Clearer views. Brighter spaces.
The fog you're seeing is the result of a failed seal inside your insulated glass unit — the double or triple-pane assembly that makes up the glass portion of your window. When the unit was manufactured, the space between the panes was filled with an inert gas, usually argon, and sealed airtight. That gas improves insulation and prevents moisture from entering.
Over time — accelerated by Charlotte's humidity, temperature swings, and direct sun exposure — that seal breaks down. The gas escapes. Humid outdoor air enters the space between the panes. When temperatures drop, that moisture condenses on the interior glass surfaces. The result is the hazy, foggy, or cloudy appearance that won't go away no matter how much you clean the glass.
It's not a cleaning problem. It's a glass unit failure.
The most obvious sign — a cloudy or hazy appearance that doesn't clear when you clean the glass surface.
The most obvious sign — a cloudy or hazy appearance that doesn't clear when you clean the glass surface.
Water droplets or streaks visible inside the glass unit, not on the interior or exterior surface.
Water droplets or streaks visible inside the glass unit, not on the interior or exterior surface.
White or grey streaks and blotches on the interior glass surfaces caused by repeated moisture condensing and evaporating.
White or grey streaks and blotches on the interior glass surfaces caused by repeated moisture condensing and evaporating.
Windows that feel notably colder in winter or allow more heat in summer — the argon fill is gone and the insulation value has dropped.
Windows that feel notably colder in winter or allow more heat in summer — the argon fill is gone and the insulation value has dropped.
Fogging that appears or worsens when outdoor temperatures drop, indicating the seal has failed and humidity is entering.
Fogging that appears or worsens when outdoor temperatures drop, indicating the seal has failed and humidity is entering.
In advanced cases, mineral buildup on the interior glass surfaces creates a distorted appearance when looking through the window.
In advanced cases, mineral buildup on the interior glass surfaces creates a distorted appearance when looking through the window.
Replace the failed glass unit while keeping your existing frame.
When the sash is in good condition, we remove the failed glass unit and install a new insulated glass unit into the existing sash. This is the most cost-effective option and is often available for windows under manufacturer warranty. The window frame stays in place — only the glass changes.
Replace the entire sash when it is damaged or structurally compromised.
When the sash itself is damaged — warped, rotted, cracked, or structurally compromised — we replace the entire sash assembly with a new one. We source OEM sashes for all 12 manufacturers we're authorized to service, which means the replacement matches the original specifications exactly.
Common in older Charlotte homes, sunrooms, and outbuildings. We cut and replace single-pane glass in a wide range of sizes and thicknesses.
The most common configuration in Charlotte residential windows built after the 1980s. Standard IGU replacement with argon fill and low-E coating options.
Increasingly common in higher-end new construction. We source and install triple-pane units to the original specifications.
Genuine parts. Authorized warranty service.
KKC Glass is an authorized contract service provider for 12 major window manufacturers. If your windows are still under the original manufacturer warranty, we can handle the claim process and replacement directly — with genuine OEM glass units, not third-party substitutes. This is a meaningful distinction. As an authorized provider, we use the correct components for each brand — which matters for both the warranty and the long-term performance.
We assess the window — glass condition, sash condition, frame integrity — and recommend glass-only replacement, sash replacement, or in rare cases, full window replacement.
We assess the window — glass condition, sash condition, frame integrity — and recommend glass-only replacement, sash replacement, or in rare cases, full window replacement. Estimate requests based on the details you provide for straightforward situations.
We assess the window — glass condition, sash condition, frame integrity — and recommend glass-only replacement, sash replacement, or in rare cases, full window replacement. Estimate requests based on the details you provide for straightforward situations.
Precise measurement of the existing glass unit to ensure the replacement matches exactly — dimensions, thickness, coating, spacer type.
Precise measurement of the existing glass unit to ensure the replacement matches exactly — dimensions, thickness, coating, spacer type.
Precise measurement of the existing glass unit to ensure the replacement matches exactly — dimensions, thickness, coating, spacer type.
We order the replacement IGU from the appropriate source.
We order the replacement IGU from the appropriate source. For warranty work, this means the manufacturer's authorized parts channel.
We order the replacement IGU from the appropriate source. For warranty work, this means the manufacturer's authorized parts channel.
The failed glass unit is removed and the new one is installed and sealed.
The failed glass unit is removed and the new one is installed and sealed. Most installations are completed in a single visit on the day the glass arrives.
The failed glass unit is removed and the new one is installed and sealed. Most installations are completed in a single visit on the day the glass arrives.
We verify the new unit is properly seated and sealed before we leave.
We verify the new unit is properly seated and sealed before we leave. KKC Glass backs the installation with a one-year workmanship warranty.
We verify the new unit is properly seated and sealed before we leave. KKC Glass backs the installation with a one-year workmanship warranty.