Mold—it's sneaky, nasty, fast-growing, destructive, and sometimes highly dangerous. Unfortunately, not a lot of people catch mold in their home right away, especially since mold tends to start out in places rarely visited like the crawl space. Crawl space mold problems are pretty common in houses that have not been properly waterproofed, so it is wise to get to know the signs that there could be a mold problem. Take a look at some of the signs that could indicate you have dangerous or damaging mold growing beneath the house.
Your humidity levels in the house are higher than they should be.
If the air in your home is more humid than it is outside, it is a sign that there is moisture being trapped either within the house or beneath it. High humidity levels can show up as things like condensation on the windows or moisture collection on walls that appear to sweat. But you can also usually feel a higher humidity level as well. Many homeowners install a dehumidifier and go on about their daily life, but this does nothing to combat or fix the problem, which can easily lead to a major mold threat under the house.
You notice dark spots of grime on floorboards or baseboards.
If you start seeing a collection of what looks like dark dirt on places in close proximity to the crawl space, it could mean there is mold growing under your home. While these signs on baseboards and in the corners can be easily disregarded, others really can't. For example, say you decide to replace your kitchen tile, but when you pull up the tiles, you find spots of darkened grime. This may not be dirt; it could actually be mold that is leaching through the wooden underlayment from the crawl space.
Your home has poor air quality with no obvious reason.
If you have ever had the air quality in your home tested and the resulting news was not good, the crawl space could very well be to blame. It is not uncommon for homes to test positive for mold spores in indoor air with no obvious signs of mold. Because mold travels by air, if you do have a mold problem down below, the mold can get into the house through even the tiniest cracks and openings. For example, mold spores can travel through the ductwork of your HVAC system.
Contact a crawl space waterproofing service for more help.