Crawl Space Services in St. Johns County, FL
Fast-growing and very wet. The Intracoastal on one side, the St. Johns on the other, and a lot of newer homes built on ground that was drained for construction and has been trying to fill back in since.
Towns we cover in St. Johns County
15 towns, each with its own page
Each town has its own page with the ground under it, what goes wrong there, and what we install to fix it.
The ground in St. Johns County
3 kinds of ground inside one county
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 hereFull 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
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 hereDrainage 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 hereVapor 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.
Everything we do in St. Johns County
Eight services, one owner responsible, all out of Jacksonville.
- Vapor BarrierThe floor of a dry crawlspace.
- Crawl Space EncapsulationSeal it, condition it, forget about it.
- French DrainGive the water somewhere else to go.
- Sump PumpMove the water out before it does damage.
- ExclusionKeep the critters out for good.
- InsulationStop paying to cool the ground.
- Crawl Space Clean-OutStart from clean.
- DehumidifierHold the humidity where wood stays dry.
Other counties we cover
Same crew, same phone number.
Dry crawlspace in St. Johns County. Let’s start.
Free inspection, photos and moisture readings you keep, and a written quote with every option priced on its own.