In this topic
- Mold can start on damp materials within 24 to 48 hours.
- Leaks, high humidity and condensation are the main causes.
- Removing mold without fixing the moisture means it comes back.
Mold spores are always in the air. They only become a problem when they land on something that stays damp. Drywall paper, wood, dust and carpet backing are all food.
This topic is part of our complete guide to mold remediation. The articles for this topic are listed at the end of the page.
Common moisture sources
- Plumbing leaks inside walls and under sinks.
- Roof and window leaks.
- High indoor humidity from showers, cooking and poor ventilation.
- Condensation on cold surfaces like windows, pipes and exterior walls.
- Damp crawl spaces and basements.
- Water damage that wasn't dried properly.
Humidity targets
Keeping indoor relative humidity below about 50 to 60 percent makes it much harder for mold to grow. A cheap hygrometer tells you where you are. Bathroom fans, kitchen hoods and a dehumidifier in damp areas help.
All 12 articles in this topic
0 published · 12 coming soon- What Conditions Allow Mold to Grow Indoors?Coming soon
- How Much Humidity Is Needed for Mold to Grow?Coming soon
- How Quickly Can Mold Start Growing After a Water Leak?Coming soon
- What Causes Mold to Grow in Bathrooms Without a Leak?Coming soon
- Why Does Mold Grow on Air Conditioning Vents?Coming soon
- What Causes Mold to Grow Behind Furniture Against Exterior Walls?Coming soon
- How Does Poor Ventilation Contribute to Mold Growth?Coming soon
- What Causes Mold to Grow in a Home's Attic?Coming soon
- Why Does Mold Form on Window Sills and Frames?Coming soon
- What Causes Mold Growth Inside Walls With No Visible Water Damage?Coming soon
- How Does a Slow, Hidden Leak Lead to Widespread Mold Growth?Coming soon
- Why Is Mold More Common in Basements Than Other Rooms?Coming soon
Mold growing somewhere it keeps coming back?
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