What crawl space encapsulation includes.
Crawl space encapsulation turns a damp, vented, dirt-floor space into a sealed one. A heavy-duty vapor barrier covers the ground and climbs the walls and piers, the seams are sealed, and the space is dried and kept dry. Moisture from the soil can no longer rise into the framing, the insulation and the air you breathe upstairs.
In the Roanoke Valley, where summers are humid and the ground stays wet after a good rain, that sealed layer makes a real difference to how a house smells, feels and holds up.
Signs your crawl space needs encapsulation.
A musty smell indoors
Air moves upward through a house. If the smell is strongest near the floor or in closets on the ground level, the crawl space is the first place to look.
Cold, soft or bouncy floors
Damp framing and subfloor lose strength over time, and wet insulation stops insulating. Floors are often where homeowners first notice a problem.
Wet insulation, bare soil, open vents
Insulation sagging between joists, exposed dirt and vents that pull humid summer air under the house all point to a space that should be sealed.
Our crawl space encapsulation process, step by step.
Clear and clean the space
Debris, old torn plastic and damaged insulation come out first so the liner lays on a clean, level surface.
Deal with liquid water
If water is entering, we address it before sealing anything, usually with drainage or a sump pump. Sealing over a wet problem only hides it. See our drainage systems work.
Install and seal the vapor barrier
The liner covers the floor and runs up the walls and piers, with overlapped, sealed seams and sealed penetrations for pipes and posts.
Control the air that remains
A dehumidifier holds humidity down in the sealed space. We cover that under moisture and mold control.
Walk it with you
We show you the finished space, point out the details, and explain what to check over time.
What decides the price and the schedule.
Every crawl space is different, so we quote each one after seeing it. The biggest drivers are how much space there is, the condition it is in, how much water needs managing, and whether you add a sump pump or dehumidifier. Our page on crawl space encapsulation cost walks through the factors, and the guide to how long crawl space encapsulation takes covers scheduling.
Owner-led
John looks at the space and leads the work, so what you were told is what gets done.
Extra work handled
When something extra needs doing to finish the job properly, John often takes care of it at no extra cost. The work carries a 12-month warranty.
Crawl space encapsulation near Roanoke, Salem and Blacksburg.
We install in Roanoke, Salem and Blacksburg and the surrounding communities. If your home has standing water or the soil never dries, pair encapsulation with crawl space waterproofing. To keep a finished space in shape, see crawl space inspection and maintenance.
Call John
Phone (540) 494-3541, Monday to Friday, 8am to 5pm, or send the details online.
Common questions about this service
Do I need encapsulation if my crawl space has vents?
Will encapsulation stop water coming into the crawl space?
Can I stay home while the work is done?
Do I still need a dehumidifier after encapsulation?
How do I get a price for crawl space encapsulation?
Ready for crawl space encapsulation?
Tell us the address and what you are seeing under the house. John will look at the space and give you a free on-site estimate.