Can someone please "check my math" to make sure I am on the right path.. I am about to install a kohler archer soaker tub and want to make sure before I commit that I have my act together.
First question - I am planning on adding ledger boards to the back and side walls to give the tub a place to rest - no support - that comes from the floor. Is the ledger needed on the left / right side or just the long side? (The one that is in the picture was for the original builders grade steel tub.)
Second - I am planning on adding a 2" +/- mortar bed underneath to firm up the base. Is one better than the other? - Either Quickcrete Mortar 1102 or Quickcrete 1103 - Sand/Topping Mix? My plan is to put a plastic sheet / vapor barrier on the subfloor and then pile in the mortar and set the tub? Yes, No?
Third and final for now - I am planning on adding blocking to the walls to support the wonderboard and then kerdi on top of it, lipping it over the tiling flange for the vapor barrier. the existing vapor barrier will be removed. Since that is an external wall, what about the area below the ledger board - would it need a standard vapor barrier or does the tub cover it. My guess is it needs it since there will be space between the tub and exterior insulation.
thanks!
First question - I am planning on adding ledger boards to the back and side walls to give the tub a place to rest - no support - that comes from the floor. Is the ledger needed on the left / right side or just the long side? (The one that is in the picture was for the original builders grade steel tub.)
Second - I am planning on adding a 2" +/- mortar bed underneath to firm up the base. Is one better than the other? - Either Quickcrete Mortar 1102 or Quickcrete 1103 - Sand/Topping Mix? My plan is to put a plastic sheet / vapor barrier on the subfloor and then pile in the mortar and set the tub? Yes, No?
Third and final for now - I am planning on adding blocking to the walls to support the wonderboard and then kerdi on top of it, lipping it over the tiling flange for the vapor barrier. the existing vapor barrier will be removed. Since that is an external wall, what about the area below the ledger board - would it need a standard vapor barrier or does the tub cover it. My guess is it needs it since there will be space between the tub and exterior insulation.
thanks!