Crawl Space Mold Removal & Prevention Solutions

The Helitech Way

Crawl Space Mold Removal

At Helitech Waterproofing & Foundation Repair, we provide soda blasting mold removal to protect your home and family. Unlike traditional methods that only disinfect, soda blasting physically removes mold, neutralizes spores, and deodorizes your crawl space for a healthier environment. We go beyond removal by tackling the root cause—moisture intrusion—with expert waterproofing and humidity control to prevent future mold growth. With trusted service since 1987, Helitech ensures your home stays safe, dry, and secure for good. 

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Life happens in your home. At Helitech, we believe you and your home deserve the best. Heal your home with Helitech. 

 

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Warning Signs of Mold in Your Crawl Space

Mold often starts in hidden areas like your crawl space, where excess moisture and poor air circulation create the perfect conditions for it to grow. Catching it early is key to preventing damage to your home and protecting your family’s health.

Here are some common signs that mold may be growing in your crawl space:

  • Musty or damp odors coming from floors, vents, or the basement.
  • Visible mold growth on wooden joists, insulation, or subflooring.
  • Increased allergy or asthma symptoms while indoors.
  • Warped or sagging floors above the crawl space.
  • Excess moisture or condensation in the crawl space.
  • Pests or insects, like cockroaches, that feed on mold.

Even if you can’t see the mold, these signs are strong indicators that it could be present and spreading. At Helitech, our team performs thorough inspections to detect mold and offers safe, effective solutions like soda blasting to remove it completely and restore the health of your home.

Crawl Space

Mold Removal The Helitech Way

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Dry the Crawl Space

To permanently eliminate mold, humidity levels must stay below 60%, and wood moisture should be under 20%. Skipping this step risks the mold coming back, putting your home and health at risk.

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Keep Mold From Spreading

To stop mold from spreading, the area is placed under negative pressure, a HEPA air scrubber is installed to filter the air, and the HVAC system is turned off to prevent cross-contamination.

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Remove the Mold First

Mold must be removed, not just treated. Dead mold can trigger allergies and attract pests. At Helitech, we use eco-friendly soda blasting to safely remove mold at the source.

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Apply Safe Mold Products

We use food-grade sodium bicarbonate to remove mold and peroxide to kill it at the root—because the solution should never be more harmful than the problem.

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10-Year Mold Prevention Warranty

To provide long-term protection, we keep mold away with a high-performance dehumidifier and our moisture-resistant mold barrier applied to your crawl space or basement subfloor and joists.

Haven’t had a drop of water in my basement since Helitech worked on it. It wasn’t uncommon to have an inch of water down there before.

Chris W.
BRANSON, MO

My basement was bad for leaking water. After getting all the small details out of the way, the crew showed up on time and called before they got here. I went down many times to take pictures the crew was happy to show me and explained what they were doing and how the system would work. And now my basement looks a lot better then it used to and it’s staying dry.

Jason K.
CENTRALIA, IL

I contacted Helitech to conduct an inspection of a home I was purchasing. The sales rep., Jon Courtney, was thorough and extremely knowledgeable. He truly seemed to have my best interest at heart and helped me feel confident that property I was purchasing would be free of headaches during the spring rains. I never once felt pressured into buying a product I didn’t need. I would highly recommend Helitech to anyone who is in need of their services!

Kevin G.
O’FALLON, IL

Alex, Dwayne, and Dan did a fantastic job piering my foundation. They were prompt, courteous, neat, and worked at a hard job without stopping. They clearly explained what needed to be done, and did not do more work than was required. They also took the time to consult with contractors who were doing other types of work on my house and made sure that everyone was in agreement as to what was to be done, the timing of it, and by whom. Randy who initially came out to bid on the job was also excellent. Helitech came highly recommended, and I can see why. I would use them again in a heartbeat.

Renee H.
ST. LOUIS, MO

Just wanted to let you know that your guys did a great job today! Aaron B, Kevin W, and Justin R worked hard and did a professional job!

Sharon S.
ST. LOUIS, MO

Haven’t had a drop of water in my basement since Helitech worked on it. It wasn’t uncommon to have an inch of water down there before.

Chris W.
Array

My basement was bad for leaking water. After getting all the small details out of the way, the crew showed up on time and called before they got here. I went down many times to take pictures the crew was happy to show me and explained what they were doing and how the system would work. And now my basement looks a lot better then it used to and it’s staying dry.

Jason K.
Array

I contacted Helitech to conduct an inspection of a home I was purchasing. The sales rep., Jon Courtney, was thorough and extremely knowledgeable. He truly seemed to have my best interest at heart and helped me feel confident that property I was purchasing would be free of headaches during the spring rains. I never once felt pressured into buying a product I didn’t need. I would highly recommend Helitech to anyone who is in need of their services!

Kevin G.
Array

Alex, Dwayne, and Dan did a fantastic job piering my foundation. They were prompt, courteous, neat, and worked at a hard job without stopping. They clearly explained what needed to be done, and did not do more work than was required. They also took the time to consult with contractors who were doing other types of work on my house and made sure that everyone was in agreement as to what was to be done, the timing of it, and by whom. Randy who initially came out to bid on the job was also excellent. Helitech came highly recommended, and I can see why. I would use them again in a heartbeat.

Renee H.
Array

Just wanted to let you know that your guys did a great job today! Aaron B, Kevin W, and Justin R worked hard and did a professional job!

Sharon S.
Array
Mold-infested crawl space with visible wood rot and moisture damage on floor joists before soda blasting mold remediation by Helitech Waterproofing & Foundation Repair.
Before
Crawl space after soda blasting mold remediation by Helitech Waterproofing & Foundation Repair, showing clean, mold-free wood joists and improved structural integrity.
After

Before & After

Soda Blasting Mold Removal

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