Encapsulation and Sealing
Vapor Barrier Installation
Bare soil gives off water vapor all day. A thick, reinforced vapor barrier over the ground blocks it. We prepare the floor, roll out the liner, overlap and tape the seams and attach it to the walls and piers so it stays in place.
- Best forDirt-floor and gravel-floor crawl spaces
- Typical rhythmOften one to two days
- TeamInstallers who cut, fit and seal liner
- Pairs well withSeam sealing, wall attachment and drainage
What you get
What vapor barrier installation includes
- 1Heavy, reinforced linerThe barrier is thick enough to resist tears from foot traffic.
- 2Overlapped seamsSheets overlap by a generous margin and are taped for a continuous layer.
- 3Wrapped piersThe liner is cut and sealed around piers, pipes and posts.
- 4Clean ground firstDebris and sharp objects are removed so the liner lasts.
How it goes
From the first call to a dry, finished space
- 1Clean and levelWe clear the floor and fix low spots and sharp objects.
- 2Roll out the linerSheets are laid with overlapping seams.
- 3Tape and attachSeams are taped and the liner is fastened at the walls and piers.
- 4Inspect the finishWe check every seam and edge with you.
Good fit when
Is vapor barrier installation right for you?
- The crawl space floor is bare soil
- There is a thin or torn plastic sheet
- Moisture rises from the ground
- You are planning full encapsulation
Questions
About vapor barrier installation
Is the thin plastic I have enough?
Thin builder-grade plastic tears easily and rarely covers the whole floor. A thick, reinforced, fully taped liner does a much better job.
Can I walk on the liner?
Yes, lightly, and a thick liner holds up to occasional visits. For storage or repeated traffic, we suggest platforms or walkways.
Related services
Often paired with this
Vapor Barrier Seam Sealing and Wall AttachmentTaped seams and secure wall edges so the liner works as one sealed layer.See the service 
Crawl Space EncapsulationA sealed, dry, clean crawl space that stops damp air before it reaches your floor.See the service 
Crawl Space Storage PlatformsA raised platform over the liner for dry, tidy storage.See the service Where we work
Find vapor barrier installation near you
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Thinking about vapor barrier installation?
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