Encapsulation and Sealing
Vented-to-Closed Crawl Space Conversion
Converting a vented crawl space to a closed one means sealing the vents, covering the ground, insulating the walls and adding humidity control. The space stays dry and stable all year, instead of swinging with the weather.
- Best forVented crawl spaces with damp air or cold floors
- Typical rhythmOften two to four days
- TeamCrews that handle the whole conversion
- Pairs well withDrainage and a dehumidifier
What you get
What vented-to-closed crawl space conversion includes
- 1Whole-system approachLiner, walls, vents and humidity control are planned together.
- 2Fewer swingsTemperature and humidity stay steadier through the year.
- 3Healthier airLess damp, musty air rises into the home.
- 4Planned for your climateWe adjust the plan to local humidity and soil.
How it goes
From the first call to a dry, finished space
- 1Assess the spaceWe measure moisture and check drainage.
- 2Fix water firstDrainage and grading problems are handled.
- 3Close and line the spaceVents are sealed and the liner and wall insulation go in.
- 4Add humidity controlA dehumidifier and sensor complete the system.
Good fit when
Is vented-to-closed crawl space conversion right for you?
- Your crawl space has vents and a dirt floor
- Summers bring damp air and winters bring cold floors
- You want a long-term fix rather than patches
- Mold keeps coming back
Questions
About vented-to-closed crawl space conversion
Is conversion allowed by code?
Closed crawl spaces are widely accepted, and local rules vary. We plan the work to meet the requirements that apply and explain them to you.
Will it change how my house works?
It usually makes the floors warmer and the air cleaner. We explain the changes, such as a dehumidifier running quietly below, before we start.
Related services
Often paired with this
Crawl Space EncapsulationA sealed, dry, clean crawl space that stops damp air before it reaches your floor.See the service 
Foundation Vent SealingClosed vents that stop humid air from flowing into the crawl space.See the service 
Crawl Space Dehumidifier InstallationA crawl space dehumidifier, sized, drained and set to keep humidity down.See the service Where we work
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Thinking about vented-to-closed crawl space conversion?
Call or text, or send the form. Tell us what you have noticed and we will tell you how we would handle it.