Retrofits involving Floors and Slabs on Grade

Materials/Tools Needed

  • Spray foam (spray can or two-part) and/or polyurethane sealant
  • 15 mil polyethylene sheet and sheathing tape
  • Tape or sealant compatible with polyethylene and concrete
  • Mesh and thin-set mortar

Homeowner Tip

If installed, protect the polyethylene sheet with carpet or rubber mats if foot traffic is expected.