You can do it but for me its very ify. I’ll only put self leveling compound over plywood if the floor has zero to no flex, give, or movement in the subfloor. Look at it this way if your floor starts shifting or moves every time you walk on it your leveler will flex and start to crack and break.

Can you use self-leveling compound on plywood?

You can also use self-leveling concrete on plywood as an underlayment for other types of floor coverings, such as carpet or tile. Whether you’re a homeowner, contractor, or property manager, self-leveling concrete is a cost-effective, durable option for replacing floors that are cracked, uneven, or worn.

How do you bond cement board to plywood?

How to Install a Cement Backer Board Over a Plywood Subfloor in the Bathroom

  1. Dry-Lay the Floor. Lay down full sheets of backer board where they will fit first. …
  2. Take Your Measurements. …
  3. Make Your Cuts. …
  4. Use a Keyhole Saw. …
  5. Mix Your Thinset Mortar. …
  6. Apply the Thinset. …
  7. Nail the Concrete Board Down. …
  8. Repeat to Cover the Floor.

Do you have to put thinset between subfloor and cement board?

Not only is thinset a critical component underneath cement board but the other critical component is the fasteners. And you won’t have the fasteners if you are trying to install it over concrete. On the bright side, there are some options for concrete subfloors.

Can you put cement board over plywood?

If you’re working over a wood subfloor, cement board is the right choice for your tile base. No matter what you’re told at a home center, it’s not a good idea to install tile directly over plywood, especially in a damp area like a bathroom.

Can you put floor leveler over backer board?

Look at it this way if your floor starts shifting or moves every time you walk on it your leveler will flex and start to crack and break. If you are putting backerboard over the leveler then that is an easy answer: all the screws will just bust the leveler and will not work!

What should I use to level plywood subfloor?

Use an underlayment, floor leveler or floor patch product to fix low spots in a wood or concrete subfloor.

Does backer board go over plywood?

Quote from Youtube video: And then put it down and in a older board or screwed it down it would have caused a lot of problems pulling the plywood up the thinset would have wanted to pull the plywood up. And then I'm running

What do you put on plywood before tiling?

Thinset is the wet base that you first trowel on the plywood to make the tile stick. Higher latex content is essential for bonding to plywood. A quality unmodified thinset should be used and mixed with a latex additive.

Can you use Liquid Nails on cement board?

LN-907 Liquid Nails is recommended for cement board and most other common building materials. The application temperature is from 22 to 120 Fahrenheit and the service temperature is -20 to 140 degrees Fahrenheit. This makes it ideal for just about any DIY project and on most construction projects.

How do you install cement backer board on wood subfloor?

Quote from the video:
Quote from Youtube video: To fit in small spaces or around obstructions score the board with a utility knife then cut it using a jigsaw with a carbide blade. Apply thinset between the cement board and the subfloor.

Can you put Hardie board over plywood?

Use minimum 1/2 in exterior grade plywood or equivalent, positioned across the wood cabinet. Space between plywood supports is not to exceed 16 in on center. Do not align HardieBacker cement board joints with plywood joints.

Can you put mortar on plywood?

Tip. Plywood and the flooring to which it is attached must be at least 1 1/8 inch thick to support the weight of thinset and tiles. Only exterior-approved plywood will support the weight; interior plywood and particleboard do not have the same strength and will buckle under the tiles.

Can you use self Levelling compound on wood?

Wood floors need to be primed before covering them with self leveler. The floor will be covered with water-saturated leveler, which will cause the wood to swell. It will shrink back down when it dries, which could cause cracks in the underlayment and tiles above. The primer prevents the wood from absorbing water.

Can you use thinset to level a plywood floor?

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Mortars cannot be used to level or patch a floor – ever! The materials used in mortars render the product unstable once the thickness exceeds the manufacturers’ recommended maximum thickness.

How do you level backer board?

Quote from the video:
Quote from Youtube video: So you would just take a quarter inch not strong. And spread that out and then once you spread that out then you can just take your truck your level. Run it straight across.

How do you level a cement board wall?

Quote from the video:
Quote from Youtube video: With a sheetrock and the cement board met and it was quite a bit of a hump. There. And I really want to make sure that I make it straight. And you take that flat as flat as possible there.

Can you level with thinset?

You can use thinset to install tile over an uneven cement floor and leave the floor perfectly level. You can also use thinset mortar to level out an uneven cement floor or fill small holes in the floor without installing tile.

Do you put thinset under backer board?

Thinset is going to create a solid surface under tile and prevent flexing that could lead to cracking. Using thinset between the backerboard and subfloor will create additional strength, fill in any potential gaps that exist and lessen the possibility of movement.

How thick should thinset be under Backerboard?

Plan for a layer of thinset 3/16-inch to 1/8-inch thick beneath your tile. A 3/16-inch layer of thinset will be enough for tiles with a smooth back to bond the tile to the floor or backer board.

Do I need plywood under cement board?

Because cement board can be used either for floors or walls, the surface below the cement board will vary: Flooring: For ceramic tile floors, the cement board usually rests on a plywood subfloor (minimum 5/8-inch-thick exterior-grade plywood or OSB).