Mold typically occurs in basements and crawl spaces because of unregulated humidity levels or water intrusion. All basements should have a self-draining dehumidifier that’s capable of maintaining a relative humidity of 35-50%. Consistent humidity above 60% will result in mold growth on wood, paper, leather, and other organic materials.

The most common types of basement mold is Aspergillus/Penicillium. These two types of mold have very similar structures and are commonly found on mold reports and listed together.

Flooding rainwater or floor heating systems, causing damage, peeling paint and mildew.
Mold image 1

Mold Removal Services

  • Mold removal
  • Mold remediation
  • Mold inspection
  • Black mold removal
  • White mold removal
  • Green mold removal
  • Pink mold removal
  • Attic mold removal
  • Basement mold removal
  • Living area mold removal
  • Air duct mold removal

Basement & Crawl Space Mold Removal Services Areas: NH, MA, and ME

EnviroVantage provides basement and crawl space mold removal services in New Hampshire, Massachusetts, and Maine. Please call 1-800-640-5323 for more information or to obtain a quote.


629 Calef Highway (Route 125)
Epping, NH 03042

10 Spencer Street
Stoneham, MA 02180

680 Stroudwater Street
Westbrook, ME 04092

How to Identify Basement Mold

Mold is a naturally occurring fungi found all around us, both indoors and out. It can come in a variety of colors, but most types of mold are black, green, or gray. If you can see mold, regardless of its color, we encourage you to contact us directly, and we’ll be happy to come out and inspect the area — free of charge.

If you suspect you have mold — or you don’t have any visual signs but may suffer from allergy-like symptoms that can’t be explained — you can opt to hire a certified mold inspector. This expert will conduct scientific air sampling and collect samples that will be analyzed in a lab. You aren’t required to go through a mold inspector first, but it can be helpful to do so if you don’t see any visual signs of growth.

Side View Of A Young Woman Looking At Mold On Wall

How Can Mold Spread Throughout Your Home?

There are many gaps between the basement and first living level of a home that allow air to penetrate more readily between the two floors. If there are mold spores in the basement, there is a good chance they can make it to the first floor, though it’s unlikely they will spread beyond that level.

Health Effects of Basement Mold

High levels of mold can be dangerous, which is why it’s important to identify and remove the problem as soon as possible. Certain mold spores — especially those with an elevated concentration — have been found to cause health problems such as a runny or blocked nose, watery or red eyes, a dry cough, skin rashes, a sore throat, sinusitis, wheezing, asthma, and/or pneumonia.


How Can You Prevent Mold in Basements and Crawl Spaces?

Mold thrives on moisture, so it’s essential to prevent and stop any leaks or water intrusion. We also recommend investing in a self-draining dehumidifier that’s capable of maintaining a relative humidity of 35-50%.

Also, it’s important to carefully manage the items that you store in the basement. All items should be stored in plastic containers on elevated plastic or metal racks. Avoid cardboard or wood, which are organic and can serve as breeding grounds for mold. If you insist on cardboard boxes, make sure they are elevated and do not contact with the basement floor.

Mold Removal Certifications & Training

We have more than 35 years of experience in attic mold removal, and our team holds certifications from the following nationally recognized indoor quality organizations:

The head of EnviroVantage’s Residential Division is Chris Prior, who is both a certified mold inspector and certified mold remediation supervisor.

Our team is also cross-trained, which means every member has experience in mold remediation, asbestos abatement, duct cleaning, and sensitive homeowner specialty cleaning. That means if we’re handling an attic mold problem and find asbestos, we can handle it. We’re a one-stop shop so you don’t have to make appointments with multiple contractors.

Female worker of cleaning service removes mold from wall using spray bottle with mold remediation chemicals and scraper tool.

Basement & Crawl Space Mold Removal Cost

Basement mold removal cost will depend on two factors: the location of the mold in your home and how much is present. Costs can range anywhere from $1,500 to $50,000 (for a complete house gut), so it’s best to contact us about your specific situation.

What is the Process for Removing Basement Mold?

If mold is visible, the inspection process is not necessarily a long one. We can come to your home (free of charge), look at the area, and determine the next steps for mold removal. All of this can take place within a day or two, and we can schedule mold removal for the following day or within the next week, depending on our work load.

If you suspect you have mold in your basement or a crawl space, you can opt to hire a certified mold inspector. This expert will collect samples that will be analyzed in a lab.

The process for removing mold in a basement or crawl space is the same as any other area in your home. At EnviroVantage, we will:

  • Identify and locate the source that allowed the mold to grow in the first place.
  • Form a detailed strategy by identifying the necessary steps to correct the issue, materials that are needed for removal or sanitation, and methods of reducing the risk of future mold growth.
  • Remove the mold through one of our numerous methods, such as:
    ·      Eliminating impacted materials
    ·      Using chemicals and dry ice treatments
    ·      Dehumidification
    ·      Using hydroxyl generators
    ·      Applying mold-resistant coatings
  • Provide an independent verification process to prove the work was successful. We can hire an independent mold investigator, otherwise known as a hygienist, who can perform post-remediation verification. This provides us with a visual assessment of the work zone, as well as air and surface samples.

Your family deserves a healthy home.

Contact EnviroVantage today for help with basement or crawl space mold removal. We look forward to answering your questions and helping you maintain a healthy home.