How to deal with gypsum getting damp

Mar 15, 2026

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Don't panic if you find your plaster is damp. Following these steps can salvage 80% of minor dampness issues:

 

Physical Adsorption: Wrap the damp area with anhydrous calcium chloride or silica gel desiccant, replacing it every 6 hours.

 

Air Convection: Maintain good indoor air circulation; using a dehumidifier will enhance the effect.

 

Low-Temperature Drying: Use a hairdryer on a low setting, moving it 30cm apart to avoid localized overheating.

 

Long-Lasting Moisture Prevention Essentials: These daily habits can keep plaster products away from dampness:

 

Maintain an ambient humidity of 45%-55%.

 

Apply a special protective agent to the plaster surface before the rainy season.

 

Place a thermometer and hygrometer in the display case for real-time monitoring.

 

Avoid placing plaster products in direct airflow from an air conditioner.

 

Special Situation Handling: These situations require special treatment:

 

Mold: Gently wipe the mold spots with a soft brush dipped in 75% medical alcohol.

 

Severe Deformation: Place in a well-ventilated area to air dry naturally; do not forcibly correct it.

 

Art Restoration: Contact a professional art restorer for targeted treatment.

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