How to Install a Vapor Barrier in a Crawlspace

Use plastic sheeting to control moisture in your crawlspace.

Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

  • Caulk gun
  • Hammer
  • Tape measure
  • Straightedge
  • Utility knife

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.

  • Rigid insulation
  • Treated 1x4s
  • Caulk
  • 1-1/2 in. rigid insulation
  • 6-mil plastic
  • Tape
  • Landscape fabric stakes