Doors & Windows with Spandrel Glass | Cost, Pros & Cons

September 20, 2024

Key Takeaways

Spandrel glass is used to conceal structural elements and provide a sleek, modern look to buildings.
It offers several advantages such as thermal insulation, privacy, and design flexibility.
The cost of spandrel glass varies depending on material and installation, typically ranging from $50 to $150 per square foot.
Spandrel glass can be customized with different colors and finishes to match architectural designs.
At Panda Windows & Doors, we offer a range of custom spandrel glass solutions for both residential and commercial projects.

Door & Window with Spandrel Glass

Spandrel glass is a type of opaque glass used to cover areas of a building’s facade where you don’t need transparency, such as between floors, to conceal structural elements, or between vision glass. Unlike regular annealed glass, spandrel glass is not meant to be seen through but rather to blend with the building’s exterior.

Spandrel glass and vision glass on a building.

Spandrel glass and vision glass are both used in building facades, but they serve different purposes. While vision glass is transparent and allows views through the building, spandrel glass is opaque and is used to conceal structural elements and building systems between floors, creating a uniform appearance on the exterior. In the image above, spandrel glass is the one that is fully opaque and gray in color while the rest is vision glass. (image courtesy of Willowbrook)

Types of Spandrel Glass

Spandrel glass typically comes in two types:

Monolithic Spandrel Glass: A single layer of glass that is painted or coated to achieve opacity.
Insulated Spandrel Glass: Comprises two layers of glass with an insulating material in between, offering better thermal performance.

An illustration showing the differences between monolithic and insulated spandrel glass.

The differences between monolithic and insulated spandrel glass. (image courtesy of Guardian Glass)

Characteristic	Monolithic Spandrel Glass	Insulated Spandrel Glass (IGU)
Glass Composition	Single pane of glass	Insulating glass unit (IGU) with two or more glass panes
Opacifier Application	Opacifier (e.g. silicone paint, ceramic frit) applied directly to the indoor surface of the glass	Opacifier applied to the #4 surface (innermost surface) of the IGU
Thermal Performance	Lower thermal insulation compared to IGU	Higher thermal insulation due to air/gas space between glass panes
Thermal Stress	More susceptible to thermal stress and breakage	Less susceptible to thermal stress and breakage
Color Matching	Harder to color match with vision glass	Easier to color match with vision glass
Cost	Generally lower cost	Generally higher cost
Recommended Heat Treatment	Heat-strengthened or tempered glass recommended	Heat-strengthened or tempered glass recommended, especially for interior lite
Applications	Commonly used in curtain wall systems, window walls, and other commercial building facades	Commonly used in curtain wall systems, window walls, and other commercial building facades where color matching is important

A table showing the differences between monolithic spandrel glass and insulated spandrel glass.

Applications of Spandrel Glass in Architecture

Spandrel glass is incredibly versatile and can be used in a variety of architectural applications:

Building Facades: It is often used to create a uniform and visually appealing exterior by hiding structural components, wiring, and HVAC systems.
Interior Partitions: Spandrel glass can be used to create sleek, opaque partitions within buildings, adding to the modern aesthetic.
Doors and Windows: When integrated into door and window systems, spandrel glass provides a seamless look while concealing unsightly elements.

How Spandrel Glass is Made

The production of spandrel glass involves several steps to ensure it meets both aesthetic and functional requirements:

Glass Selection: High-quality glass is chosen based on the project’s specifications.
Coating: The glass is coated with a ceramic frit or paint to achieve opacity. This coating can be applied in various colors to match the building’s design.
Tempering: The coated glass is then tempered to enhance its strength and durability. This process involves heating the glass to high temperatures and then rapidly cooling it.
Insulating: For insulated spandrel glass, an insulating material is sandwiched between two layers of glass to improve thermal performance.

Types of Spandrel Glass Finishes

Spandrel glass can be customized with different finishes to suit the architectural design:

Solid Colors: Available in a wide range of colors, solid finishes provide a consistent and uniform appearance.
Metallic Finishes: These finishes add a reflective quality to the glass, enhancing its visual appeal.
Patterned Finishes: Patterns can be applied to the glass to create unique and eye-catching designs.

Founded in 1991, Panda Windows & Doors specializes in state-of-the-art custom glass wall systems for both residential and commercial spaces through Panda Windows & Doors. Operating from our manufacturing facility in Las Vegas, Nevada, we have been at the forefront of innovation for over 30 years. Our extensive product lineup includes over 80 high-end offerings, such as pivot doors, French doors, folding doors, lift & slides, multi-slides, horizontal sliding walls, and operable windows. These systems are available in materials like aluminum, steel, stainless steel, bronze, solid wood, and aluminum-wood clad.

We are renowned for our award-winning designs, engineering solutions, and fast lead times, delivering in just 6-10 weeks to customers throughout the U.S. and Caribbean. Trusted by leading architectural firms and glaziers nationwide, we stand as the premier manufacturer of custom luxury windows and doors in the United States.

Explore Custom Solutions from Panda Windows & Doors Today

Cost of Door & Window with Spandrel Glass

Material Costs

The cost of monolithic spandrel glass itself typically ranges from $50 to $60 per square foot. This price can vary based on the type of finish and any customizations required. For example, metallic coatings and custom patterns can increase the cost.

Installation Costs

Besides the material costs, you’ll also need to factor in installation expenses. Professional installation usually adds another $5 to $10 per square foot. This cost covers labor, tools, and any additional materials needed for a secure and seamless installation.

Factors Affecting Total Cost

These factors can significantly influence the overall expense of your project:

Glass Type: The type of spandrel glass you choose, whether monolithic or insulated, will affect the cost. Insulated spandrel glass tends to be more expensive due to its additional thermal performance benefits.
Coating and Finish: The type of coating or finish applied to the glass can also impact the price. Custom colors, metallic finishes, and patterned designs typically cost more than standard options.
Size and Thickness: Larger and thicker glass panels are more expensive due to the increased material and manufacturing costs.
Installation Complexity: The complexity of the installation process, including the need for specialized labor or equipment, can add to the overall cost.
Location: The geographical location of your project can influence costs due to variations in labor rates and material availability.

Pros & Cons of Door & Window with Spandrel Glass

Advantages of Using Spandrel Glass

Conceals Unsightly Elements: Spandrel glass effectively hides structural components, wiring, and HVAC systems, providing a clean and uniform appearance.
Thermal Insulation: Insulated spandrel glass improves energy efficiency by reducing heat transfer, which can lead to lower energy bills.
Design Flexibility: Available in various colors, finishes, and patterns, spandrel glass can be customized to match any architectural style.
Durability: Tempered spandrel glass is strong and resistant to impact, making it a durable choice for both residential and commercial applications.

Disadvantages of Spandrel Glass

Higher Cost: Spandrel glass is generally more expensive than traditional glass, which can be a significant factor for budget-conscious projects.
Limited Transparency: Since spandrel glass is opaque, it cannot be used in areas where visibility is required.
Potential for Imperfections: Coating and manufacturing processes can sometimes result in minor imperfections, which may affect the glass’s appearance.

Choose Panda Windows & Doors for Custom Solutions

At Panda Windows & Doors, we pride ourselves on offering high-quality, custom spandrel glass solutions for both residential and commercial projects.

Our extensive experience and commitment to excellence make us the perfect partner for your next project.

Here’s why you should choose Panda Windows & Doors for your spandrel glass needs:

Custom Solutions: We offer tailored solutions to meet the unique requirements of your project, ensuring a perfect fit and seamless integration.
High-Quality Materials: We use only the finest materials and state-of-the-art manufacturing processes to produce durable and visually stunning spandrel glass systems.
Expertise and Experience: With over 30 years of experience in the industry, our team of experts is well-equipped to handle even the most complex projects.
Comprehensive Support: From design and engineering to installation and maintenance, we provide comprehensive support throughout the entire project lifecycle.

The Panda Process

1. Design: We help you select custom doors and windows from over 80 options including with spandrel glass. Tailor every detail to your needs and approve the sales order to confirm all specifications before we create detailed engineering plans.

2. Manufacturing: Our project manager ensures all components are ready, and CNC machines precisely cut and mill extrusions. Extrusions are cleaned and powder-coated for durability. Skilled technicians assemble your custom products, integrating gas-filled glass seamlessly.

3. Quality Control: Each product undergoes rigorous inspection and testing to ensure functionality and quality. We provide photos and videos of your completed products before packaging, ensuring they meet all standards.

4. Packaging & Shipping: Products are wrapped in protective materials and placed in custom-built crates for safe transit. We ensure your order arrives intact, whether shipping domestically or internationally.

5. Delivery & Warranty: Inspect your order upon arrival and register the product to activate the limited warranty. Apply a high-quality finish to wood surfaces within 7 days to prevent damage. Ensure proper installation and protection during construction.

6. Care & Maintenance: Follow our care and maintenance guide to keep your Panda products in top condition. Regular cleaning and maintenance ensure a lifetime of use and beauty, preserving the efficiency of spandrel glass and other features.

Frequently Asked Questions (FAQ)

What is the lifespan of spandrel glass in windows and doors?

Spandrel glass is designed to be durable and long-lasting. With proper installation and maintenance, it can last for several decades. The lifespan may vary depending on environmental factors and the specific type of spandrel glass used.

Can spandrel glass be used in residential buildings?

Yes, spandrel glass is not limited to commercial applications – it can also be used in residential buildings to create a sleek and modern look, conceal structural elements, and improve energy efficiency. Many homeowners choose spandrel glass for its aesthetic appeal and functional benefits.

What maintenance is required for spandrel glass?

Regular cleaning with a mild detergent and water will keep the spandrel glass looking its best. It’s also essential to inspect the glass periodically for any signs of damage or wear and address any issues promptly.

Regular Cleaning: Use a soft cloth and mild detergent to clean the glass surface.
Inspection: Check for any cracks, chips, or other damage that may compromise the integrity of the glass.
Professional Maintenance: Schedule periodic professional inspections to ensure the glass is in optimal condition.

Are there any safety concerns with using spandrel glass?

Spandrel glass is designed to be safe and durable. When tempered, it becomes even more resistant to impact and breakage. However, it’s essential to make sure that the glass is installed correctly and inspected regularly to maintain its safety features.

How does spandrel glass compare to other types of architectural glass?

Spandrel glass offers unique benefits compared to other types of architectural glass:

Opacity: Unlike vision glass, spandrel glass is opaque, making it ideal for concealing structural elements.
Design Flexibility: Available in various colors, finishes, and patterns, spandrel glass can be customized to match any design vision.
Thermal Insulation: Insulated spandrel glass provides better thermal performance compared to standard glass, improving energy efficiency.