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Free crawlspace inspection with photos and moisture readingsOwner-operated12 Northeast Florida counties
Based in Jacksonville, FL
FIRMFOUNDATIONSCRAWLSPACE
Core service area · County seat: Jacksonville

Crawl Space Services in Duval County, FL

The metro core. Beaches on the east, the river through the middle, pine flatwoods everywhere else, and housing stock from 1920s pier-and-beam in Riverside to 2010s slab-adjacent crawlspaces on the Northside.

(252) 773-2346
Encapsulated crawlspace with a sealed white liner across the floor and up the foundation walls

The ground in Duval County

3 kinds of ground inside one county

  • St. Johns River and tidal creek lowlands

    The water table here moves with the river. In a wet season it can sit right at the level of the crawlspace floor, and a tropical system or a nor’easter can put it above. Many of these are older pier-and-beam homes in established neighborhoods, so the wood has already had decades of humidity working on it. Floods here are slow and repeated rather than sudden.

    What we install here

    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

    Most of the region sits on this. The surface is sand, but a foot or two down there is a dense, cemented layer called hardpan, and water perches on top of it, exactly at crawlspace level. That is why the yard ponds after every summer storm and why the ground under a house here stays damp for weeks. Ninety-percent humidity all summer does the rest.

    What we install here

    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.

  • Barrier islands and the Intracoastal

    Sand drains fast, which sounds good until you remember the water table underneath is only a few feet below your crawlspace. King tides, tropical rain and storm surge push it up from below rather than in from the side. Salt air corrodes duct straps, hangers and nails, and constant sea-breeze humidity means a vented crawlspace out here is never dry, even in a drought.

    What we install here

    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.

Dry crawlspace in Duval County. Let’s start.

Free inspection, photos and moisture readings you keep, and a written quote with every option priced on its own.

(252) 773-2346