The proper thing to do is to bubble the entire house. Send in the HazMat team and remove every fibre of asbestos.

What really happens is this stuff gets removed and the new floor goes in.

Some guys do this. Some do not.

Are you not adding an underpad under the click flooring? That will certainly smooth over any minor bumps of 1/32".

A T molding for the transition will allow you some flexibility and cover the gap. Sometimes they are designed like reducers.

When I did my Nana's home for her I left the old floor peel n stick tile and added the foam underlayment. And then went right over top. Or you can budget $5,000 to prep 20 square feet of flooring that most likely costs less than $100.00

I paid about $2K to have an asbestos removal company take up my kitchen and basement tile floors. They did it correctly, hazmat suits, air blowing outside the house, rooms sealed off, etc. But this powder room was forgotten! Someone shut the door and they didn't see it!
So, now I've got 16 square feet of presumed asbestos-containing floor tile (don't know since this particular tile wasn't tested) either to cover up or remove. My carpenter doesn't think it's worth calling in the asbestos removal people, and in my state, a homeowner can remove non-friable suspected asbestos-containing flooring up to 100 square feet.

I'd like to cover it up. All the EPA websites say cover up asbestos tile. It's not dangerous if it's not friable (crumbling) and my tile is not.

The underlayment for Click will add more height to the powder room floor. There's a silvery foam type sold by Farbo (it's 1/8" at least), and whisper wool underlayment that's 1/8" thick. So my powder room floors would be 3/8" higher than my kitchen floor. Will this look bad?

Will the underlayment be enough to "hide" the uneven floor caused by the missing pieces of white tile? Or will I need to fill them in/even out the floor with some leveling or patching product?

I looked up t-moldings and reducer moldings -- not the look I was hoping for, but I can live with it if I have to. I understand Farbo no longer sells transition moldings.

I was hoping I could get the Marmoleum and the wood floor to abut each other at the same height, but I'm assuming this isn't possible with Click? Does anyone know? Does anyone have Click installed adjacent to a wood floor without an expansion gap?

If the white tile is breaking up, then it's friable. Did you get a price yet from the guys who removed your other asbestos? I would have them remove the plywood and everything above it.

Friable means that it can be crumbled, pulverized or reduced to powder by the pressure of an ordinary human hand. Snapping because it is adhered strongly to another item is not the same thing.

Loose flooring really needs to be removed prior to installing a new floor.

This is unrelated to asbestos but related to changes in floor height. Most of the housing stock in my neighborhood is pre-Civil war, so no bathrooms, originally, and in some instances no subfloors. just the floor, which is thick planks in this case, on the joists.

Old-school bathrooms have wire mesh and mortar beds set on the historical flooring, and newer bathrooms have underlayment and cement board and/or some sort of membrane, and/or leveling compound in order to lay down a ceramic tile floor. (Ceramic tile bathrooms are the standard here, no other materials, or rarely).

So the bathroom floors end up being a definite step up from the floor in the adjacent room: mine was probably an inch. With a proper beveled threshold in the doorway it was not a problem, we seem to accomodate more easily to changes in level like this at doorways whereas this would be a tripping hazard in the middle of the floor somewhere.

So if you can bury it and it makes your floor higher, it's generally not a big deal, it's really rather commonplace to have changes in level like this with changes in materials.

I'd take out all the old tile down to the sub floor. It will let you have a smooth transition and keep your options open for flooring.

We had a few items with < 3% asbestos in our remodel, and it was quite easy to properly dispose of. The crew wore some masks and we had to pay a fee to take the materials to a special dump.

It looks like someone should be able to pry the whole thing up in one piece including the underlayment leaving the tile as the middle of the sandwich.