A damp, open crawl space is often a home’s biggest source of moisture, and Southwest Virginia’s climate makes it worse than most places. We seal the space and controls the humidity, turning a bare, dirt floor into a clean, dry area that protects your home and lowers your energy bills.
CrawlSpace Care encapsulates crawl spaces across the Roanoke Valley and New River Valley.
Schedule FREE Inspection
We inspect your crawl space and give you a written estimate. You decide what happens next. No pressure.
Family-owned since 1994 · 5.0★ Google · BBB A+ · GreenPro & QualityPro Certified · Warrantied · Financing available
Why Southwest Virginia Crawl Spaces Need Encapsulation
If you own a home in the Roanoke or New River Valley, your crawl space faces a few local problems most homeowners never see.
Encapsulation handles all of this at once. It replaces the open, vented, dirt-floored space with a sealed and conditioned one that stays dry.
What Crawl Space Encapsulation Includes
Here is the system our crews install, and why each piece is there:
- Fiberglass-reinforced liner. It covers the floor and runs up the foundation walls, with every seam staked and sealed. We pick the thickness based on your ground conditions. This is what meets Virginia Residential Code R408.3 for a sealed crawl space.
- A dehumidifier sized to your space. A professional-grade unit that pulls moisture out of the air around the clock, with low upkeep and a manufacturer warranty.
- Termite- and moisture-resistant foam board insulation. This goes on the exterior walls and replaces sagging overhead fiberglass, so the space stays conditioned.
- Wood and soil treatment. We treat exposed wood to stop fungus and help preserve it, and treat the soil to control musty odors.
- Sealed vents and gaps. We close them off with expandable foam to keep out humid air and pests.
- A supply air inducer. It feeds a small amount of conditioned air into the space, with a backflow dampener so crawl-space air never reaches your ducts.
- A humidity monitor. You can check conditions in the crawl space without going down there yourself.
- LED lighting. Makes the space easy to see and use.
Electrical outlets are required in the crawl space. We recommend a licensed electrician and can coordinate that work before we start.
Why Southwest Virginia Homeowners Choose CrawlSpace Care
CrawlSpace Care has built its reputation in the Roanoke Valley on honest assessments, professional-grade materials, and work that holds up long after we’ve left the job site. Here’s what sets us apart.
Signs Your Crawl Space Needs Encapsulation
Most people never go down there, so watch for these signs up in the house:
- Cold or sagging floors in winter
- A musty smell that won’t go away
- Visible mold or condensation on framing and ductwork
- Insulation that has fallen, hangs loose, or feels wet
- Standing water after spring and summer storms
- More spiders, ants, or rodents than usual
- Heating and cooling bills that keep climbing
Already have standing water, mold, or rotted wood? That is common in older Roanoke-area homes, and it does not scare us off. We handle the cleanup, mold remediation, and any repairs before we seal, so you can start from wherever your crawl space is today.
The Benefits of Crawl Space Encapsulation
Encapsulating your crawl space is one of the highest-return upgrades you can make to your home. By sealing out the moisture, radon, and pests that thrive under your floor, you protect the structure above and the air your family breathes. Here’s what a properly encapsulated crawl space does for you:
Our Crawl Space Encapsulation Process
Every crawl space is different, so we start by learning yours before we seal a thing. Here’s the step-by-step process our crews follow, from the first inspection to the final walkthrough.
Step 1: Free Inspection and Estimate
We inspect the crawl space, then walk you through a written report and our recommendations. No pressure, just the facts.
Step 2: Preparation
We schedule around you and get to work, clearing out debris and old insulation and raking the soil level.
Step 3: Treatment
We treat exposed wood to stop and prevent fungus, then treat the soil to control musty odors.
Step 4: Seal and Insulation
We seal every vent and gap with expandable foam and install termite- and moisture-resistant board insulation.
Step 5: Liner Installation
We lay the fiberglass-reinforced floor liner, sized to your ground conditions.
Step 6: Condition and Monitor
A humidity monitor lets you check conditions from inside the house, and an air inducer keeps things steady below.
Step 7: Finish
We complete any extra measures we flagged during the inspection.
Crawl Space Service Costs
Every crawl space is different, so pricing varies, but here are real numbers to plan with.
Across Virginia in 2026, encapsulation runs about $5,800 on average, and most projects land between $3,700 and $8,400. Labor in Southwest Virginia tends to cost less than in Northern Virginia. A small, dry space in good shape comes in at the low end. A large space that needs water removal, mold work, or repairs first comes in higher.
Your price depends on size, condition, liner thickness, access, and the repairs involved. We offer financing, and the inspection and written estimate are always free.
See Us for Crawl Space Encapsulation Near You
CrawlSpace Care serves the Roanoke and New River Valleys: Roanoke, Salem, Vinton, Cave Spring, Hollins, Botetourt County (Daleville, Troutville), Bedford, Smith Mountain Lake, Christiansburg, Blacksburg, Radford, and Pulaski.
For a free inspection and estimate, stop by our Roanoke office or call (540 – 345 – 8300) today.
Related Crawl Space Services
Encapsulation often pairs with these services, all done in-house.
Encapsulation | Frequently Asked Questions
Does crawl space encapsulation help with radon in the Roanoke area?
It helps, but it is not the whole answer. Roanoke County and most of Southwest Virginia sit in EPA Radon Zone 1, and radon comes up from the soil under your home. A sealed liner cuts how much soil gas gets in, and it is what a radon-mitigation system attaches to. Encapsulation on its own is not a substitute for radon mitigation, so test your home first. A short-term kit is cheap, or you can hire a certified pro. If the reading is 4.0 pCi/L or higher, mitigation is the next step.
Will a sealed crawl space really help with termites?
It helps by taking away what termites need. Virginia is a moderate-to-heavy termite zone, and Eastern subterranean termites rely on soil moisture and damp wood. Drying the space and adding our termite-resistant Bora Foam makes it much less inviting. Encapsulation is not a termite treatment on its own, but as the crawl-space side of Bug Man Exterminating, we can handle the moisture and the pests together.
How long does encapsulation take, and do I need to leave home?
Most homes take anywhere from one day to a few, depending on size and condition. The work happens under the house, so you can stay home while we are there, and we clean up when we finish. You will get a specific timeline with your estimate.
Do you serve Christiansburg, Blacksburg, and the New River Valley?
Yes. Bug Man moved into the New River Valley in 2009, and we regularly work in Christiansburg, Blacksburg, Radford, and Pulaski, along with the whole Roanoke Valley.
Is encapsulation worth it, or should I just add a vapor barrier?
A basic vapor barrier can help, but in our wet, humid climate it usually is not enough by itself. If the vents stay open and nothing manages the humidity, the space stays damp. Full encapsulation, meaning the liner, sealed vents, a dehumidifier, and insulation together, is what keeps a crawl space here dry for the long haul. We will tell you at the inspection which one your home needs.
What warranty comes with the work, and is the inspection free?
Every encapsulation comes with a 1-Year Workmanship Warranty on materials, installation, and labor, plus a 5-Year Dehumidifier Warranty with full replacement on the unit. Our Annual Care Plan can extend a Lifetime Structure Warranty. The inspection and estimate are free, with no obligation.