
Crawl space encapsulationin Roanoke, VA.
The Crawlspace Guy is a family-owned, locally owned company that encapsulates, waterproofs and dries out crawl spaces for homeowners in Roanoke, Salem and Blacksburg. John does the estimate and leads the work.
Customers followed John here. That is the whole pitch.
Crawl space encapsulation only works when the water problem is understood before anything gets sealed. John walks the space, explains what he sees, and puts the plan in front of you in plain language, so you know what is being done and why before any work starts.
The Crawlspace Guy has been based on Avenham Ave SW in Roanoke, VA since 2020 and works across the Roanoke Valley and out to Blacksburg. John is dedicated to completing the work efficiently and accurately, and often completes extra work as needed at no extra cost. You can learn more about John on our About page.
- Licensed
- Insured
- Free on-site estimates
- 12-month warranty
- Emergency / rush jobs
- Family-owned
- Locally owned
- Residential & commercial

Crawl space and waterproofing services in Roanoke, VA.
Crawl Space Encapsulation
A sealed vapor barrier over the ground and walls of the crawl space, so damp air and ground moisture stop rising into your home.
Crawl space encapsulation details →
Crawl Space Waterproofing
Interior and exterior waterproofing that keeps groundwater and runoff out of the crawl space and the foundation.
Crawl space waterproofing details →
Drainage Systems
French drain installation, sump pumps and grading that move water away from the foundation.
French drain installation →
Moisture & Mold Control
Dehumidification and moisture control that deals with crawl space mold at its cause.
Crawl space mold control →What crawl space encapsulation actually does.
Vented crawl spaces pull outdoor air under the house. In the humid Blue Ridge summers that air is full of moisture, and it condenses on cool ducts, framing and the ground. Encapsulation closes that loop.
Seal the space, then control what is left.
A heavy-duty vapor barrier covers the ground and runs up the walls and piers, seams are sealed, and any liquid water is dealt with first through drainage or a sump pump. A dehumidifier then handles the small amount of humidity that remains. See the full scope on our crawl space encapsulation service page.

A crawl space job is won or lost in the prep.
Cleanup, drainage and the right order of work decide whether encapsulation lasts. We spend the time up front so the finished space stays dry, and we explain each step before we start.
John, in person
The person who walks your crawl space and does the estimate is the person you deal with. You call John directly.
Efficient, accurate work
John is dedicated to completing the work efficiently and accurately, often doing extra work as needed at no extra cost.
A 12-month warranty
The work is backed by a 12-month warranty. Licensed and insured, with emergency and rush jobs available when water will not wait.
Free on-site estimates
Estimates are free, done on site and specific to your crawl space. Curious about the drivers first? Read how much crawl space waterproofing costs.
Why crawl spaces struggle in this part of Virginia.
The Roanoke Valley sits in the Blue Ridge, with warm humid summers and regular rain. Many homes here are older, and plenty were built over vented crawl spaces or partial basements. Ground moisture, gutters that dump beside the foundation and hillside runoff all end up under the floor.
The signs are familiar: a musty smell in the house, floors that feel cold or soft, condensation on ductwork, insulation hanging down, and standing water after a storm. If that sounds like your home, a walk-through is the fastest way to know what is going on.
Musty odor and damp air
Air from a wet crawl space rises into the living area. If the smell is worst near the floor, start below the house.
Standing water or wet soil
Water under the house usually needs drainage work before any barrier goes down. See French drain installation and sump pumps.
Mold, rot or sagging insulation
Learn how we approach crawl space mold without just covering it up.
Recent crawl space work.




From first call to a dry crawl space.
Free on-site estimate
John comes out, looks at the crawl space, and explains what he found and what he recommends in plain language.
Plan & prep
Once you agree on the scope, materials and access get sorted before the work starts.
The work
Cleanup and drainage first, then the vapor barrier, sealing and any dehumidifier.
Final walkthrough
We walk the finished crawl space with you, check the details, and leave the site clean.
Roanoke, Salem, Blacksburg and surrounding Virginia.
Our shop address is 3422 Avenham Ave SW in Roanoke, VA, in the Cave Spring part of town. From there we serve homeowners in Roanoke, Salem and Blacksburg and the communities around them. Not sure your address is in range? Call and ask.
Known by the work.
What customers say on Google. Read more in our reviews, or see the crawl space FAQ.
"John is absolutely amazing! I started working with him when he was at his previous workplace and I will stick with him. My crawlspace was flooded when we moved in, with no sump pump. John went out of his way MORE THAN ONCE to get us taken care of, and he was so flexible with our needs."
"Thank you Cooper!"
Get your crawl space looked at.
Tell us the address, what you are seeing under the house, and when you would like it handled. John will call you back with next steps.