I am a novice builder working on a 2nd floor bathroom renovation.I
have gutted the room completely down to studs and floor joists.I took
out a wall and incorporated the space from a closet in an adjoining
bedroom.I moved the toilet to the opposite wall so I could install a
larger vanity (48inch as opposed to 30 inch).I have installed new
wiring circuits for the pump and heater on a whirlpool tub.I have
installed recessed lightling and moved the existing light fixture to
be centered on the new vanity, and have installed a new GFI socket for
hairdryer.I have also modified the tub/shower fixtures to accomodate
the larger tub and have modified the plumbing for the new vanity.I
have layed a new subfloor(5/8 plus 3/4 plywood.)

My next steps are to install new drywall and build a tub deck and I am
stuck on how I should proceed.

Should I build the tub deck first and incorporate its framing into the
framing of the room, or should I drywall first and build the deck
after?

I plan on useing Kerdi waterproofing around the tub. Should I use
drywall or cement backer board to support the tiles on the walls?

The weight of the tub is to be supported by the floor and not the tub
deck.At the same time I want a close fit between the tub and the tub
deck so I can waterproof the joint.By the time I add cement
board,Kerdi liner, mortar, and tile to the top of the tub deck, I
don't know how thick this will all be.Its hard for me to accurately
build the framing for the tub deck.Maybe I can build it slightly
higher and use extra mortar to build it up to the tub edge? I dont
know.How would a pro get this measurement right.

Thanks for your help.

On Feb 3, 1:10*pm, wrote:
I am a novice builder working on a 2nd floor bathroom renovation.I
have gutted the room completely down to studs and floor joists.I took
out a wall and incorporated the space from a closet in an adjoining
bedroom.I moved the toilet to the opposite wall so I could install a
larger vanity (48inch as opposed to 30 inch).I have installed new
wiring circuits for the pump and heater on a whirlpool tub.I have
installed recessed lightling and moved the existing light fixture to
be centered on the new vanity, and have installed a new GFI socket for
hairdryer.I have also modified the tub/shower fixtures to accomodate
the larger tub and have modified the plumbing for the new vanity.I
have layed a new subfloor(5/8 plus 3/4 plywood.)

My next steps are to install new drywall and build a tub deck and I am
stuck on how I should proceed.

Should I build the tub deck first and incorporate its framing into the
framing of the room, or should I drywall first and build the deck
after?

I plan on useing Kerdi waterproofing around the tub. Should I use
drywall or cement backer board to support the tiles on the walls?

The weight of the tub is to be supported by the floor and not the tub
deck.At the same time I want a close fit between the tub and the tub
deck so I can waterproof the joint.By the time I add cement
board,Kerdi liner, mortar, and tile to the top of the tub deck, I
don't know how thick this will all be.Its hard for me to accurately
build the framing for the tub deck.Maybe I can build it slightly
higher and use extra mortar to build it up to the tub edge? I dont
know.How would a pro get this measurement right.

Thanks for your help.

Just thinking logically, I would put the tub in place, fill with water
and add all the heavy peripherals and frame to suit the position. But
others with more direct experience may have better ideas. HTH

Joe

Should I build the tub deck first and incorporate its framing into the
framing of the room, or should I drywall first and build the deck
after?

Your choice. Either way will work fine.


I plan on useing Kerdi waterproofing around the tub. Should I use
drywall or cement backer board to support the tiles on the walls?

cement backer board


The weight of the tub is to be supported by the floor and not the tub
deck.At the same time I want a close fit between the tub and the tub
deck so I can waterproof the joint.By the time I add cement
board,Kerdi liner, mortar, and tile to the top of the tub deck, I
don't know how thick this will all be.Its hard for me to accurately
build the framing for the tub deck.Maybe I can build it slightly
higher and use extra mortar to build it up to the tub edge?

Build it slightly higher. Pour a bucket of mortar onto the floor, set the
tub in place and press it into the mortar.