I would like to fit my new showertray directly onto 6mm Backerboard that is sitting on 22mm t&g chipboard, i'm not sure how i would plumb in the waste for the shower, at what point do i do this? When the showertray is fitted there will be no access under the flooring so im not sure how this will work, can anyone help?
CGN
Screwfix Select
Put the tray in place. Draw around its perimeter, draw around the waste hole. Remove tray. You’ll then have a guide to where the waste needs to go to.