Wine Cellar Glazing Condensation: Real Causes and Lasting Solutions

Condensation on glass affects visibility and can signal a thermal imbalance. The key is identifying the exact cause. Otherwise, you correct temporarily and the problem returns.

1) Why Condensation Appears

Condensation appears when a surface becomes cold enough for air humidity to turn into droplets. In a glazed cellar, this happens especially when:

• the glass is cold
• the air outside the cellar is humid
• there are air exchanges, thermal bridges, or poor circulation

2) Common Causes

• imperfect sealing around doors or joints
• insufficient insulation or thermal bridges
• glazing poorly suited to the temperature differential
• poorly designed ventilation or stagnation zones
• sun exposure or nearby heat sources
• heated floor under or near the cellar
• high ambient humidity in the adjacent room

Often, it's not a single cause. It's a combination of details.

3) Lasting Solutions, by Priority

Sealing and construction details

Insulation and thermal bridges

Ventilation and air circulation

Glazing and frame selection

System calibration and adjustments

A good system doesn't compensate for a weak envelope. That's why pre-construction validation is so important in a glazed cellar.

4) What to Avoid

• raising the temperature just to mask the phenomenon
• adding temporary solutions that don't address the cause
• ignoring sealing because "the door closes well"
• assuming the problem comes only from the unit

Conclusion

A glazed cellar can be spectacular and stable. The condition is a coherent technical approach, from glazing to ventilation.

Have condensation? Send photos of the glazing, joints, and interior. We'll point you to the real cause.