Your Professional Partner for Insulated Glass Unit (IGU):
Glazing Window Units
At Fab Glass, we understand the intricate needs of professionals like engineers, architects, contractors, and interior designers. You require solutions that balance aesthetics, performance, and budget—all delivered on time. We offer a wide range of customizable Insulated Glass Units (IGUs), including those with Super Spacer Technology engineered to excel in residential, commercial, and retail applications, as well as Reactive Hot Melt (RHM) designed specifically for residential use. Keep reading to understand how these technologies are the best option for you, or just request a quote!
What Makes Insulated Units Essential?
These transform spaces into energy-efficient, quiet, and comfortable environments. Insulated Glass Units (IGUs)—advanced multi-pane glass solutions—are the foundation of modern architecture, offering:
Energy Savings by reducing heat transfer with Low-E Glass Coatings and argon gas fills.
Noise Reduction for serene interiors, backed by high Sound Transmission Class (STC) ratings.
Condensation Prevention for long-lasting clarity and moisture-free windows.
Designed to meet the highest industry standards, our IGUs empower you to create spaces that blend stunning aesthetics with superior functionality. Choose Fab Glass for reliable and innovative IGU solutions.
Did You Know?
- Foam-based Super Spacer Technology is 50% more energy-efficient than traditional metal spacers.
- Triple-glazed IGUs significantly reduce energy consumption, cutting heating and cooling costs.
- Our IGUs undergo the P-1 Chamber Test, simulating extreme conditions to ensure durability you can trust.
- Warm Edge Technology in our spacers keeps glass edges up to 18°F warmer, reducing heat loss.
Why Our Super Spacer IGUs Lead the Market
Spacers are the unsung heroes of Insulated Glass Units (IGUs), ensuring structural integrity and optimal thermal performance. Unlike traditional spacer materials, Super Spacers offer superior insulation, condensation resistance, and durability—making them the preferred choice in high-performance IGUs.
Aluminum Spacers
Durable and widely used, but their high thermal conductivity leads to energy loss and increased condensation buildup. This makes them less effective in energy-efficient applications.
Stainless Steel Spacers
Offer better insulation than aluminum and provide improved strength, but they still conduct some heat, which can reduce the overall energy efficiency of the IGU.
Foam/Composite Material Spacers
These spacers provide excellent thermal shielding, significantly reducing heat transfer. Their flexibility also minimizes stress on the glass, preventing seal failures and reducing condensation risks.
Get a custom quote tailored to your project’s needs!
4 Key Advantages of Super Spacer Technology
Thermal Performance You Can Rely On
Warm Edge Technology minimizes heat loss, enhancing energy efficiency. The Argon Gas Fill between panes further reduces thermal transfer and improves soundproofing for better comfort.
No More Condensation
It stops moisture buildup that can lead to mold, allergens, and interior damage. High-performance sealants, including Reactive Hot Melt (RHM), enhance longevity for lasting protection.
Unmatched Durability
The foam spacer adapts to temperature changes, preventing cracks or seal failure. With proven strength, it passed the P-1 Chamber Test, simulating extreme weather conditions.
Noise Reduction
Whether on a busy street or in a bustling commercial zone, our IGUs effectively reduce noise, creating a quieter environment with enhanced acoustic protection.
Traditional IGUs vs Fab Glass IGUs
When compared to traditional IGUs, our triple-glazed units with Super Spacer Technology and RHM outperform in thermal efficiency, durability, and condensation control.
| Feature | Traditional IGUs | Fab Glass IGUs |
|---|---|---|
| Thermal Efficiency | Moderate | Superior |
| Noise Reduction | Low | Excellent |
| Condensation Control | Minimal | High |
| Durability | Moderate | Outstanding |
Why Reactive Hot Melt (RHM) is the Best Sealant for Residential IGUs
When it comes to residential spaces, Reactive Hot Melt (RHM) changes the game. Here’s why we use this advanced sealant:
Stronger Moisture Resistance
Effectively blocks water infiltration and prevents leaks, reducing the risk of mold and damage. This ensures long-term durability and performance.
Built to Last
Designed to withstand thermal expansion and contraction, it maintains its strength over time, preventing cracks and seal failure for lasting reliability.
Lightweight Advantage
Enhances structural flexibility, making installation easier while ensuring excellent durability and performance without added weight.
Insulated Glass Unit
Glass Types Available
| Glass Type | InboardLite |
| Clear | Clear&Low-E |
| Tints | Clear&Low-E |
| Low-E | Clear |
| Spectrally Selective Tints | Clear&Low-E |
| Patterned | Clear&Low-E |
| Reflective#1or#2 | Clear&Low-E |
Other sinclude: Laminated Glass,Spandrel Glass, Silk-Screened Glassand OtherDecorativeGlass.
Lightweight Advantage
These offer a lightweight advantage, enhancing structural flexibility without compromising performance. By using advanced Super Spacer Technology and precise design, Fab Glass delivers IGUs that reduce overall building loads while maintaining superior insulation and durability.
Longer Lifespan
Energy-efficient glass typically lasts 20 to 25 years or more, depending on their quality and production standards. Their longer lifespan is due to high-performance sealants like Reactive Hot Melt (RHM) combined with Super Spacer Technology, which enhances moisture resistance, flexibility, and durability. RHM’s fast-curing properties protect against air and moisture penetration, reducing fogging and seal failure. By adapting to temperature fluctuations and relieving edge stress, it ensures the IGU remains structurally sound, delivering long-lasting thermal and energy-efficient performance.
Consider Fab Glass for Wholesale Insulated Glass
Discover the reasons why over 2,000 Pro Partners choose us for wholesale glass purchases. Learn what sets us apart and how we help businesses succeed:
Price Match
Guarantee
Bulk Discounts on Wholesale Orders
Best Quality Assurance
Net30 Payment
Terms
Order Tracking and Updates
Dedicated Wholesale Support Team
Catering to a Variety of Clients
At Fab Glass, we specialize in providing high-quality Insulated Glass Units (IGUs) while fostering long-term partnerships across industries. Our wholesale IGUs are designed to meet the needs of various clients, ensuring superior performance in energy efficiency, noise reduction, and durability.
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Interior Designers
Interior designers rely on our IGUs to enhance residential and commercial spaces with modern aesthetics and superior insulation. Our energy-efficient glass solutions contribute to both style and functionality, creating comfortable and visually appealing interiors.
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Wholesalers and Distributors
Wholesalers, distributors, and suppliers benefit from our competitive bulk pricing and reliable supply chain. With Fab Glass, you get high-quality IGUs that offer cost savings and a strategic advantage in the market.
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Contractors and Builders
Contractors and builders trust Fab Glass to provide durable, energy-efficient insulated glass for construction and renovation projects. Our IGUs improve thermal performance, reduce noise, and enhance building efficiency, making installations seamless and long-lasting.
Ready to Speak with Our Thermal Glass Unit Specialists?
How to Request a Quote for Insulated Glass Unit Specialists?
Choose Fab Glass for wholesale glass solutions you can trust!
Register for Pro Partner
Get On Board
Place Your Wholesale Order
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Got Questions?
We've the Answers!
Commonly Asked Questions
Find the answer to all your queries at a glance.
Need Expert Opinion?
Contact Us Anytime!
An IGU consists of two panes of glass separated by a spacer, often filled with gas like non-reactive gas or krypton. The thickness of the glass panes and low-e glazing minimize heat transfer and energy loss.
IGUs consist of dual-pane glass with low-e coating that reflect heat while reducing solar gain. The glass panes are separated by a gas-filled space, usually argon or krypton, enhancing soundproofing.
Laminated glass panes offer shatter resistance and soundproofing benefits. When combined with dual-pane glass low-e coatings, gas-filled layers, and proper thickness, they improve energy efficiency and safety.
Insulated glass offers various types like Clear/Clear, Tint/Clear, and Low-E/Clear, with shapes including square, round, arch, and custom designs. It comes in thickness options such as 1/2″, 3/4″, and 1″, with strength choices between annealed and tempered glass. Available colors include clear, bronze, grey, green, and blue, while spacers come in aluminum, bronze, and black for enhanced durability and performance.
Unlike single pane glass, double pane windows feature two glass window panes separated by an air or gas fill. This design enhances soundproofing, reduces noise, and helps maintain indoor temperatures in residential and commercial spaces.
IG units may include tempered glass, laminated glass, or thicker glass for extra durability. Low-e glass coatings, combined with gas-filled window frames, create a thermal barrier that minimizes heat loss and maximizes efficiency.
Double pane windows filled with inert gases like argon prevent thermal glass fogging by keeping moisture out. The sealed layers of glass and desiccants within the window frame absorb moisture, preserving visibility and efficiency.
The glass thickness and the use of laminated or tempered glass contribute to durability and soundproofing. In double-glazed windows, thicker glass and gas fills improve thermal performance, making them ideal for windows facing harsh conditions.
The price for replacing a double-pane window depends on the model, type of glass, and insulation you select. On average, the cost ranges between $450 and $600 per unit.
Thermal glass units typically have a lifespan of 20 to 25 years or more. However, their longevity is largely influenced by the quality of the materials and manufacturing standards.
The glass used in insulated glass units can either be tempered or annealed, depending on the user’s preference and project requirements.
Yes, insulated glass, especially double-pane units, can significantly reduce noise. The inert gas interlayer between the panes helps block sound, creating a quieter and more peaceful environment.
What our clients say about us!






Seamless Process
“I've been a contractor for over 30 years and obviously ordering glass online was not a normal approach for my business. The entire process went seamlessly, the panel was shipped ahead of schedule and flawless. Thanks, GW, lower Alabama”... view more






“I have used fab glass and mirror for multiple projects. It is so easy to order online and the customer service is impeccable, which seems to be a quality that is disappearing.”






Atrium
“Thanks to your company, I was able to complete my project from start to finish on my own. I needed 10 pieces of glass appx 51"x 13" with several variables. Each piece had to be 1/8" shorter than the next piece due to variances in the distance between the floor and ceiling. It was done in all redwood and it came out beautiful. You cut each piece amazingly accurately!”... view more



