Sealed Unit & Foggy Window Calgary
“Tired of poor service? Give us a try!”
Around the Clock Glass replaces failed sealed units (insulated glass units, or IGUs) in Calgary homes and commercial buildings. A foggy window — condensation trapped between double-pane or triple-pane glass — means the perimeter seal has failed and the insulating gas has escaped. The glass is no longer providing proper insulation, and no amount of cleaning will fix the fog. The solution is replacing the sealed unit itself, not the entire window.
What Causes Foggy Windows in Calgary
Foggy windows are usually caused by a failed sealed unit. When the seal between the panes breaks down, moisture can enter the insulated glass unit and create condensation, cloudiness, or a foggy appearance between the glass. Around the Clock Glass can assess the window and replace the failed sealed unit to restore a clearer view without replacing the entire window frame when possible.
How Sealed Unit Replacement Works
Sealed unit replacement is a glass-only repair — your existing window frame stays in place. We measure the exact dimensions, fabricate a replacement IGU to those specifications, then a glazier removes the window stops, extracts the failed unit, and installs the new one.
Benefits vs. Full Window Replacement
Replacing only the sealed unit costs 40–60% less than replacing the entire window assembly. The existing frame, sash, and hardware remain in place, which preserves the window’s appearance and avoids the cost and disruption of frame removal. Sealed unit replacement is the correct repair for foggy windows when the frame is structurally sound.
Sealed Unit Specifications We Install
We install double-pane and triple-pane IGUs with Low-E coated glass, argon gas fill, and warm-edge spacer bars for maximum insulation. All replacement units are manufactured to exact dimensions with the same glass specifications (Low-E, tint, obscure) as the originals.
Sealed Unit Services in Calgary
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Get Your Free Quote Today
Submit your project details and receive a transparent, no-obligation estimate. For emergencies, call our hotline directly.
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Emergency Line (403) 205-2604
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Operating Hours 24 Hours / 7 Days
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Service Area Calgary & Surroundings
Frequently Asked Questions
No. Once the perimeter seal has failed, the moisture inside the cavity is permanent. Some companies offer ‘defogging’ services that drill into the glass and attempt to dry the cavity, but this does not restore the insulating gas fill or fix the failed seal. The proper repair is sealed unit replacement.
Look for persistent fog, moisture, or condensation between the glass panes that cannot be wiped away. You may also notice water droplets, white haze, or dirt streaks inside the glass cavity. These are all signs of seal failure.
Yes. A failed sealed unit has lost its insulating gas fill and provides roughly the same insulation as single-pane glass. Replacing it with a new argon-filled, Low-E coated unit restores proper insulation and can reduce heat loss through that window by 30–50%.
Quality sealed units installed in Calgary typically last 15–25 years. Factors that affect lifespan include sun exposure (south and west-facing windows fail earlier), glass quality, sealant quality, and installation workmanship.
Get Your Free Quote Today
Submit your project details and receive a transparent, no-obligation estimate within 2 hours. For emergencies, call our hotline directly.