Brian Kehlmeier
Member
I have read in these forums various materials used to decouple the mortar bed from the OSB subfloor, but I question its purpose. If the shower pan is being screwed into the studs it makes sense, but the Dreamline shower pan I am using does not. It seems to me that I would WANT the mortar to bond to the subfloor to keep it from moving. Can someone convince me one way or the other?