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Free crawlspace inspection with photos and moisture readingsOwner-operated12 Northeast Florida counties
Based in Jacksonville, FL
FIRMFOUNDATIONSCRAWLSPACE
Northeast Florida · Free inspection

Dehumidifier in Jacksonville & Northeast Florida

Hold the humidity where wood stays dry.

A sealed crawlspace still needs its air conditioned. A dedicated crawlspace dehumidifier holds relative humidity below the level where mold grows and wood softens, and drains itself so you never think about it.

(252) 773-2346
Moisture meter pressed against a crawlspace floor joist, reading 43.9 percent on the softwood scale

In their words

High humidity makes a mold/mildew air-freshener.

What's included

The actual scope

  • Crawlspace-rated unit sized to the space
  • Continuous drain to sump or exterior
  • Humidity target set and verified
  • Hung or set to stay above any water
  • Annual check available

How it runs

Inspection to finished

  1. Measure the space and current humidity
  2. Written quote
  3. Install and set the target
  4. Verify readings before we leave

Terms, plainly

Free inspection. Photos and moisture readings delivered to you. A written quote with each solution priced on its own, so you can do it all or do it in stages.

How the system works

A sealed, conditioned crawlspace

Not to scale · sized to the space
1Bare Florida ground gives off moisture all year. Half the air on your first floor comes up through it.
2A reinforced vapor barrier covers the floor and runs up the walls, seams taped and fastened.
3Vents get sealed and the walls insulated. A vented crawlspace in Florida just imports humid air.
4A dedicated dehumidifier holds the space dry, which is what stops mold and wood rot from coming back.
5Where water collects, a sump carries it out before it reaches the liner.

Where you live changes the job

Four kinds of ground, four versions of this job

Northeast Florida has four distinct ground conditions, and each one changes how we size and sequence this work. Your town page has the specifics.

  • Barrier islands and the Intracoastal

    Full encapsulation with a sealed liner and dehumidifier, stainless or coated fasteners, and a sump where the water table reaches the crawl floor in storm season.

  • St. Johns River and tidal creek lowlands

    Drainage first: a perimeter French drain and a sump sized for the volume, then a sealed liner and dehumidifier so the wood can finally dry out.

  • Pine flatwoods and hardpan

    Vapor barrier or full encapsulation with a dehumidifier to break the humidity cycle, plus grading, downspout extensions and a French drain where water perches against the foundation.

  • Karst and clay uplands

    Moisture control with a sealed liner and dehumidifier, drainage where clay holds water against the foundation, and an honest assessment of any pier or block movement before anything is sealed.

Not sure if you need this? That's what the inspection is for.

Free inspection anywhere in Northeast Florida, and an honest answer about whether it can wait.

(252) 773-2346