Moisture Management Research and Development

At What Moisture Level Does Mold Grow in Drywall?

The presence of moisture is necessary for mold growth, a common concern for drywall, a porous material. The moisture content of drywall is highly relevant as it influences the likelihood of mold development.

Drywall absorbs moisture from its surroundings, including air, walls, and floors. When the moisture content exceeds a certain threshold, it creates a favorable environment for mold spores to germinate and grow. Studies have shown that mold growth occurs when drywall’s moisture content exceeds 15%. At this moisture level, the drywall’s susceptibility to mold damage intensifies.

It is crucial to monitor the moisture levels in drywall, particularly in areas prone to moisture, such as bathrooms, kitchens, and basements. Excessive moisture can penetrate drywall, leading to structural damage, health hazards, and costly repairs. Proper ventilation, dehumidification, and regular inspections help prevent moisture buildup, reducing the risk of mold growth.