I'm installing Duk Liners in my new shower (open studs). The image below shows how Curtis recommends installing them, which looks pretty simple, but I have concerns. If the grout seams leak, I will have moisture behind the durock.
The instructions don't mention it, but should I put some sort of silicone or sealant between the durock and the Duk Liner flange? If not, how can moisture not leak through the grout over time? Any other pointers?