Major Causes of Mold Growth in Homes


Just because you can’t see mold it doesn’t mean you can ignore the problem! If mold isn’t taken care of properly, it can cause lasting damage to your home and have serious health implications. It’s important to understand the causes of mold growth so that you can make informed decisions. So, what causes mold? Keep reading to learn more.


If humidity levels are too high inside your home, mold is likely to grow. Excessive humidity makes it difficult for your air conditioner to remove excess moisture from your home’s air. When there’s too much moisture, mold can thrive on building materials that absorb and retain water on wooden doors, painted drywall and plywood floors.

If you notice a musty odor or see signs of mold growth, such as black spots or mildew, have a mold removal Hamilton professional inspect your home to determine if excessive humidity is causing problems. You may need to install a dehumidifier or ventilation system in order to lower indoor humidity levels.

Poor Ventilation

Poor ventilation and excessive moisture are among the most common causes of mold growth. In fact, it’s estimated that 60% to 80% of all homes have a moisture problem, which means homeowners should be vigilant about identifying signs of mold growth and taking measures to address these problems. Some telltale signs include discolored wallboard, musty odors or damp spots on walls or floors. And if you have central air conditioning, vents should be cleaned annually by a professional service.

Leaky Roof or Plumbing

Leaky roofs or pipes provide a moist environment that’s just ripe for mold growth. If you see water or moisture damage to your ceiling, walls, carpets, cabinets, or furniture, look into roof and plumbing repair. Many insurance companies offer affordable programs to help you get these issues taken care of quickly and easily. You’ll not only prevent a major mold outbreak, but you’ll also save money on electricity bills and improve your home’s resale value.

Poorly Insulated Walls/Roof

Homeowners commonly overlook basic aspects like insulation, which is a major cause of mold growth. If your walls and roof are poorly insulated, you’re inviting cold air to creep into your home and remain there during warmer months. In turn, moisture within your home will be unable to escape, creating an ideal environment for mold growth. To prevent moisture buildup and ward off harmful mold spores, consider adding additional insulation or purchasing more efficient HVAC equipment.

A Damp Basement

Basements, like most other parts of your home, have a tendency to accumulate moisture. If you don’t properly prepare basements and other areas prone to dampness for cold weather, you can end up with some pretty major problems. When it comes to mold, it doesn’t take much. Just enough moisture and low temperatures for a few weeks, and your drywall could be covered in mold. Have a mold remediation Hamilton expert inspect your home’s basement.

If your home is heavily infested with mould, mould removal Hamilton is your best bet. Please speak to a local mould removal specialist for further queries.

The author is a seasoned professional specialized in mold removal in Hamilton. With over 20 years of practical experience, he is committed to providing reliable and quality mold remediation. Visit for more details.

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