Warmer floors from below
Basement & Crawl Space Insulation in New Philadelphia, OH
Rim joists, foundation walls and crawl spaces sealed and insulated with closed-cell foam.
- No-cost estimates at your home, barn or building
- Written price for each space, with material, thickness and R-value
- Leaks, rot and wiring concerns raised before any insulation goes in
Under the House
Basement and crawl space insulation fixes the cold floors and drafts that start at the foundation. In hillside homes south and east of New Philadelphia, one house can have a full basement, a crawl space under an addition and a porch room on piers. Each needs a different approach.
Rim joists
The rim joist is the band of framing on top of the foundation. In most older homes it is bare. Closed-cell foam sprayed into each bay seals the gaps and adds about R-5 to R-7 per inch, per HomeGuide.
Basement walls
Ohio's Zone 5 table lists R-10 continuous or R-13 cavity for basement walls. Closed-cell foam on dry block or poured walls meets that and keeps new framing off the cold masonry. We look for leaks, cracks and mineral deposits first.
Crawl spaces
We insulate crawl space walls with closed-cell foam, seal vents and the rim, and lay a heavy vapor barrier on the ground. That makes the crawl space part of the conditioned house, warmer and drier, instead of a damp cave under the floor.
Floors over open air
For additions on piers, we spray closed-cell foam on the underside of the floor. Ohio's table lists R-30 for floors over unheated space.
Below-Grade Services
Foundation-level sealing and insulation.
Rim joist foam
Closed-cell in every bay around the perimeter.
Basement wall foam
Closed-cell on dry masonry, ready for finishing.
Crawl space walls
Closed-cell foam with vents sealed.
Vapor barrier
Heavy ground cover, overlapped and taped.
Floors on piers
Foam under additions and porch rooms.
Moisture check
Water, mold and pests checked first.
Basement and Crawl Space Prices
| Job | Range and source |
|---|---|
| Rim joists, spray foam | $2,000 to $2,500 (HomeGuide) |
| Closed-cell, installed | $3.00 to $5.00 per sq ft (HomeGuide) |
| 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) |
National figures from HomeGuide's 2026 guides (spray foam, crawl space encapsulation) and Fixr's 2025 guide. Length of rim, wall height, crawl space size and access set the total. We write down a price after the visit, and that is your price.
How the Work Goes
1. Inspect
Moisture, access, pests and framing checked.
2. Measure
Rim length, wall and crawl space area.
3. Prep
Old batts and debris removed.
4. Install
Foam sprayed, barrier laid, vents sealed.
5. Walkthrough
We show you the finished work.
Basement & Crawl Space Insulation Questions
Is crawl space encapsulation worth it?
In a damp crawl space, sealing and insulating it usually makes floors warmer and the house less musty. HomeGuide lists encapsulation at $3 to $10 per square foot.
Can you insulate a basement that leaks?
Not until the leak is fixed. Foam handles damp air, not running water.
Do I need drywall over basement foam?
In occupied spaces, most foams need a thermal barrier.
What about stone foundations?
We seal the rim and sill above them and check the stone for moisture.
Basement & Crawl Space Insulation Service Areas
- Spray Foam Insulation in New Philadelphia, OH
- Spray Foam Insulation in Dover, OH
- Spray Foam Insulation in Uhrichsville, OH
- Spray Foam Insulation in Dennison, OH
- Spray Foam Insulation in Midvale, OH
- Spray Foam Insulation in Gnadenhutten, OH
- Spray Foam Insulation in Tuscarawas, OH
- Spray Foam Insulation in Newcomerstown, OH
- Spray Foam Insulation in Coshocton, OH
- Spray Foam Insulation in Bowerston, OH
- Spray Foam Insulation in Cadiz, OH
- Spray Foam Insulation in Carrollton, OH
Get a Basement & Crawl Space Insulation Estimate
We look under your house and send a written price.