Concrete – How to level a part of a concrete floor in preparation for installing a washing machine

basementconcreteself-leveling-concretewashing-machine

Whoever installed the existing washing machine in the basement was unable to extend one of the legs long enough to adjust for the slope in the concrete floor.

So they took a piece of wood and stuck it under that corner. The washing machine is level all right, but 1- it's very ugly, and, more importantly 2- the piece of wood could slide out during some spin cycle and then the machine would fall and then wobble like crazy.

The old washing machine is about to go, and a new one is coming in. I'd like to avoid the hack and make the adjustment needed to level the washing machine minimal.

To do that I'm thinking of applying a bit of concrete floor leveling compound. The idea is this: First position some (old/disposable) planks of wood around the area of the washing machine. Keep the planks in place with some tape. Apply the compound to the sealed area (that's the footprint of the washing machine). After the compound sets, remove the planks of wood. Now the new washing machine has a nice little square to sit on that's reasonably level.

  1. Is this a reasonable solution?
  2. Can you think of a better way?

Best Answer

Instead of temporary forms, make permanent ones. Cut a 2x4 in to a wedge shape, apply a thick bead of silicone down the middle of the underside, and screw them down with masonry screws. Once the silicone sets, fill your forms with cement. Now you have a nice level permanent pad for your machines.