How to Secure Bathtub Flanges to Studs

Written by cadence johansen
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How to Secure Bathtub Flanges to Studs
Screwing a flange to a bathroom's studs is only one part of bathtub installation. (screws image by Eldin Muratovic from

Installing a bathtub is a very involved process that includes plumbing, carpentry and, in many cases, tiling work. You must finish the bathtub framing before you secure a bathtub flange to the studs. After you attach the flange directly to the studs, you can finish the walls next to the bathtub with drywall or tile.

Skill level:

Things you need

  • Cardboard
  • Level
  • Wooden shims
  • Drill
  • Drill bit
  • Screwdriver

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  1. 1

    Slide a piece of cardboard into the bottom of the tub. The cardboard will protect the tub from scratches as you climb in and out of the tub during installation.

  2. 2

    Slide the tub into place in the bathtub framing. Bathtubs are heavy, so it may be helpful to recruit several friends to help move the tub into place.

  3. 3

    Level the tub. Set a long level on the top of the tub (not inside the tub). Place wooden shims along the walls and floor to adjust the tub until it is level.

  4. 4

    Create pilot holes for the tub flange in the wall studs, using a drill. Screw the tub flange to the wall studs with exterior grade screws. Make sure the tub stays level as you tighten the screws with a screwdriver.

  5. 5

    Connect the tub's plumbing.

  6. 6

    Install the drywall or the cement board for tiling directly over the top of the tub flange.

Tips and warnings

  • If you aren't comfortable connecting the plumbing yourself, consult a professional plumber for that step.

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