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Looking for a way to make your home or office more comfortable while saving on energy bills? Insulated glass units (IGUs) are the perfect solution! Designed to keep warm air in during winter and prevent heat loss in the summer, these high-performance insulated panels help reduce heating and cooling costs while enhancing your home's style and value. Whether you're updating windows, patio doors, skylights, or sunrooms, our advanced energy-saving glass keeps your home draft-free, quiet, and free of foggy windows. Plus, with UV-blocking technology, you can protect your furniture from fading while letting in natural light.
✔ Energy-Efficient | ✔ Noise-Reducing | ✔ Custom-Cut to Fit | ✔ Free ShippingAt Fab Glass and Mirror, we make it easy for homeowners, renovators, and DIYers to find the perfect custom insulated glass panels for their space. As the largest ready-to-ship glass supplier in the USA, we ensure fast delivery through our network of 24+ fabricators, along with free shipping and a price match guarantee. Upgrade your home today with stylish, energy-efficient insulated glass and enjoy a more comfortable, cost-saving living space!
Read the table below to learn about the specifications of insulated glass replacement panels, including glass types, thickness of the glass, coatings, and more. Check out Fab Glass and Mirror E-Catalog of Insulated Glass Units.
| Types | Clear/Clear, Tint/Clear, Low-E/Clear, Frosted/Clear |
| Additional Options | Triple-Glazed IGUs, Soundproof Insulated Glass, Gas-Filled Panels (Argon or Krypton), Oversized Panels, Advanced Coatings (Low-E, Solar Control, Anti-Reflective, Frosted) |
| Outside Glass Type | Clear Glass, Tint (Bronze, Grey, Green, Super Grey, Mirrorpane, Blue), Low E (Pilkington), Frosted (Acid Etch) |
| Inside Glass Type | Clear Glass, Tint (Bronze, Grey, Green, Super Grey, Mirrorpane, Blue), Low E (Pilkington), Frosted (Acid Etch) |
| Shapes | Square, Round, Triangle, Arch, Octagon, Semi-Circle, Oval, Race Track Oval, Custom Shapes (Templates or Sketches) |
| Thickness with Spacer | 7/16" , 1/2." , 9/16" , 11/16" , 5/8" , 3/4" , 13/16" , 7/8" , 15/16" , 13/16" , 1" , 1 1/8" , 1 1/6" , 1 1/4 |
| Single Glass Thickness | 1/8" , 5/32" , 3/16" , 1/4 " |
| Colors | Clear, Bronze, Grey, Green, Super Grey, Blue |
| Spacer Materials | Aluminum, Bronze, Black, Super Spacer Grey, Black Super Spacer |
| Strength | Annealed (Standard) Glass, Tempered Glass |
Designed for Retailers, Contractors, Designers & Glass Businesses
Let's give you some insights into what insulated glass units (IGUs) are, their key components, and the benefits of investing in them to help you make an informed decision.
An insulated glass unit (IGU) is a window or door consisting of two or more glass panes with a space filled with air or gas in between. These units are commonly referred to as double-glazed or triple-glazed glass.
Insulated glass is made of:
These are the main layers. These can be either annealed or tempered, depending on the application and safety requirements.
A special gas like krypton or a mixture of argon fills the gap, acting like an extra barrier against heat and noise.
Keeps everything in place and prevents moisture from getting inside. Our Reactive Hot Melt (RHM) sealant ensures superior moisture resistance and flexibility.
Insulated Glass Units come in 7/16" , 1/2" , 9/16" , 11/16" , 5/8" , 3/4" , 13/16" , 7/8" , 15/16" , 13/16" , 1" , 1 1/8" , 1 1/6" , 1 1/4" —just a heads-up, seamed edge is the only option!
Here are four key advantages of thermal pane glass panels:
Its thermal conductivity is 27 times better than standard glass, providing unmatched thermal performance and energy efficiency.
Enjoy fog-free, condensation-free results with insulated glass, ensuring clear visibility and enhanced insulation.
Noise insulation ranges between 27-50 decibels, reducing traffic noise from 89dB outside to 50dB inside, making it one of the most effective acoustic glass solutions available.
The lightweight construction of insulated glass reduces the structural load, making it an ideal choice for modern buildings.
IGUs minimize heat convection by using insulating gases and tight seals, reducing energy loss and improving thermal efficiency.
Fab Glass and Mirror insulated glass units (IGUs) are designed for long-lasting performance, with a lifespan of 20 to 25 years or more, depending on quality and manufacturing standards. We use high-performance sealants like Reactive Hot Melt (RHM) and Super Spacer Technology to enhance moisture resistance, flexibility, and durability. RHM’s fast-curing properties create a tight seal that prevents air and moisture infiltration, reducing fogging and seal failure over time. Combined with Super Spacer Technology, which adapts to temperature changes and relieves edge stress, our IGUs maintain exceptional energy efficiency, thermal insulation, and structural integrity for years to come.
Ever felt your home turn into an oven in summer and a freezer in winter? That’s because standard glass has zero thermal resistance, allowing heat transfer to wreak havoc on your comfort—and your energy bills. Enter insulated glass, the silent guardian of efficiency and savings. This isn’t just glass; it’s a multi-layered thermal barrier. The secret? Two or more glass panes, a spacer system, and a sealed air space that minimizes heat loss. Inside, a desiccant absorbs moisture, preventing fogging. But the real MVP? The sealant system—a combination of primary and secondary seals ensuring airtight insulation and long-term durability. Without this defense, conduction, convection, and radiation all work against you. Your HVAC overcompensates, and your wallet suffers. The solution? Insulated glass with advanced sealing technology. Upgrade now—before another dollar slips through the cracks!
Maximum clarity, full natural light.
Ultra-clear, enhances light transmission, color purity.
Diffused light, stylish privacy solution.
Warm tone, reduces glare, heat.
Neutral tint, minimizes sun glare.
Soft green, lowers heat absorption.
Cool tone, reduces brightness, heat.
Darkest tint, blocks heat, glare.
Reflective finish, enhances privacy appeal.
Reflects heat, boosts energy efficiency.
Insulating glass is used for windows, doors, skylights, and facades, providing energy efficiency and noise reduction for residential and commercial setups. They are also ideal for commercial buildings, offices, and residential homes.
Keeps your home cozy and energy-efficient. Unlike single-pane glass, custom double pane window replacement with Low-E coatings or argon gas or insulating gas-filled panels offer superior performance.
Perfect for patios or entryways to block drafts and noise. These DIY-friendly options for the replacement insulated glass panels are easy to install and effective for thermal insulation.
Great for letting in light while keeping the weather out. Heat-reflective insulated glass panels add security, safety, and sleek aesthetics.
Adds a sleek look while protecting and insulating the space. Oversized insulated glass panels and Low-E IGUs ensure energy efficiency and security.
Unlike traditional glass, double paned Insulated Glass units can be made of tempered glass or annealed glass, providing exceptional strength, safety, and durability. It withstands impacts and, if broken, shatters into small, harmless pieces. Custom insulated glass units with Low-E coatings and triple glazing improve energy efficiency, noise reduction, and condensation control. Trusted by engineers, architects, interior designer, and contractors, Fab Glass and Mirror offers high-performance replacement insulating glass panels online and wholesale insulated glass units designed for long-term savings and enhanced comfort.
Commonly Asked
Questions. Find the answer to all your queries at a glance.
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To remove insulated glass panels, start by carefully cutting through the old sealant or caulking around the edges with a utility knife. Once loosened, use a putty knife or chisel to gently lift the glass unit out of the frame, ensuring careful handling to prevent damage.
Find high-quality insulated glass panels at Fab Glass and Mirror, available in custom sizes, shapes, and specifications to suit your needs. Enjoy competitive prices, fast shipping, and exceptional customer service when you shop online.
The best insulating glass depends on what you need. Low-E coated glass, gas-filled panels, or triple-pane glass work great for better energy savings and noise reduction.
Yes, insulated glass is definitely worth it. It helps lower energy bills, keeps your home more comfortable, and lasts longer, making it a smart and valuable investment.
Pricing depends on size and extras like coatings or thickness. Basic glass panels start at $10 per square foot, while double-pane windows cost $450–$600 with installation.
Yes, you can replace the glass, but you’ll need to replace the entire Insulated Glass Unit (IGU). This ensures the seal stays intact and maintains the window’s insulating properties.
No, they’re not the same. Insulated glass is made with two or three panes of glass to improve energy efficiency. Tempered glass, conversely, is a tough safety glass often used in insulating glass panel for added strength and durability.
Insulated glass usually lasts 20 to 25 years, depending on the quality of the materials and how well it was made.
The thickness of insulated glass typically ranges from 1/2 inch to 1 1/2 inches, depending on its use. Standard sizes are designed to suit various applications, offering durability and energy efficiency.
Cut-to-size insulated glass is glass made to fit your exact size needs, perfect for custom windows, doors, and unique designs.
Yes, double pane glass is insulated glass with two layers of glass and a gas-filled space in between to save energy and keep your home comfortable.
The R-value of insulated glass tells how good it is at keeping your home insulated. A higher R-value means better comfort and energy savings. Most insulated glass does a great job at keeping your home cozy all year.
Insulated glass is filled with gases like argon or krypton to improve energy efficiency by reducing heat loss and keeping indoor temperatures stable.
To check if your window has insulated glass, hold a flame close to the glass surface. If you see multiple reflections of the flame, it means the window has multiple panes, confirming it's an insulated glass unit. Check our complete range of custom glass online.
Triple-pane windows provide excellent insulation and durability, but they are not hurricane-proof. To protect against hurricanes, choose windows specifically designed and rated for high-impact resistance.
For the best temperature control, choose Low-E coated, gas-filled triple-pane windows. They keep your home cool in the summer by blocking heat and warm in the winter by holding in warmth.
An Insulated Glass Unit (IGU) has two or more glass panes sealed with a gap in between filled with gas. It keeps homes quieter and better insulated from heat or cold.
