How to Stop Condensation in a Warehouse?

Stopping condensation in a warehouse requires a strategic approach to managing humidity, airflow, insulation, and temperature differences. Here's a practical step-by-step guide to help you eliminate or significantly reduce condensation:

1. Identify the Source of Moisture

Check for leaks – Roofs, gutters, walls, and plumbing.

Ground moisture – Rising damp from unsealed floors.

High internal humidity – From processes, forklifts, or stored goods (like food or paper).

2. Improve Ventilation

Condensation forms when warm, humid air hits cold surfaces. Improving airflow reduces moisture buildup.

Solutions:

Install high-volume low-speed (HVLS) fans to circulate air.

Use ridge vents, louvres, or mechanical exhaust fans.

Ensure cross-ventilation by opening opposing doors or adding roof vents.

3. Insulate Surfaces

Prevent cold surfaces that attract condensation.

Prioritize:

Roof insulation – e.g., foil-faced batts or spray foam.

Wall insulation – Rigid foam or insulated panels.

Insulated doors or thermal curtains for loading bays.

4. Control Humidity

The direct cause of condensation is over moisture in the place. Target relative humidity (RH) below 60% to prevent condensation and mould.

Methods:

Use an industrial dehumidifier for warehouse. Preair is one of the most reliable dehumidifier manufacturers. Various industrial dehumidifiers, including horizontal and vertical types, stand-alone and ceiling-mounted types, manufactured by Preair, are on sale. Please tell us what kind of warehouses you have and what target humidity you want to keep. We will tailor a practical and cost-effective solution for you.

Install hygrometers to monitor RH in real time.

Dry out wet materials before bringing them into storage.

5. Seal the Building Envelope

Stop warm air from entering and condensing on cold surfaces.

Key Areas:

Seal doors, windows, and wall penetrations.

Use vapor barriers on floors and walls, especially on older concrete slabs.

Consider air curtains at loading docks.

6. Monitor and Maintain

Conduct regular inspections for moisture, mould, or corrosion.

Set up moisture sensors or data loggers to track temperature and humidity trends.

Review HVAC and ventilation system performance seasonally.

Bonus Tips:

Avoid storing cold-sensitive goods near exterior walls or doors.

Keep warehouse doors closed when not in use to reduce external humidity exchange.

Use drip trays or guttering for HVAC units or refrigeration pipes.