Dry it, seal it, insulate it
Crawl Space Insulation & Encapsulation in Evansville, IN
Stop damp ground and humid summer air from soaking the floor framing, and stop cold floors in winter.
- Free on-site estimates
- Written quote with material, thickness and R-value for every area
- Basements, crawl spaces and attics checked for moisture and leaks first
Crawl Spaces in a Humid River Valley
Crawl space insulation and encapsulation in Evansville fix problems from both seasons. In summer, humid outdoor air flows through open foundation vents and condenses on cooler pipes, ducts and floor framing. Bare dirt adds more moisture. In winter, cold air through the same vents chills the floor above and can freeze pipes. Fiberglass batts between the floor joists get damp, sag and fall. Sealing the crawl space from the outdoors and from the ground, then insulating its walls, deals with both.
What encapsulation includes
A heavy vapor barrier covers the ground, runs up the foundation walls and is sealed at seams and piers. Foundation vents and the access door get sealed. The space then needs a way to stay dry, usually a dehumidifier or a small supply of conditioned air. If water collects after storms, drainage or a sump comes first. HomeGuide's 2026 encapsulation guide lists $3 to $10 per square foot, or $3,000 to $15,000 for a typical job, with a vapor barrier alone at $1,200 to $4,000.
Insulating the walls and rim
In a sealed crawl space, insulation moves to the foundation walls and the rim joist. The Insulation Institute's summary of the 2020 Indiana Residential Code lists R-13 cavity or R-10 continuous for crawl space walls in Climate Zone 4. Closed-cell foam meets the continuous target in about two inches, seals air, and does not absorb water. HomeGuide lists closed-cell on crawl space walls at $2 to $5 per square foot.
Or insulating the floor
If a crawl space stays vented and reasonably dry, insulating the floor above can work. ENERGY STAR recommends R-19 for floors in Zone 4A. Batts need to be held tight to the subfloor and the ducts and pipes protected. In a damp vented crawl space, though, floor insulation tends to fail, so we usually recommend dealing with the moisture first.
Signs it needs attention
- Musty smell indoors, especially in summer
- Sagging, wet or fallen batts
- Sweating ducts or pipes
- Cold floors in winter
- Standing water after rain
- Rust on metal parts, or signs of pests
Old and new crawl spaces
Older Tri-State houses often have low, uneven crawl spaces with brick or stone piers. Newer homes usually have taller, poured walls. Both can be encapsulated; older ones need more prep.
Tell us what you have noticed under the floor, and we will look and send a written plan. Get a free estimate
What Crawl Space Work Covers
The pieces we combine depending on how wet the space is.
Vapor barrier
Heavy liner over the ground and up the walls, sealed.
Vent and door sealing
Closing foundation vents and sealing the access.
Closed-cell walls
Foam to the Zone 4 crawl space wall target.
Rim joist foam
Sealing the band board above the foundation.
Floor insulation option
For crawl spaces that stay vented and dry.
Cleanout
Removing fallen batts and debris first.
Published Crawl Space Costs
| Job | Range and source |
|---|---|
| Crawl space, spray foam | $2,000 to $4,000 (HomeGuide); $1,000 to $5,900 (Fixr) |
| Crawl space encapsulation | $3 to $10 per sq ft, $3,000 to $15,000 (HomeGuide) |
| Crawl space vapor barrier | $1,200 to $4,000 (HomeGuide) |
| Closed-cell on crawl space walls | $2 to $5 per sq ft (HomeGuide) |
| Crawl space vent sealing | $150 to $450 (HomeGuide) |
| Rim joists, spray foam | $2,000 to $2,500 (HomeGuide) |
From HomeGuide's 2026 spray foam and encapsulation guides plus Fixr (2025), national figures. Size, wall height, access, cleanout and drainage set your price. The written estimate is what you pay.
How Crawl Space Work Runs
1. Inspect
Water, wet wood, pests, ducts and insulation checked.
2. Plan
Barrier, sealing, insulation and moisture control priced line by line.
3. Clean out
Debris and failed insulation removed.
4. Seal and insulate
Liner down, vents closed, foam on walls and rim.
5. Review
Walk-through and how to keep it dry.
Why Choose Us for Crawl Space Insulation & Encapsulation
Water first
Drainage problems are flagged before sealing.
Line-item pricing
You choose which pieces to do.
Honest about options
If floor insulation fits better, we say so.
Crawl Space Insulation & Encapsulation Questions
Is encapsulation worth it in Indiana?
In a damp crawl space, usually. It cuts musty air and condensation and warms floors. It depends on how wet the space is now.
Do I need a dehumidifier?
A sealed crawl space needs a way to stay dry: a dehumidifier or conditioned air.
Will this help with frozen pipes?
Sealing vents and insulating the walls keeps the crawl space warmer in winter, which helps protect pipes.
What about termite inspections?
Ask your pest company what they need. Some want an inspection gap at the top of wall insulation.
Crawl Space Insulation & Encapsulation Service Areas
- Spray Foam Insulation in Evansville, IN
- Spray Foam Insulation in Newburgh, IN
- Spray Foam Insulation in Chandler, IN
- Spray Foam Insulation in Boonville, IN
- Spray Foam Insulation in Darmstadt, IN
- Spray Foam Insulation in Henderson, KY
- Spray Foam Insulation in Mount Vernon, IN
- Spray Foam Insulation in Princeton, IN
- Spray Foam Insulation in Haubstadt, IN
- Spray Foam Insulation in Fort Branch, IN
- Spray Foam Insulation in Poseyville, IN
- Spray Foam Insulation in Rockport, IN
- Spray Foam Insulation in Owensboro, KY
Get a Crawl Space Insulation & Encapsulation Estimate
Describe what you have noticed. We will look and send a written plan and price.