Knox Crawl Spaces runs the complete under-floor stack: encapsulation from $4,000, drainage from $2,000, floor repair from $1,500, dehumidifiers from $1,200, and mold treatment from $1,500 — every scope preceded by a free photographed inspection with humidity readings.
Crawl Space Encapsulation
The complete seal-and-dry: water managed, Class I liner, closed vents, sized dehumidifier — under the 70% line for good.
Sagging Floor Repair
Sistered joists, adjustable jacks, and new beams for framing the humid years softened.
Crawl Space Drainage
Interior drainage, sumps, and discharge routing for red clay that won't let rain leave.
Crawl Space Dehumidifiers
The drying half of every sealed system — sized, ducted, and drained correctly.
Crawl Space Mold Treatment
Remediation for the growth the humidity fed — plus the drying that keeps it gone.
Cost Guide: East TN Prices by Stage
Full-system and stage pricing, what moves a valley quote, and the itemization that exposes thin installs.
The sequence sells itself
Crawl work fails out of order and lasts in it: water managed before anything seals, wood repaired before anything covers it, growth treated before the space closes, and drying installed so the number holds through August. Our scopes are written in that order with fixed prices per stage — and stages your readings didn't order simply aren't on them.
Service questions
Which service does my crawl actually need?
The readings decide: the free inspection photographs everything, measures humidity and wood moisture, probes framing, and traces water — then the scope lists only the stages your numbers ordered. Dry crawls skip drainage; sound framing skips repair; some crawls just need the seal-and-dry.
Why is everything on this menu about moisture?
Because under an East Tennessee house, moisture is the whole economy — the 70% line feeds the rot, the rot softens the floors, the humidity grows the mold, and the clay funds all of it. Every service here either removes water, repairs its work, or holds the dried number. One enemy, five tools.
Is the inspection genuinely free?
Photographed, measured, written, and free across the corridor — including when the verdict is 'your crawl is actually fine,' which we deliver with the same photos and mild professional envy.
Get a free Knoxville crawl space inspection
Tell us what you're noticing — smells, humidity, floor bounce, a wet crawl — and we'll schedule an inspection with photos of what we find. We reply the same business day.