Green mould on wood is primarily caused by fungal growth thriving in damp conditions.
Green mould that appears on wood surfaces is a type of fungus. This fungus requires specific environmental conditions to grow and spread. According to the provided reference, mold, specifically green mold, is a type of fungus that grows in damp environments and feeds on organic materials such as wood. This highlights that the combination of moisture and the organic nature of wood is the key driver.
Key Causes of Green Mould Growth
The presence of moisture is the most significant factor enabling green mould to grow on wood. As the reference notes, areas with high humidity levels, leaks, or condensation are prime real estate for these fungi.
Here are the primary conditions that promote green mould on wood:
- High Humidity: When the air contains excessive moisture, wooden surfaces can absorb it, creating a damp environment suitable for mould spores to germinate and grow.
- Leaks: Water leaks from roofs, pipes, or walls directly saturate wood, providing the necessary moisture for mould development.
- Condensation: When warm, moist air comes into contact with colder surfaces (like wood near windows or uninsulated walls), it forms condensation, wetting the wood and facilitating mould growth.
- Poor Ventilation: Lack of air circulation prevents moisture from drying, trapping it on or within wooden materials.
- Contact with Damp Surfaces: Wood in direct contact with damp soil, concrete, or other wet materials can absorb moisture.
These conditions provide the ideal breeding ground for the fungal spores that lead to green mould. The wood itself acts as the food source (organic material) for the fungus.
Conditions Favouring Green Mould on Wood
| Condition | Description | Example Scenario |
|---|---|---|
| High Humidity | Excess moisture in the air | Unventilated bathroom or basement |
| Leaks | Unwanted water ingress | Leaky roof dripping onto attic beams |
| Condensation | Moisture forming on cool surfaces | Window frames in humid rooms during cold weather |
| Poor Ventilation | Stagnant, moist air | Crawl spaces or enclosed cabinets without airflow |
Preventing Green Mould on Wood
Preventing green mould on wood primarily involves controlling moisture levels. Practical steps include:
- Repairing leaks promptly.
- Improving ventilation in damp areas like bathrooms, kitchens, and basements.
- Using dehumidifiers in high-humidity environments.
- Ensuring proper insulation to reduce condensation.
- Applying moisture-resistant finishes to wood surfaces.
- Maintaining good airflow around wooden structures.
By controlling the damp conditions that fungi need to thrive, you can significantly reduce the risk of green mould appearing on wood.
