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I'm currently redoing my master bathroom. I purchased a Schluter shower kit to use for the shower pan. Per directions, I used an unmodified thinset to adhere their waterproof membrane to the backer board walls. I was not comfortable with how I adhered them, so after a few weeks, I pulled the membrane off the wall. I've decided to go with Redgard to waterproof the walls and use the Schluter shower pan.
I was told that I should fill in any gaps with modified thinset over the unmodified thinset to smooth out the wall before using Redgard.
My question is can I used a pre-mixed modified thinset over the unmodified thinset to smooth it out? Will it adhere properly?
I was told that I should fill in any gaps with modified thinset over the unmodified thinset to smooth out the wall before using Redgard.
My question is can I used a pre-mixed modified thinset over the unmodified thinset to smooth it out? Will it adhere properly?