I’m rebuilding my shower stall. I was going to put 40 lb felt on the wall then Hardiboard on top of that and seal it with “redguard”. Well I got a little carried away. I put up the Hardiboard ,but forgot to put my 40 lb felt behind it. Now I’m wondering if I should remove the Hardiboard and install the felt or just forget it as I’m positive that the redguard will seal the moisture from getting through.