24/7 mold response (844) 352-3560
IICRC Certified FirmLicensed IL General Contractor5 stars, 79 reviewsSame-day & 24/7 responseWe bill your insuranceFree estimates

Collinsville, Illinois

Crawl Space Mold Removal in Collinsville, IL

Our IICRC-certified crew handles crawl space mold removal for Collinsville homes and businesses. Same-day response, we bill your insurance, and free estimates.

IICRC certifiedSame-day responseWe bill insuranceFree estimates
Technician in protective gear inspecting mold on floor joists inside a home's crawl space in a Collinsville, Illinois home

Reviews

Rated 5 by Collinsville-area neighbors

5
from 79 reviews

We had a musty smell coming up through the kitchen floor for a while and finally had the crawl space checked. The vapor barrier had torn in a couple spots and mold had spread along several joists. They removed it and were careful around our radon system the whole time.

Ezra Eastwood
O'Fallon, IL · June 30, 2025

Great communication from the first call. They tested the air, handled the removal, and rechecked the space before signing off.

Maya Gallagher
Collinsville, IL · April 25, 2024

Solid service. They removed the bathroom mold completely; only minor delay waiting on the lab results.

Verity Ogilvie
Glen Carbon, IL · March 20, 2024

Our process

Our crawl space mold removal process in Collinsville, IL

Inspect

We check joists, subfloor, vapor barrier condition, and vent function while noting any radon mitigation equipment present.

Contain

The crawl space access is sealed off from the living space above before work begins.

Remove

Affected wood is treated or cleaned; contaminated insulation or debris is bagged and removed.

Address moisture

We note vapor barrier gaps, standing water, or ventilation issues that are keeping the space damp.

Verify

A final moisture check confirms joists and subfloor are dry before we close the job out.

Certified & trusted

Standards we work to, carriers we bill

Better Business Bureau accredited
United States Environmental Protection Agency
State Farm insurance accepted
Allstate insurance accepted
American Family Insurance accepted

Where we work in Collinsville

Collinsville neighborhoods we cover

We cover Collinsville and the surrounding Madison County streets, drying out water damage before mold has a chance to take hold.

CaseyvilleMaryvilleFairview HeightsFairmont CityO'FallonGranite CityEast Saint LouisBelleville
All mold services here

What it costs

Crawl Space Mold Removal cost in Collinsville, IL

Every job is different, so here are the typical Illinois ranges we see. These are planning numbers, not a quote.

Small area
$500 to $1,500

A single moldy spot, a closet, or under a sink. We contain it, remove it, and treat the surface.

One room
$1,500 to $3,500

A bathroom, kitchen, or bedroom with mold on a wall or ceiling, plus the moisture source fixed.

Basement, attic, or crawl space
$2,000 to $6,000

Larger areas that need more containment and drying. Common here after spring rain or a slow leak.

Whole-house or severe
$10,000 and up

Mold across several rooms or after major water damage. We work in phases, room by room.

We give free estimates, so the surest way to know your number is to call. Want a ballpark first? Try our instant mold remediation cost calculator. Filing a claim? We bill your carrier directly, so see our mold insurance claims guide.

Local knowledge

Crawl Space Mold Removal for Collinsville, IL homes

Crawl Space Mold Removal in Collinsville tends to start the same way mold does across Madison County: heavy rain and seasonal flooding pushing water toward foundations and crawl spaces. When that moisture sits for even a day or two, mold takes hold, and that is when homeowners from Caseyville, Maryville, Fairview Heights and the rest of Collinsville call us.

We handle crawl space mold removal for Collinsville the right way. We find and fix the moisture source first, because mold always returns if the water problem is left behind, then we contain the area and remove the mold safely.

Our team is based in Glen Carbon, about 10 minutes from our Glen Carbon base, so we can usually reach a Collinsville home the same day. Our methods follow public guidance from the EPA and the CDC on handling indoor mold safely.

Collinsville specifics

Crawl Space Mold Removal in Collinsville: what actually causes it

Our crew has done Crawl Space Mold Removal across Madison County enough to know how older Collinsville homes with finished basements and low ventilation moves through these homes. For a home in this area, crawl space mold removal starts with finding the moisture, because the water is what feeds the mold. A Collinsville home that needs Crawl Space Mold Removal almost always has a moisture story behind it, and it usually starts with plumbing leaks and poor ventilation. We keep Crawl Space Mold Removal contained and tidy, so the rest of the home near Maryville stays livable while we work.

Older and newer homes alike need Crawl Space Mold Removal, from the newer builds near Fairmont City to the oldest ones in town. Around here, crawl space mold removal tends to settle into the vapor barrier, joists, and subfloor before anyone in the house notices it. By the time a family calls us for Crawl Space Mold Removal, they have usually already seen cool, musty air rising through the floor. We handle Crawl Space Mold Removal for homes from Fairmont City to Maryville and the surrounding area the same careful way.

When we take on Crawl Space Mold Removal, the job takes shape this way:

  • Inspect the affected area and find the moisture feeding the mold
  • Remove moldy material to the IICRC S520 standard
  • HEPA vacuum, clean, and treat the surrounding surfaces
  • Stop the water source so the problem does not come back
  • Contain the space under negative air with HEPA filtration

We are about 10 minutes from our Glen Carbon base, so crawl space mold removal often happens the same day you call.

Good to know

Crawl Space Mold Removal in Collinsville, IL: common questions

How do I know if my crawl space has mold?

The most common sign is a persistent musty smell in the rooms above, especially near the floor. Discoloration on exposed joists, if you can see into the crawl space, is another clear indicator.

Do you install vapor barriers?

We assess vapor barrier condition during inspection and can perform full crawl space encapsulation as a separate service if your space needs more than mold removal alone.

How long does crawl space mold removal take?

Most jobs run one to a few days depending on the size of the space and how much wood is affected. Low clearance can slow the physical work down even on a relatively small area.

Do I need to leave my Collinsville home during the work?

Usually no. We seal the work area under negative air, so most of the Collinsville home stays livable. For larger jobs we will tell you if it is better to step out for a day.

Is it safe to work in a crawl space with a radon system?

Yes, our crew works carefully around existing radon mitigation piping, sealing, and fan units. We won't disturb an active system, and we'll flag anything that looks compromised.

Can crawl space mold affect the air I breathe upstairs?

It can, since air moves between a crawl space and the living area above through gaps, ductwork, and flooring seams more than most people realize. That's part of why persistent odor complaints often trace back down there.

How do you keep the mold from coming back after crawl space mold removal?

We fix the moisture source first, not just the mold, then dry the structure and recheck it. That is what keeps mold from returning to a Collinsville home.

Do you serve Collinsville?

Yes. We cover all of Collinsville, including Caseyville, Maryville, Fairview Heights, and the rest of the Collinsville area. We are based in Glen Carbon, about 10 minutes from our Glen Carbon base, and answer our own phone around the clock.

Nearby

Crawl Space Mold Removal in nearby cities

See all cities

Talk to a certified team now

Need crawl space mold removal in Collinsville, IL?

Call our 24/7 line and talk to the certified crew directly. Same-day response, we bill your insurance, and free estimates.