Home / Crawlspace encapsulation
Lafayette & West Lafayette, Indiana
Crawlspace encapsulation in Lafayette, IN
A musty smell in the closet, cold floors in winter and damp insulation hanging from the joists usually start in the same place: an open, vented crawlspace pulling humid Indiana air under your home. Encapsulation seals it off and keeps it dry year-round.
- Free moisture readings & photos
- Written price before work
- Bonded & insured
Why Lafayette crawlspaces get wet
Humid summers, clay soil and open vents
Many homes around Lafayette, West Lafayette and the surrounding towns were built with vented crawlspaces and a bare dirt or thin plastic floor. The idea was that outside air would dry the space. In practice, warm, humid summer air flows in, meets the cooler ground and foundation walls, and condenses.
Tippecanoe County's clay-heavy soil holds water close to the foundation after rain and snowmelt, so moisture also wicks up from the ground and through block walls. Once crawlspace humidity stays above about 60%, mold, wood rot, dust mites and pests move in.
Air rises through a house, so what's in the crawlspace doesn't stay there. That's why a damp crawlspace often shows up upstairs first, as a smell, a humid feel or allergy symptoms.
Signs your crawlspace needs attention
- Musty or earthy smell inside the house
- Cold floors in winter, a humid feel in summer
- Fiberglass insulation sagging or falling from the joists
- White, black or green growth on joists or subfloor
- Standing water or wet soil after rain
- Rusty ductwork, condensation on pipes
- Mice, insects or other pests under the house
What's included
What a Basepoint encapsulation includes
Every crawlspace is different, so your written plan lists exactly what yours needs. A typical encapsulation covers these steps.
1. Clean-out
Remove wet or fallen insulation, old plastic and debris so the barrier goes down on a clean, level surface.
2. Mold treatment
Treat joists and subfloor where we find growth, before anything is sealed in.
3. Drainage, if needed
If water collects in the crawlspace, a perimeter drain and sump pump come first. Sealing over standing water just hides the problem.
4. Reinforced vapor barrier
A heavy-duty, reinforced liner across the floor and up the walls, with sealed, taped seams and secured edges.
5. Vent and rim-joist sealing
Close off foundation vents and seal the rim joist so humid outside air stops getting in.
6. Crawlspace dehumidifier
A dedicated, drain-to-the-outside dehumidifier keeps relative humidity in the safe range all year.
Encapsulation vs. a vapor barrier
Why a sheet of plastic isn't enough
A basic vapor barrier covers the dirt floor. It helps, but humid air still comes in through the vents and rim joist, and moisture still moves through the walls.
Encapsulation treats the crawlspace as part of the house: the floor, walls and openings are all sealed, and the air is dehumidified. That's what keeps the wood dry, the insulation in place and the smell out of your living space.
How long does it take?
Most encapsulations are done in one to three days. We'll need access to the crawlspace and an outdoor outlet, and we protect your yard and floors and clean up every day.
What does it cost?
Price depends on the crawlspace's square footage, height and access, whether there's standing water, and how much old insulation has to come out. We measure during the free inspection and give you a written price with options. Ask about payment plans when you get your estimate.
Often paired with
- Exterior drainage: downspout extensions and regrading keep water away from the walls in the first place
- Floor support: adjustable steel posts or sistered joists where moisture has already weakened the wood
- Foundation repair: for cracked or bowing block walls we find during the inspection
Questions
Crawlspace encapsulation questions
Don't see yours? Call or text and ask. There's no charge for advice.
Can't I just close my crawlspace vents?
Closing vents alone often traps moisture rather than removing it. A dry crawlspace needs the ground covered, the walls and vents sealed, and the air dehumidified. That's what encapsulation does.
How long does crawlspace encapsulation take?
Most encapsulations are done in one to three days, depending on the size of the crawlspace, how much old insulation or debris has to come out, and whether drainage or mold treatment is needed first.
How much does crawlspace encapsulation cost?
It depends on square footage, crawlspace height and access, whether there is standing water, and how much insulation and debris must be removed. We measure during the free inspection and give you a written price with options before any work starts.
Do I need a dehumidifier after encapsulation?
In most Indiana homes, yes. Sealing stops new moisture from coming in, and a crawlspace dehumidifier keeps relative humidity below the level where mold and wood rot start.
Is encapsulation worth it if I'm selling my home?
A documented, warrantied encapsulation is much easier to explain to buyers and home inspectors than a damp crawlspace. We provide paperwork you can hand to a buyer.
Let's take a look underneath.
Free crawlspace inspection, written plan, no pressure. Serving Lafayette, West Lafayette, Battle Ground, Dayton, Frankfort, Delphi, Monticello, Crawfordsville and the surrounding counties.