Does anyone know of a suitable cement backer board that can be used externally to make the squareing / levelling off of a step easier / quicker i understand hardibacker is`nt any help appreciated
and i take it that it is ok to use as a step base as a lot of these cement board manufaturers say it is ok to use on walls but not on concrete floors , thanks for replys
if its a concrete base you will be fine...............here is a contact number for there technical dept at Knauf for anyone with questions. Knauf Drywall Technical Dept - 01795424499
I use it for rendering not tiling so my knowledge is limited but i know its freeze thaw tested