Home Garden
# Home & Garden >> Building & Remodeling >> Floors

How to Lay Hardiboard Over a Hardwood Floor

Hardiboard, or cement board, is a form of underlayment made from cement and mesh. This provides a stronger, more moisture-resistant surface than you can get from a traditional plywood underlayment. The Hardiboard is especially useful for laying tile floors, which can crack if the underlayment beneath them moves at all. See you local home improvement store for the right mortar to use with Hardiboard.

Things You'll Need

  • Floor cleanser
  • Scrub brush
  • Mop
  • Half-inch Hardiboard (cement board)
  • Pencil
  • Thinset (mortar)
  • Notched trowel
  • 1 1/4 drywall screws (galvanized)
  • Screw gun
  • Utility knife
  • Mesh drywall tape
  • Drywall knife
Show More

Instructions

    • 1

      Clean the hardwood floor thoroughly with floor cleanser, using a scrub brush. Rinse the cleanser with a mop. Let it dry for 48 hours.

    • 2

      Lay a piece of Hardiboard on the floor, in one corner. Trace around the perimeter of it with a pencil. Pick up the board.

    • 3

      Spread thinset onto the marked area with notched trowel, coating it all in roughly ¼-inch layer.

    • 4

      Drive 1 1/4 galvanized drywall screws through the Hardiboard, straight down, in a grid pattern every six inches, using your screw gun.

    • 5

      Lay the next sheet of Hardiboard off the end of the first, securing it in the same way, with mortar and screws. Repeat, laying the sheets off each other end to end. Cut the last piece to fit, scoring it with a utility knife and breaking it in two to fit.

    • 6

      Lay the next course of Hardiboards starting from the opposite end where you started the first course, so the ends of the boards are staggered and there are no four-way intersections. Cut the final board as needed.

    • 7

      Repeat, covering the whole floor.

    • 8

      Lay drywall tape over the seams of the boards, pressing it firmly over each line. Spread thinset over each strip of tape, just enough to cover it. Flatten the mortar completely.

    • 9

      Let the mortar dry for 24 hours. Tile the floor.

Previous:

Next:

Floors
  1. How to Lay Hardwood Floor in a Contrasting Direction
  2. How to Lay Vinyl Over a Sagging Wood Floor
  3. How to Place a Wood Floor Over Tile
  4. How to Lay Brick Over Existing Tile
  5. How to Lay a Floating Wood Floor Over the Crown in a Concrete Floor
  6. How to Lay Subfloor on an Uneven Floor
  7. How to Attach a Stair Post to a Hardwood Floor
  8. How to Lay a Concrete Floor Over a Gravel Basement
  9. How to Lay a Domestic Concrete Floor
  10. How to Lay a Split Brick Floor
  11. How to Lay Out a Hardwood Floor in an L-Shaped Room
  12. How to Lay Porcelain Tile Over a Concrete Floor

Home Garden © https://www.98905.com