The Impacts of a Moldy Crawl Space

A moldy crawl space can have a big impact on the health of your home. Although crawl spaces may seem "out of sight, out of mind" for most homeowners, it's very important to maintain a healthy crawl space to keep the rest of your home healthy.

Checking your crawl space periodically for mold growth will help you identify the mold problem early and hopefully be able to eliminate it before it causes more damage.

If you think your home has a moldy crawl space, contact LRE Foundation Repair for your free inspection.

Why Does Mold Grow in a Crawl Space?

Based on the way crawl spaces are designed, they don't allow for much airflow and they are usually dark and damp spaces. These characteristics make crawl spaces the perfect environment for mold to grow if they are left unkempt.

Moisture is the main culprit for mold growth in a crawl space. Once moisture enters your crawl space, it usually can't escape on its own since there is very little air flow and no escape paths for the water to exit.

Moisture can enter your crawl space through flooding, humid air coming through the vents, or seep through cracks in the walls. The moisture then creates a perfect breeding ground for mold and can become out of control if left untreated.

Stack effect in a moldy crawl space

How a Moldy Crawl Space Impacts Your Home

Unfortunately, the mold in your crawl space doesn’t just stay in your crawl space. A lot of homeowners are under the impression that the health of their crawl space has no impact on the inside of their home, when in fact it does.

If there is moisture or mold in your crawl space, the mold spores or musty odors can make their way up into the main living areas of your home.

This can impact you and your family’s health as the mold spores can make their way into your home and cause allergens and other potential respiratory problems.

The Stack Effect

The stack effect is a phenomenon that allows the air inside your crawl space to seep up through the floorboards of your home and enter the main living areas of your home. It acts as a vacuum and the air from your crawl space is constantly sucked up into your home.

Since the stack effect moves the crawl space air upward, it’s important that the air in your crawl space is dry and healthy.

How to Prevent Mold Growth

Once you get rid of the mold in your crawl space, it will only be permanently gone if you take the proper measures to make sure it can never grow back. As moisture is the main culprit for mold growth, you must remove the moisture source in order to completely prevent mold from growing.

At LRE Foundation Repair, we offer crawl space waterproofing solutions to remove the moisture from your crawl space.

  • Crawl space vapor barrier: The vapor barrier can be used to encapsulate your crawl space with a thick, waterproof liner that eliminates the ability for mold to grow. It also helps prevent other unwanted problems like pest infestation and moisture issues.
  • Crawl space dehumidifier: Installing a dehumidifier in your crawl space is a great way to keep the air constantly dry and clean without much maintenance from you.
Crawl Space Vapor Barrier

Avoid a Moldy Crawl Space with LRE Foundation Repair

LRE Foundation Repair has helped Florida homeowners protect their homes since 1989. As mold can be a nasty problem to have, it can also impact your health if it’s not properly taken care of. Keep your crawl space a dry, healthy environment with crawl space solutions from LRE Foundation Repair

Contact us today for your free inspection on how to prevent a moldy crawl space!

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See what our customers have to say about our work.

When David from High Springs noticed the floors of his historic home starting to sag, he knew it was time to call LRE. 🏠 Our team at LRE Foundation Repair installed the SmartJack System — a durable, adjustable support solution designed to lift, level, and permanently stabilize crawl space floor joists.

Here’s why homeowners trust LRE’s SmartJack system: ✅ Galvanized steel supports that resist corrosion and won’t settle over time ✅ Restores uneven floors to their proper level ✅ Provides permanent stabilization for long-term protection Now, David’s home is stronger, safer, and ready to stand the test of time. Watch to see how LRE helped preserve the integrity of his historic home — and hear what David had to say about his experience!

David V. | High Springs, FL

Norbert’s driveway, walkway, and front porch in Gainesville, FL had settled over time, creating uneven surfaces and serious tripping hazards that had even caused previous injuries. After contacting LRE Foundation Repair, our team lifted and leveled the slabs with PolyLevel and sealed the cracks with NexusPro for long-lasting protection. Norbert was very pleased with the results and our team’s professionalism.

We’re grateful he shared his experience and helped other homeowners learn about reliable, long-term concrete repair solutions

Norbert M. | Gainesville, FL

When Toby bought his new home in Beverly Hills, Florida, he noticed water pooling along the side of his driveway and in front of his garage, caused by the slope directing water toward the house. Our team at LRE designed and installed a custom exterior drainage system to fix the problem for good. We added an enhanced channel drain in front of the garage, connected it to an underground drainage pipe, and tied in the home’s downspouts to safely redirect water away from the foundation.

Now, Toby’s property stays dry and protected — and he couldn’t be happier with the results!

Toby A. | Beverly Hills, FL

Scott and Carrie from Belleview were preparing to sell their home, but noticed that the cracks in their concrete pool deck were discouraging potential buyers. That’s when they reached out to us at LRE for help.

After our Customer Care team scheduled an appointment with one of our expert Design Specialists, we inspected the pool deck and developed a repair plan using our Two-Part Concrete Protection System — combining PolyLevel to lift and level the slabs, and NexusPro to seal the cracks and prevent future damage.

Scott and Carrie were thrilled with the transformation and the professionalism of our team — and they’re excited to share their wonderful experience! 🎥 Watch their story and see how LRE helped restore their pool deck and peace of mind!

Scott & Carrie D. | Belleview, FL

Christine and Scott in Leesburg, FL, noticed significant settlement inside and outside their home, with large cracks in their walls and tile flooring. Seeking a permanent solution, they turned to LRE Foundation Repair. Our team installed helical piers, interior slab piers, and PolyLevel to fully stabilize their home. Now, they have peace of mind knowing their home’s foundation is finally permanently secure.

Christine & Scott R. | Leesburg, FL

After noticing exterior wall cracks and doors that wouldn’t close properly, Mary knew her home needed help. Previous repairs had failed, leaving her without a lasting solution or a company to stand behind the work. In this testimonial, Mary shares how LRE Foundation Repair permanently stabilized her home and restored her peace of mind with proven solutions, lifetime transferable warranties, and double-backed warranty protection.

Mary Anne S. | Brooksville, FL

When Frank in Spring Hill, FL, noticed cracks in his walls, he turned to LRE Foundation Repair. Our Design Specialist confirmed foundation settlement and designed a plan using helical piers and a new exterior drainage system to stabilize the home and redirect water. With the repairs complete, Frank was thrilled with the results. Watch the video to see how LRE restored his home and peace of mind.

Frank N. | Spring Hill, FL

Patrick from New Port Richey noticed water entering through his home’s slab foundation during last year’s hurricanes and contacted LRE Foundation Repair for help. Our team installed a custom exterior drainage system, including a French drain to collect and redirect rainwater to a relief drain away from the home. We also connected his downspouts directly into the subsurface system to stop water from pooling near the foundation. The result? A dry, protected home — and one very happy homeowner.

🙌 Watch as Patrick shares his experience and see how LRE Foundation Repair helped protect his home from future flooding! 🌧️🏠

Patrick G. | New Port Richey, FL

When Terry purchased his new home in Tarpon Springs, his home inspector discovered a serious issue — the floor joists were being supported by makeshift car jacks! 😬 Looking for a long-term solution, Terry reached out to LRE Foundation Repair. Our team installed the SmartJack® System, providing strong, durable, and permanent support for the home’s floors.

Terry was so impressed with the results that he shared his incredible experience with us! 🙌 🎥 Watch his story to see how we helped restore lasting stability and peace of mind.

Terry C. | Tarpon Springs, FL

When Carin and Jon from Tampa, Florida, noticed buckling in the wood floors of their 1950s historic home, they suspected something was wrong beneath the surface. That’s when they called us at LRE Foundation Repair for a complimentary crawl space inspection. In this customer testimonial, hear directly from Carin and Jon as they share their experience—from the first inspection to the final results. Our expert Design Specialist identified major moisture issues in their crawl space, and our team got to work installing the CleanSpace™ Crawl Space Encapsulation System to create a dry, healthy environment under their home. Watch their story to see how we helped protect their home for years to come!

Carin & Jon B. | Tampa, FL

Before & after photos

Check out before and after photos from some of our completed projects.

  • Concrete driveway repair in San Antonio, FL

    The LRE team utilized our PolyLevel Solution to not only bring the concrete slabs back to an even, safe level but also fill the void underneath and permanently stabilize the driveway.

  • Channel drain solution in Seminole, FL

    The LRE team installed a 4″ channel drain within the pool deck’s concrete to collect rainwater and divert it away from the home through a subsurface drainage system.

  • Crawl space repair in Dunedin, FL

    To repair sagging floor issues, LRE used SmartJacks, made from galvanized steel, and our Crawlspace Encapsulation System to control moisture, air flow, and stabilize the structure.

View All Before & Afters

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