Crawl Space Encapsulation in Columbia, TN
Close the vents, line the ground and walls, and hold the humidity down so the space stops feeding moisture into the house.
Encapsulation takes the space under the floor out of the weather. A heavy reinforced liner covers the ground and runs up the foundation walls, the vents get closed and sealed, the rim joist is air-sealed, and a dehumidifier keeps the air dry enough that nothing can take hold. Insulation moves from between the floor joists onto the walls, because a sealed space belongs inside the house rather than outside it.
Closing the vents is the part that sounds backwards and is not. Summer air here is warm and heavy with water. Send it into a space where the surfaces are cooler and it drops that water onto the joists, the girders and the underside of the floor. The vents were never drying anything out. They were the delivery route.
What makes the difference between a system that lasts and one that hides a problem is sequence. Sealing a space that still takes on water puts a liner over a puddle. In this county that means understanding whether the water arrives with the rain or with the lake before anything gets closed up.
Typical cost: $6,000 - $17,000 depending on footprint, clearance and what has to happen to the water first
When crawl space encapsulation is the right call
- Water standing under the house, or soil that never quite dries out
- Hardwood cupping, or a floor that has started to feel soft in one spot
- Bloom on the joists, girders or the underside of the subfloor
- Insulation batts sagging out of the joist bays or lying on the ground
- A musty smell that is strongest at the floor registers
Other services
Common questions
How long does it take?
Two to four working days for most houses in Sumner County. The liner goes in quickly. What takes the time is hauling out what is already down there, treating framing that has grown something, and putting in any drainage that has to go first.
Will it help with the smell upstairs?
Usually, and sooner than people expect. A large share of the air in your living space is drawn up out of the crawl space, so a musty hallway is often the crawl space arriving upstairs.
Can I skip the dehumidifier?
Not in this climate. The liner stops moisture coming out of the ground and does nothing about what is already in the air or what comes in each time the hatch opens. Holding the space under about sixty percent relative humidity is what keeps growth from starting.
Does it help with the power bill?
Often, though nobody honest will promise a figure. Sealing the space and moving the insulation to the walls stops the floor acting as the boundary between your house and outdoor air, and the summer effect is usually more noticeable than the winter one.
Get a quote on your crawl space
Call and tell us what is going on with your crawl space and where the property is. You will get a straight answer on what it actually needs, from a licensed contractor working Sumner County.
Call (629) 318-0221