Systems

Two ways to stop moisture at the source.

Both start with a ground vapor barrier sealed at the seams, the piers and the penetrations. What changes is how far up the walls and piers it goes.

A rendering of the base of a wrapped foundation pier, its vertical seam and the flap where the wrap meets the floor sheet both sealed with tape, gravel visible at the edge of the frame

The two systems

12 to 18 in

Partial: up the wall

5 in

Full: below the joists

Illustration

What is included

The sheet is the same. The coverage and the detailing are not.

Both start with the floor: the ground cleared, the sheet laid to full coverage, seams lapped and sealed, every pier wrapped and every penetration collared. Partial encapsulation stops 12 to 18 inches up the walls; full encapsulation goes on to 5 inches below the joists.

Fig. 1 12 to 18 in up the wall

12 to 18 in

Partial encapsulation

The floor and the lower walls.

  • The whole floor lined, seams lapped and sealed
  • Walls covered 12 to 18 inches up, mechanically fastened
  • Every pier wrapped and every penetration collared
  • Before-and-after photographs

12 mil. Reinforced polyethylene.

Fig. 2 To 5 in below the joists

5 in below the joists

Full encapsulation

The floor, the walls and the piers, up to the framing.

  • The whole floor lined, seams lapped and sealed
  • Walls lined to 5 inches below the floor joists
  • Piers wrapped to the same height
  • Vents covered where full encapsulation needs it
  • Before-and-after photographs

Heavy-duty reinforced liner.

Which one your crawlspace needs is decided at the inspection.

See how the price is set

Free inspection

Book your free inspection.

About an hour under the house, then one fixed price. Texts are answered right away.