving St. Louis homeowners since 1980 with expert craftsmanship and innovative solutions. From our roots as one of the nation’s leading glass block distributors to expanding into St. Louis, MO replacement windows and doors in 1993, we’ve built a reputation for quality products, certified installation, and customer-first service.
We proudly install premium brands such as Restorations by Sunrise and ProVia Doors, delivering lasting comfort, energy efficiency, and beauty to homes throughout the St. Louis area. Whether you’re upgrading today or planning for the future, our team is here to help every step of the way.
Trusted by St. Louis Homeowners
for Over 40 Years
For more than four decades, St. Louis families have trusted us with their most important home upgrades. Backed by industry-leading warranties, Energy Star certifications, and award-winning service, we ensure every project is handled with professionalism and care.
Explore Our Window Styles Offered to St. Louis, MO Residents
Our high-performance vinyl replacement windows are designed for beauty, durability, and efficiency. Perfect for both modern and historic St. Louis homes:
- Double Hung Windows – Classic design, easy to clean, excellent ventilation.
- Casement Windows – Energy-efficient with full-sash openings.
- Sliding Windows – Smooth operation and wide outdoor views.
- Bay & Bow Windows – Expansive natural light and architectural interest.
- Garden Windows – A unique way to bring the outdoors inside.
- Historic Windows – Preservation-friendly upgrades with tax credit potential.
- Storm Windows – Cost-effective efficiency and weather protection.
- Paintable & Stainable Windows – Fully customizable to match your home’s design.
St. Louis, MO Replacement Doors
We offer a complete range of energy-efficient doors that combine style, security, and long-lasting performance. Each option is installed by certified professionals to ensure perfect fit and functionality.
- Entry Doors – Create a bold first impression with secure and stylish fiberglass or steel entry doors, available in a variety of finishes and designs.
- French Patio Doors – Elegant and timeless, these double-door designs maximize natural light and enhance indoor-outdoor flow.
- Art Glass Doors – Add personality and character with custom art glass designs that blend craftsmanship and performance.
- Storm Doors – Increase protection and ventilation with durable storm doors designed for seasonal comfort.
- Patio Doors – Smooth-sliding patio doors that offer expansive views and energy efficiency without sacrificing security.
Whether you’re upgrading for curb appeal, improved efficiency, or added home security, our door solutions are designed to elevate your St. Louis home inside and out.
Masonry & Glass Systems, Inc.
Simple 4-Step Installation Process
Consultation
We listen to your needs and provide expert recommendations.
Custom Measurements & Ordering
Every product is tailored precisely for your home.
Professional Installation
Installed by certified experts with precision and care.
Post-Install Support
We inspect, service, and stand behind our work.
Rated 5 Stars by Your Neighbors in St. Louis, MO
When it came time to replace the 83-year-old windows in her beloved brownstone, one St. Louis homeowner didn’t want “boring” or “cheap looking” options, she wanted quality, color, and a team that truly cared.
“It took me weeks to find a company with the colors and ratings by consumers along with the BBB… Masonry and Glass were number one in all these classes.” From the moment our representative showed her “Mahogany, Dark Brown, White and fabulous window ratings,” she knew she’d found the right fit.
Replacing 27 windows is no small order, but our team, Brian, Elijah, Spencer, and Robert, handled it with “zero pressure,” complete professionalism, and a warm, respectful touch. “They started in the rooms I requested and were warm along with welcoming every day.”
The results? “The windows look so fabulous and make such a difference in the look along with the character of my brownstone.” Even better, she’s already noticing “how the inside is staying so much cooler during heat without any air conditioning.”
This replacement window review from St. Louis, MO reminds us why we do what we do: to help homeowners turn a vision into a reality, with craftsmanship, comfort, and care.
Windows and Doors FAQs
Can you match my new door with my home’s existing design?
Yes! We specialize in creating doors that seamlessly blend with your home’s existing design, whether it’s traditional, modern, or contemporary. Our team offers a wide range of finishes, colors, and hardware options to ensure your new door complements your home’s architectural style. To help you visualize the perfect match, we provide sample works from past projects, showcasing various design possibilities and customizations. Contact us to explore options and find the ideal door that enhances your home’s aesthetic.
What are the benefits of installing a garden window?
Garden windows offer numerous benefits, including enhanced natural light, improved ventilation, and added space for decorative plants or small herb gardens. These windows extend outward, creating a mini-greenhouse effect that helps plants thrive while also brightening up your interior. Additionally, garden windows improve energy efficiency by allowing passive solar heating during colder months and enhancing airflow when equipped with operable side vents. Their unique design adds aesthetic appeal and increases home value, making garden windows a stylish and functional upgrade for any space.
Are sliding windows energy efficient?
Yes, sliding windows can be highly energy efficient when designed with modern features such as insulated glass, weatherstripping, and multi-chambered frames. These elements help reduce heat transfer, keeping indoor temperatures stable and lowering energy costs. Additionally, sliding windows provide a tight seal when closed, minimizing drafts and improving overall insulation. Choosing energy-efficient glass options, such as Low-E coatings and argon gas-filled panes, can further enhance the performance of sliding windows, making them a great choice for homeowners looking to improve comfort and reduce energy consumption.
Schedule Your Free, No-Obligation Estimate Today
Ready to transform your home? Let Masonry & Glass Systems Inc. help you enhance comfort, efficiency, and beauty with trusted St. Louis, MO replacement windows and doors.