do i need mortar under the cement board?
no just screw or nail good
to commence with, i might want to pull up all the floor decking all the way down to the joist, and make really confident all joist are solid. once it really is done and that i have determined all to be solid, i might want to lay down a three/4 plywood. i might want to apply a floor grade tongue and groove. you may want to apply dealt with plywood, yet its extremely not necessary as long as you're taking all necessary steps in the course of the redesign. when you lay down your cement board, make confident you grout the joints of the cement forums and allow to dry formerly utilising thinset for the tiling, this allows to make moister barrier. make confident you seal the tile grout joints after laying the tile. make confident the sealer has satisfactory time to dry. perfect installation of the wax ring on the rest room is necessary. make confident the rest room sits flat after installation and that it does not rock. use a very good silicone caulk around the bathtub and the bottom of the rest room to boot. you may also reseal the grout joints each and every three hundred and sixty 5 days or so because alot of floor cleaners on the marketplace can become worse the sealer. only a part observe; in case you may placed a tumbler of water on the floor and once you walk on the floor and the water strikes, the floor has what's call spring in it. all this potential is that in time all the springing action contained in the floor may reason hairline cracks contained in the grout joints hence providing a channel for water. if that is the case then seal in many cases. desire this allows
No.Do not put any mortar under the board.And do not tape the joints just use straight mortar.I suggest Quick set or commonly known as hot mud.Then use liquid nail to put tile down.then use a mixture of silicone and spray paint [any color] and mix well before applying.Apply with a paint brush and then sponge off every couple of minutes so that none dries on the tile.
If this is cement board for putting tile on in a bathroom it is not necessary for mortar under the board just screw it to the studs and glue on the tile
no you just screw it to the wall or studs. then after its up you tape and mortar the joints with special mortar and tape. then you tile or put you tub surround up over it
