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Install an alcove bathtub with apron

A new tub and shower will be popular with everyone, but planning your bathroom renovation is also a great way to invest in your home. To ensure the success of your project? Know your plumbing basics! Especially drains, water lines and fans. This project involves installing a steel, acrylic or vinyl bathtub and shower in a support frame. Installation will be a lot easier when the pipes are exposed.

Preliminary plumbling

  • For this project, we are assuming that the water supply lines and floor drain are already installed. Block the floor drain opening with a rag to keep debris out.
  • Always protect the bathtub to prevent any damage during handling.
  • Choose a bathtub and waste pipe that is positioned for easy connection to the existing plumbing.
  • Measure carefully: the waste pipes from the tub must fit into the floor drain.
Prepare the alcove for installation
1

Prepare the alcove for installation

  • 1.1 - Turn off the water supply to the entire house.
  • 1.2 - Ensure the walls, corners and floor are square and level.
  • 1.3 - Measure the depth and width of the alcove.
  • 1.4 - Measure the tub to be sure it will fit.
  • 1.5 - Put two runners on the floor to help slide in the bathtub.
  • 1.6 - Position the tub in the alcove. Set the level on top of the tub and check.
  • 1.7 - Use shims to level.
  • 1.8 - Use a pencil to mark the top of the nailing flange on all the studs around the tub. Ensure the tub is level and adjust if necessary.
  • 1.9 - Remove the tub.
  • 1.10 - Nail 1" x 4" wood strapping on the three walls just under the pencil marks.
Install the bathtub drain flange and overflow
2

Install the drain flange and overflow

  • 2.1 - Put the bathtub on its side.
  • 2.2 - Apply plumber's putty under the collar of the drain flange.
  • 2.3 - Place the drain flange over the bathtub drain hole.
  • 2.4 - Position the flat washer between the underside of the tub and the drain elbow (shoe).
  • 2.5 - Screw the drain flange to the tub shoe. Do not over tighten or you may damage the tub.
  • 2.6 - Remove excess putty.
  • 2.7 - Place the seal gasket on the overflow elbow and place behind the bathtub.
  • 2.8 - Install the overflow plate in the bathtub and use long screws to screw into the overflow assembly.
  • 2.9 - Connect the overflow and drain flange assembly with a T-fitting and pipes.
Position the bathtub between the walls and connect the drain
3

Position the bathtub and connect the drain

  • 3.1 - Reposition the bathtub on its base and slide it in to the alcove. Be careful not to disrupt the overflow assembly.
  • 3.2 - Align the waste pipes and overflow pipes with the pipes on the floor and assemble.
  • 3.3 - Ensure the bathtub is level and that the nailing flange is aligned with the pencil marks.
  • 3.4 - Drive roofing nails into the strapping just above the flange, so that the nail heads overlay the flange.
  • 3.5 - Nail into the studs on either side of the bathtub.
4

Finish the walls and test the installation

  • 4.1 - Install mold-resistant drywall around the tub.
  • 4.2 - Install ceramic tile with a quality wall adhesive and seal with grout
  • 4.4 - Turn the water back on and flush the toilet a few times to clean out any accumulated dirt that may have settled in the pipes during installation.
  • 4.5 - Apply silicone sealant around the tub where the ceramic tile meets the tub.

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