new basement construction

[Guest guest]

Well, since any kind of drywall is likely to be contaminated with exactly what

I am trying

to avoid, what would be a viable susstitute for a basement bathroom?

I bought a fiberglass shower which I can't return even if I want to. It needs to

be anchored

somehow, and I already figured out that the usual method of using adhesives to

glue the

treated lumber on the floor would make me sick.

We have discussed using treated lumber and cement screws. Also using ceramic

tile

Cement instead of glue where needed.

Maybe I can use cement board, but where could I find a clay plaster to put over

it instead

of the usual drywall putty (you know, that plaster substitute that is used on

drywall). And

then , how do you finish the wall? What kind of paint, etc.

It sounds like what ever I do for the painting part of it, I am likely to get

affected by it.

Any comments and/or suggestions?

Thanks,