I’m renovating our bathroom and have a cast iron stack and toilet drain. I replaced the flange and will be installing a Oatey PVC drop in toilet flange.
My tile guy had cut the tile around the flange so it would sit on the sub floor and not the finished surface. I know the flange needs to sit on the finished surface as to prevent any issues upon toilet installation.
My question is, I plan on using a 1/4” flange spacer to accommodate the difference in flooring heights. Should I put the spacer down first, and place the replacement flange on top? Or set the toilet flange, and then add the spacer? Or does it matter?