What’s underneath
is holding you up.
We drop into the spaces you’ve been avoiding — damp joists, bare subfloors, standing moisture — and seal them up so your home holds heat the way it should.
What lives
beneath your feet
Most homeowners have never been under their house. Here’s what a cross-section of your floor looks like — and why it matters every month you pay a heating bill.
Your Kitchen Floor
The tile feels cold in January. You assumed it was just winter.
Subfloor Decking
¾″ plywood sitting over bare joists. Moisture wicks up from below. Soft spots forming.
Floor Joists
Dimensional lumber spanning the void. No insulation between them. Every BTU you pay for escapes here.
The Crawl Space
Bare dirt. Open vents letting in humid summer air. Possibly standing water from last spring.
The damage
doesn’t stop.
Every winter the cold comes up through the floor. Every summer the humidity settles in the joists. The crawl space doesn’t know you’ve been ignoring it — it just keeps working on the wood.
Average increase on monthly gas bills for homes with uninsulated crawl spaces vs. encapsulated ones.
Subfloor decking degrades three times faster in humid crawl spaces. Replacement costs $4,000–$12,000.
Up to 40% of indoor air rises from the crawl space. Mold spores, radon, and pest dander come with it.
Most homeowners don't learn about crawl space damage until a home inspection, sale, or structural failure.
Typical progression without intervention
Year 1
Cold floors, mold smell
Year 2–3
Soft spots in subfloor
Year 4–5
Joist rot begins
Year 6+
Structural damage
We climb back up
with the solution.
Four layers of work, done in order, that turn a leaking void into a conditioned part of your home’s thermal envelope. Most jobs complete in one day.
Seal the Vents
We close every foundation vent permanently. Outside air — humid in summer, freezing in winter — stops entering the crawl space.
Encapsulate the Floor
20-mil reinforced vapor barrier sealed to the foundation walls and all penetrations. Standing water and ground moisture are cut off at the source.
Insulate the Joists
Closed-cell spray foam or high-density batts fitted between every joist bay. The thermal envelope closes. Heat stops leaving through your floor.
Condition the Space
A small dehumidifier or supply duct keeps the encapsulated space dry year-round. No more seasonal swings, no more mold season.
“The floors were warm by February. First time in eight years.”
— Dale H., Steeleville IL, 1974 ranch home
Honest work,
honest results.
“We'd been smelling something off in the living room for two winters. The inspector found standing water under the kitchen — the vapor barrier had never been installed. Crawl came out, encapsulated the whole thing in a day. Smell was gone by the weekend.”
Margaret Tolliver
Sparta, IL · 1968 ranch
“First January after we bought the place, our gas bill was $340. After Crawl sealed the vents and sprayed the joists, it dropped to $198 the same month next year. That's real money. Should've done it the first week we moved in.”
Travis & Kendra Bohm
Perryville, MO · 1976 split-level
“I manage eleven rental properties across two counties. Crawl inspected all of them in a week and prioritized which ones needed immediate work. Tenant mold complaints dropped from four in a year to zero. That alone is worth what I paid.”
Carl Weston
Jackson, MO · Mixed portfolio, 1960s–1990s
Schedule your
crawl space inspection.
No obligation. One of our crew leads comes out, goes under, and gives you a plain-language report on what’s down there. Most inspections take 45 minutes.