“I'm so happy I chose Pure Air to help me with a huge mold problem in my basement. The process was easy, very efficient & I will definitely use them again! I highly recommend Pure Air, you won't regret it!”
A crawl space that isn't sealed and controlled becomes the single biggest source of moisture — and eventually mold — in a Piedmont home. Pure Air Charlotte clears debris, treats subfloor staining, fixes drainage, and seals the space with a thermal-blanket vapor barrier, so hot, humid Carolina summers stop feeding what grows underneath your floors.
4.9/5 stars on Google from 168 reviews. Every reviewer is a real client.
“I'm so happy I chose Pure Air to help me with a huge mold problem in my basement. The process was easy, very efficient & I will definitely use them again! I highly recommend Pure Air, you won't regret it!”
“We had an excellent experience with NC Pure Air! Jason took the time to guide us through the entire process, spending over two hours thoroughly evaluating the damage and explaining the steps needed to address it. He was clear, patient, and incredibly knowledgeable, which gave us so much confidence moving forward. The team sent to handle the demo and mold remediation was fantastic—professional, efficient, and easy to work with. Communication was excellent every step of the way, and the pricing was fair for the level of care and quality they provided. Their work was truly an investment in the safety and health of our family, and we couldn’t be more grateful. We highly recommend NC Pure Air to anyone dealing with mold or water damage!”
“If I could give 10 stars, I would! From the beginning to the end, nothing but excellence!! This has to be one of the greatest teams of experts I’ve ever encountered. Service with compassion, patience, understanding, and above all, exceptional knowledge. Every question I had was answered, every stage & procedure was explained. Thank you, Pure Air NC, for making our home safe again!! Daniel, Jared, Ally, Trevor, Avery, & Chris (I hope I’m not leaving anyone out) — Thank you!! 🙏☺️ ~S. Bullock”
“Trevor was amazing. Top tier service from start to finish. Trevor was extremely patient and easy to talk to. He took the time to explain how each machine would work and what to do if any of the machines reached a certain temperature. Communication was easy and always accessible as well. I can’t say enough about the quality of the service. The quality and customer service was excellent. Extraordinary!”
“Chris arrived on time to perform the fogging portion of the mold removal. David was able to explain the process and give suggestions on what to do get the maximum benefit from the treatment . Aly kept me updated and quickly answered all my questions.”
“Crew came out as scheduled. Great guys. Explained their procedures. Treated everything, inside cabinets, around furniture. Then wiped everything down. Odor and mold completely gone. They were very helpful in solutions to prevent this from reoccurring.”
Most crawl space problems don't announce themselves — they show up somewhere else in the house first. If any of these sound familiar, it's worth a look underneath.
Mold showing up in a closet, bathroom, or other room is often traced back to moisture rising from an unsealed crawl space below.
A musty smell with no obvious source is one of the most common early signs of a crawl space moisture problem.
Wood floor joists and subfloor absorb moisture from a humid crawl space long before you can see or smell the damage.
Standing water or consistently wet ground next to your home's foundation is a direct line into an unsealed crawl space.
Fatigue, headaches, or breathing issues that improve when you're away from home can point back to indoor air quality below your feet.
High humidity underneath the house is exactly the environment pests and bugs look for — and a way in to the rest of your home.
If a household member has tested positive for mold exposure or toxicity, an unsealed crawl space is one of the first places to check.
We didn't start as a crawl space company. We started as a mold remediation business — and expanded into crawl space services because moisture control down there is the single biggest lever on whole-home mold risk.
Having assisted countless families affected by mold-related illness — including personal experience on our own team — we deeply empathize with restoring health to a home and its homeowner.
We began as a mold remediation business and expanded into crawl space services specifically because moisture control there is the single biggest lever on whole-home mold risk.
Scientifically-validated moisture control that prevents recurrence — not just masks it.
Every treatment carries the same 1-Year Free Re-treatment Warranty as our mold remediation work.
A Charlotte-based team that shows up, not a national franchise call center.
July through November brings a lot of humidity that's tough on crawl spaces here — there are very few homes in the Charlotte/Piedmont region whose crawl space doesn't need some level of moisture control.
When humidity is high, the wood products in your crawl space — your subfloor and floor joists — absorb water straight out of the air. As the moisture content in that wood climbs, mold begins to grow. Charlotte's humid subtropical climate makes this an almost year-round risk, and it's why an encapsulation that only addresses what you can see — without controlling the moisture — doesn't hold.
Not everything below is needed for every crawl space — your technician tailors the scope to what your home actually requires. But this is the sequence we commonly follow on a full encapsulation.
Book Free ConsultationEvery project follows the same protocol — identify, fix the cause, treat, and prevent. Here's the high-level view; the detailed walkthrough follows below.
We inspect the crawl space for moisture sources, standing water, damaged insulation, and subfloor staining — and check whether ground water or drainage is part of the problem.
We address the moisture source itself — grading, drainage, sump pump, standing water — not just the symptoms sitting on top of it.
Debris is cleared, exposed wood and subfloor are treated for staining and microbial growth, and the space is prepped for sealing.
The vapor barrier, sealed walls, dehumidifier, and thermal-blanket insulation go in — so the fix holds through the next humid season, not just this one.
Not every crawl space needs every stage below, but this is the sequence we follow when a full encapsulation is the right call.
Great prep, great result
We remove the old vapor barrier, any damaged or mold-exposed insulation, and large rocks or bricks left behind from construction. High and low points in the ground get leveled, so the new vapor barrier can sit flat and seal properly.
The key to a great final product is great preparation. Skip this step and every step after it — the seal, the drainage, the thermal blanket — performs worse.
Subfloor & framing
We apply a concentrated hydrogen peroxide mixture to the exposed subfloor and framing. It minimizes staining and physical growth on the wood — the same wood that's been absorbing moisture out of the air every humid Charlotte summer.
If we find active mold during this stage, we scope it in alongside our full mold remediation treatment rather than treating the stain alone.
Where ground water is high
Where ground water is high — common across parts of the Piedmont — we install french drains around the perimeter of the crawl space as needed. Those drains lead to a sump pump that actively moves water out of the home and into the yard.
Every crawl space needs some way for water to escape. In an extreme rain event or with high ground water, water that enters the crawl space needs an exit — either a sump pump or a daylight drain.
Warranty-backed
Instead of insulating the subfloor, we move insulation to the walls. That creates a drier environment for floors and wood framing, keeps plumbing connections exposed for easier leak detection, and installs an insulative barrier around the entire foundation against outside air and moisture intrusion.
A longer warranty is available through our recurring inspection service, the Peace of Mind Warranty Plan — ask your consultant about it. Coverage assumes no new water intrusion, no prolonged high indoor humidity, and any recommended repairs completed.
Moisture control is what keeps a crawl space from becoming a mold problem in the first place. When active mold is found during a crawl space job, it's treated with the same lab-verified VaPURE™ process backed by the research below.
Field study · PDF
A six-month evaluation by the Army's Engineer Research and Development Center of the VaPURE™ application system on two occupied buildings at Fort Campbell, Kentucky — measuring both initial efficacy and recurrence.
Lab reports · PDF
A compiled set of GLP-compliant independent laboratory tests of the vapor peracetic acid (VPA) treatment against mold, bacteria, and viral targets — the underlying chemistry behind the Pure Air Charlotte VaPURE™ process.
White paper · PDF
A technical explainer of the three "magic-bullet" variables — 7.5μm particle size, vapor phase change, and dwell time — that make the treatment behave like a gas and reach where surface cleaning never does.
Fully sealing the crawl space ground and walls to prevent humidity and moisture issues. In general this includes a high-quality vapor barrier on the ground, plastic sealed to the walls, a dehumidifier, and drainage with a sump pump.
Almost certainly you need something, yes. The Piedmont's humid season — July through November — brings a lot of humidity that's tough on crawl spaces. There are very few crawl spaces in the Charlotte region that don't require some level of moisture control.
Sometimes, yes. If your crawl space doesn't need a full encapsulation, or budget doesn't allow for one right now, doing part of an encapsulation can work for a time before the rest of the project is completed.
When humidity is high, wood products — your subfloor and floor joists — absorb water from the air. As the moisture content in the wood increases, mold begins to grow.
No — this is commonly misunderstood, even by some crawl space contractors. At best, existing mold goes dormant; as soon as there's a new moisture event, it begins to grow again. If you already have active mold, pair encapsulation with our mold remediation treatment to actually treat it.
It depends on your crawl space, but in general, high humidity for prolonged periods increases pests and bugs, raises the probability of damaged ductwork and insulation, and increases mold growth. Over time, depending on severity, this can also lead to foundation and structural issues from wood rot.
Most crawl spaces carry small, subtle issues for long periods that eventually compound into larger problems — often exacerbated by a season of extremely high humidity, extreme storms like hurricanes, or a water leak.
99.9% of the time, yes. It's very rare to see a crawl space in the Charlotte area that doesn't need some level of dehumidification.
Every crawl space needs some way for water to escape. In an extreme rain event or with high ground water, water that enters the crawl space needs an exit — either a sump pump or a daylight drain.
The first step is a free telephone consultation with a specialist. It helps you understand your crawl space's specific moisture issues, what's needed to fix them, and what it will cost — including Pure Air Charlotte availability and pricing.
A small, senior team — so we treat each crawl space like the only one we're working on this week. Currently accepting new clients across the greater Charlotte metro.
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