How to Secure Bathtub Flanges to Studs

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Things You'll Need

  • Cardboard

  • Level

  • Wooden shims

  • Drill

  • Drill bit

  • Screwdriver

Screwing a flange to a bathroom's studs is only one part of bathtub installation.

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 can finish the walls next to the bathtub with drywall or tile.


Step 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.

Step 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.

Step 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.


Step 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.

Step 5

Connect the tub's plumbing.

Step 6

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


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