Most Pocono crawl spaces fail for the same reason: cold vented air meets warm humid air from the ground and condenses on every joist, rim, and subfloor above. Over 3 to 5 years that moisture rots band joists, grows mold on floor framing, and buckles hardwood floors above. Encapsulation seals the crawl space from the ground, the outside air, and the humid summer air by installing a 20-mil reinforced white vapor barrier across the floor and up the walls, taping and mechanically fastening it, sealing every vent, and running a small dedicated dehumidifier that holds the space at 50 percent relative humidity year round. The crawl becomes a sealed conditioned zone, not an exterior space.
The 20-mil liner matters because 6-mil poly from the hardware store tears the first time anyone crawls on it and fails under any standing water. A reinforced 20-mil liner holds a plumber on his knees and survives decades. We overlap seams 12 inches, tape with 4-inch poly tape, and mechanically anchor the perimeter to the wall 18 inches up with termination bar and butyl sealant. Every pier gets wrapped and taped. The vapor barrier is the structural element of the system. Everything else is support.
On Pocono crawl spaces we usually find standing water or active seepage on the dirt floor, especially on homes in the Delaware River floodplain near Shawnee on Delaware or in the valley lowlands in Marshalls Creek and Bushkill. Water on the ground needs a drainage layer before the vapor barrier can go down. We dig a shallow 6-inch perimeter trench, lay perforated drain pipe in washed stone, tie it to a sealed crawl-space sump pump, then lay the vapor barrier over the top. The sump pump is a sealed-cover design, not an open-pit basement pump, because an open pit lets humidity back into the sealed space.
Insulation choice is the other place cheap contractors cut corners. Fiberglass batts between floor joists above the crawl are the standard builder spec and they are wrong for a sealed crawl because they trap moisture against the subfloor and grow mold. The right call is 2 inches of closed-cell spray foam on the perimeter walls and band joists, which seals and insulates in one step at an R value of about 13. We spray only the perimeter, not between the joists overhead, because the sealed and conditioned crawl becomes part of the building envelope. Dehumidifier runs on a hygrostat, drain line runs to the sump.
What we handle
Full Crawl Space Encapsulation
20-mil reinforced vapor barrier, sealed vents, closed-cell perimeter insulation, and dedicated dehumidifier. The complete sealed conditioned zone system.
Crawl Space Drainage and Sump
Perimeter drain tile and sealed-cover sump pump installed before the vapor barrier for crawls with standing water or active ground seepage.
Crawl Space Dehumidifier Install
AprilAire 1830 or Santa Fe Advance sized to the square footage, holds the sealed crawl at 50 percent relative humidity year round.
Mold Treatment and Joist Cleaning
Pre-encapsulation treatment of existing mold on floor joists with EPA-registered antimicrobial before the liner goes down.
Emergency Crawl Space Water Removal
Same-day pump-out call for a flooded crawl space during spring snowmelt or a sudden pipe break. Includes drying equipment and source diagnosis.
Rim Joist and Band Joist Spray Foam
2 inches of closed-cell spray foam on the rim joist and band joist to R-13, seals the single biggest air leak in a Pocono crawl space.
How the job goes
1. On-Site Assessment
We crawl the full space, map standing water or seepage, check band joist condition, test moisture in the floor framing above, and photograph everything. 45 to 60 minute visit.
2. Written Scope and Quote
You see the system components on paper: drainage plan if needed, vapor barrier square footage, dehumidifier model, insulation square footage, total installed price, warranty terms.
3. Cleanout and Drainage
Day one. Haul out debris, old insulation, and vapor barrier scraps. Trench perimeter drain if needed, set sealed sump, tie to exterior discharge. Treat any existing mold.
4. Vapor Barrier and Insulation
Day two. Roll out 20-mil liner, tape all seams, anchor to walls at 18 inches with termination bar. Spray 2 inches closed-cell foam on perimeter walls and rim joist. Seal all vents.
5. Dehumidifier and Commissioning
Day three. Install dehumidifier on a hygrostat, run drain to the sump, run the system for 48 hours, verify relative humidity holds at 50 percent before we hand it over.
What's included
- Full crawl space assessment with moisture meter and mold inspection
- 20-mil reinforced white vapor barrier across floor and up walls 18 inches
- Butyl termination bar anchoring at the wall plus 4-inch poly seam tape
- Sealed and taped perimeter pier wrap
- 2 inches closed-cell spray foam on perimeter walls and rim joist
- Sealed foundation vent covers on all existing vents
- Dedicated dehumidifier sized to square footage, condensate line to sump
- Sealed-cover sump pump if drainage is included in scope
- Pre-encapsulation antimicrobial treatment on existing mold
- Written workmanship warranty and 25-year vapor barrier product warranty
What it costs
Crawl space encapsulation in East Stroudsburg runs $5,500 to $14,000. Drainage and sump add $1,500 to $4,000 for crawls with standing water.
| Job | Typical price | Notes |
|---|---|---|
| Full Encapsulation (up to 1,200 sq ft) | $5,500, $9,500 | Vapor barrier, insulation, vent seals, and dehumidifier for a standard Pocono crawl. |
| Full Encapsulation (1,200 to 2,000 sq ft) | $8,500, $14,000 | Larger crawls with multiple access doors, additional dehumidifier capacity needed. |
| Drainage and Sealed Sump Add-On | $1,500, $4,000 | Perimeter drain tile tied to sealed-cover sump pump, required when standing water is present. |
| Dehumidifier Only | $1,800, $3,200 | AprilAire 1830 at the low end, Santa Fe Advance 90 at the top for larger crawls. |
| Rim Joist Spray Foam | $1,200, $2,800 | 2 inches closed-cell on rim and band joist, seals the single biggest air leak. |
| Free On-Site Assessment | Free | Full crawl inspection with moisture readings and written scope on the spot. |
Ranges are typical for Crawl Space Encapsulation jobs in East Stroudsburg and confirmed with an exact written quote before any work starts.