Skylight Condensation & Interior Moisture Repair
Skylight condensation can cause foggy glass, damp drywall, mold, and ongoing moisture issues inside the home. We diagnose the true cause — whether it’s poor insulation, temperature imbalance, or skylight failure — and provide long-term solutions.
Why Skylight Condensation Happens
Condensation is not technically a “leak,” but it often causes the same interior damage. It forms when warm indoor air meets a cold skylight surface.
Most issues are caused by:
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Poor insulation around the skylight shaft
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Missing or damaged vapor barrier
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High interior humidity
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Older acrylic skylights with weak thermal performance
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Broken seals in insulated glass units (foggy glass)
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Poor room ventilation
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Uninsulated attics around the skylight
Our Condensation Repair Process
1. Detailed Moisture Assessment
We inspect the skylight, interior shaft, surrounding attic, and insulation to identify where heat loss or humidity imbalance is occurring.
2. Thermal & Insulation Correction
We upgrade or correct insulation around the skylight shaft, ensuring warm indoor air isn’t escaping and causing moisture buildup.
3. Vapor Barrier Restoration
We repair compromised vapor barriers to prevent humid indoor air from entering the attic or skylight shaft.
4. Skylight Unit Inspection
If the skylight glass is fogged or has internal condensation between panes, we evaluate the integrity of the glass seal.
5. Replacement Option (if required)
If the condensation is due to a failed glass seal or outdated acrylic dome, we recommend a high-efficiency VELUX skylight with:
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Low-E3 coating
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Argon gas
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Advanced thermal insulation
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No-Leak flashing
Signs of Skylight Condensation Problems
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Water drops forming on the inside of the skylight
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Foggy or hazy glass
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Moisture dripping from the skylight frame
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Mold or mildew around the skylight
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Bubbling or peeling paint
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Damp drywall around the shaft
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White stains (“mineral deposits”) on the skylight glass
Long-Term Solutions for Interior Moisture
Depending on the home and skylight type, long-term solutions may include:
✔ Better insulation around skylight shaft
Stops warm air from reaching cold surfaces.
✔ Vapor barrier installation or correction
Prevents indoor humidity from entering attic spaces.
✔ VELUX glass skylight upgrade
Modern Energy Performance glass drastically reduces condensation.
✔ Humidity control recommendations
Bathroom vents, kitchen vents, dehumidifiers, and room airflow improvements.
When Condensation Means You Need a New Skylight
A skylight should never have water or fog inside the glass unit.
If this happens, the insulated glass seal has failed.
Replacement is recommended when:
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Condensation is between glass panes
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Glass looks permanently foggy or milky
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Skylight is acrylic (plastic dome)
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Energy efficiency is poor
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Condensation returns repeatedly despite repairs
We install modern VELUX skylights with upgraded insulation and better thermal control.
Why Homeowners Choose Us
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Certified VELUX Installer
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Licensed & Insured (#1099068)
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Over 10 years of skylight experience
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Precise diagnostics — no guesswork
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Clean, professional, respectful service
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Transparent pricing
Service Area
We proudly serve all of Orange County, including:
Irvine, Mission Viejo, Lake Forest, Laguna Niguel, Laguna Hills, Aliso Viejo, Newport Beach, Costa Mesa, Tustin, Orange, Laguna Beach, Dana Point, San Clemente, Garden Grove, Huntington Beach.
FAQ
Q: Why is my skylight dripping water inside?
A: This is usually condensation caused by poor insulation or humidity, not an exterior leak.
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Q: Can condensation damage drywall?
A: Yes — long-term moisture leads to mold, bubbling paint, and structural problems.
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Q: Should I replace my skylight if it has fog inside the glass?
A: Yes. That means the glass seal failed and the insulated unit must be replaced.
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Q: Can condensation be completely fixed?
A: Yes — with proper insulation, vapor barrier correction, and humidity control.