Reviewed June 7, 2026

Reference

Foundation and water damage glossary

Use this glossary to understand estimates, inspection notes, and cleanup scopes.

Quick answer

Foundation and Water Damage Glossary

Plain-language definitions for common foundation, crawl space, and water damage terms.

Water damage terms

These terms show up in mitigation estimates, insurance notes, and drying reports.

  • mitigation: cleanup and drying before rebuild
  • remediation: removal or treatment of contamination
  • gray water: water with some contamination risk
  • black water: sewage or floodwater risk
  • dry standard: target moisture level after drying

Foundation terms

These terms show up in repair proposals, engineer letters, and crawl space inspections.

  • pier: deep support for settlement
  • joist: floor framing member
  • sill plate: wood at the top of a foundation wall
  • hydrostatic pressure: water pressure against walls
  • efflorescence: white mineral residue from moisture

Crawl space terms

These terms help separate moisture control, structural repair, and air-quality concerns.

  • vapor barrier: ground moisture cover
  • encapsulation: sealed crawl space system
  • dehumidifier: humidity control equipment
  • subfloor: floor layer above joists
  • negative grading: soil sloping toward the home

Note

Definitions are simplified for homeowner planning.

Related pages

More guides