Colorado Springs sits in a semi-arid high-plains climate where cold winters bring freeze-thaw cycles that push moisture into crawlspaces of homes built before the 1990s in neighborhoods like Old Colorado City and Broadmoor. Encapsulation uses 20-mil reinforced vapor barriers sealed to foundation walls and piers, paired with dehumidification sized for the volume and airflow patterns found in these older pier-and-beam structures. Without proper sealing at rim joists and penetrations, radon and soil gases common in El Paso County can still migrate upward.
Many homes near Manitou Springs and in Briargate sit on sloped lots where snowmelt and occasional heavy summer rains drain toward foundations. Encapsulation here requires French-drain integration or exterior grading checks before the liner goes down, because trapped water under the barrier creates hydrostatic pressure that lifts seams. Technicians also address insulation on the underside of the floor decking, since uninsulated crawlspaces allow cold air to raise heating costs during the long winter months.
Code requirements in Colorado Springs reference the 2018 International Residential Code with local amendments for vapor retarders and combustion air. Encapsulation projects must maintain access panels for HVAC equipment and electrical junctions while ensuring the barrier does not block foundation vents that still serve structural drying purposes in some older Rockrimmon properties.
Homeowners in Security-Widefield and Fountain often discover that prior partial repairs left gaps at the perimeter, allowing rodents and humid air to enter. Full encapsulation includes sealing these edges with mastic and termination bars rated for below-grade use, then verifying negative pressure with a blower door to confirm the living space stays isolated from the crawlspace environment.
Technician insight
In Colorado Springs the thing that catches most people out with crawlspace encapsulation is the freeze-thaw heave on older foundations in Old Colorado City; if you don't address the exterior grade first, the liner ends up acting like a swimming pool liner the next spring melt.
Broadmoor Home With Persistent Winter Moisture
Homeowner noticed musty air and higher heating bills in a 1960s Broadmoor house after heavy December snow. Inspection found saturated soil against the north foundation wall and gaps in an old partial liner. Crew regraded the exterior, installed a sealed sump, and completed full 20-mil encapsulation with dehumidification. Humidity stabilized at 48 percent and the living space above stayed dry through the following winter.
Crawlspace Encapsulation Services We Offer
✓Vapor Barrier Installation
Installs heavy-duty reinforced liners sealed to walls and piers to block ground moisture in El Paso County crawlspaces.
✓Crawlspace Insulation Upgrade
Adds closed-cell spray foam or rigid board to rim joists and floor decking to reduce heat loss during Colorado Springs winters.
✓Dehumidification System Installation
Places and ducts standalone dehumidifiers sized for the crawlspace volume to maintain 45-55 percent relative humidity year-round.
✓Sump Pump Integration
Adds or upgrades sump pumps with sealed lids and battery backup to handle seasonal snowmelt and storm drainage near Cheyenne Mountain slopes.
✓Pest and Rodent Sealing
Closes gaps around utility penetrations and foundation vents with metal mesh and caulk to prevent entry after encapsulation.
✓Radon Mitigation Coordination
Works with certified radon contractors to route vent piping through the new vapor barrier without compromising the seal.
Crawlspace Encapsulation Cost in Colorado Springs, CO
| Service | Typical Range | What Affects It |
|---|---|---|
| Standard Encapsulation (under 1,000 sq ft) | $3,200–$4,800 | Flat lots in Briargate with good access |
| Larger Or Sloped Lot Encapsulation | $4,900–$7,500 | Includes exterior grading or French drain tie-in near Manitou Springs |
| Dehumidifier Add-On | $850–$1,400 | Unit plus electrical and drain line |
| Sump Pump Upgrade | $1,100–$1,900 | Sealed lid, battery backup, and discharge line |
Ranges are typical for Colorado Springs, CO and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Assessment
Measure crawlspace dimensions, inspect for standing water, and check foundation condition in neighborhoods such as Broadmoor or Briargate.
- 2
Moisture Control Prep
Address active leaks, grade exterior soil away from the foundation, and install any needed drainage before liner placement.
- 3
Barrier And Sealing
Roll out 20-mil liner, seal all seams and wall terminations, and encapsulate piers and HVAC equipment.
- 4
System Installation
Mount dehumidifier, connect drains, and verify airflow and humidity targets with data loggers.
- 5
Final Verification
Confirm access panels remain usable, test for air leakage, and provide homeowner walkthrough of the finished space.
Pricing
Most crawlspace encapsulation projects in Colorado Springs range from several thousand dollars depending on square footage, access difficulty, and whether drainage work is required.