Home / Water damage and mold / Guides
Crawl space encapsulation: what drives the cost
Encapsulation is a liner, sealed seams and a way to dry the air. What it costs depends on what has to be fixed underneath first.
Call (844) 817-0274Connects you with a local water damage and mold provider
Calls are answered by an independent provider that serves your ZIP code. You decide whether to hire.
The short version
- What sets the price
- The size of the space, the repairs needed first and the drying equipment.
- Fix first
- Standing water, drainage and any mold on the framing.
- Compare quotes on
- Liner thickness, drainage, dehumidifier and what is done about existing damage.
A quote should spell out
- The square footage and the liner thickness.
- How seams, piers and walls are sealed.
- Whether a dehumidifier and drain are included.
- What is done about mold and wet insulation first.
What pushes the price up
- Standing water that needs drainage or a sump pump.
- Mold cleanup on joists and subfloor.
- Low clearance that slows the work.
- Removing old insulation and debris.
What the work includes
- The linerA heavy plastic barrier over the ground and up the walls, with taped seams.
- DrainageIf water enters the space, it needs a path out: a drain, a sump pump or grading outside.
- Drying the airA dehumidifier or conditioned air keeps humidity down once the space is sealed.
- What comes firstThe EPA's rule applies: fix the water problem, or mold returns under the new liner.
How the job usually goes
- Inspection, with moisture readings and photographs.
- Drainage and mold work first.
- Liner installed and sealed.
- Dehumidifier set up and humidity checked.
This page gives no dollar figures on purpose. Encapsulation quotes for the same house vary widely, mostly on what is included. Ask each company for an itemized scope.
Related guides
Mold in the crawl space
Mold remediation: what drives the cost
Water damage restoration: what drives the costSources
- US Environmental Protection Agency: mold, moisture and your home