We will be installing ceramic tile (12" sq.) in the kitchen of our 1947 bungalow. After pulling up the previously laid ceramic tile and 1/4" luan (ugh), we've found a couple more layers.
Below that we've found 1/4" hardboard (nailed down), with what appears to be the original linoleum that has a bit of foam backing laid on top of two layers of plank sub-flooring.
We're wondering what would be best to remove and what to add before laying the the cement board with mortar. We can get the hardboard and linoleum layers off fairly easily, but the linoleum leaves a layer of foam on the sub-floor.
We assume it is not a good idea to attach the cement board directly to the black foam residue on the planking. We are considering removing the linoleum, leaving the foam and screwing down a thin layer of plywood before adding the cement board. Is this a reasonable plan? Is the plywood necessary? Is there a better or easier option?
We were hoping to get this project done this weekend (140 sq. ft), but that now depends on the next steps.
Craig and Kim
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