Sorry if I am not posting this in the correct place, this is my first post. My contractor wants to use morter mixed with acrylic to cover the screws that he drilled into the Hardibacker he is using for my shower. I keep reading about Redgard. Should I insist on Redgard or just let him go with morter with acrylic. Please let me know your opinions ASAP. Thanks!
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Redgard vs Morter Mixed with Acrylic