How do I Add Additional Support to a Whirlpool Bathtub?

Written by evan fulford
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How do I Add Additional Support to a Whirlpool Bathtub?
Feel safe in your sufficiently supported whirlpool bathtub. (Jupiterimages/ Images)

When installing a whirlpool bathtub in your home, it is very important that there is structural support beneath the installation site. When whirlpool bathtubs are being used, they can become very heavy with the weight of the user and water combined. If there is not enough support in the floor beneath where the tub is installed, you run the risk of having it fall through. When installing a whirlpool bathtub, a building inspector must be called to your home for an inspection. He will inform you whether you need to add additional support to the floor of the installation site. When additional support is needed, you can add it by putting in extra floor joists hangers into your bathroom's floorboards.

Skill level:

Things you need

  • Face mount joist hangers
  • Hammer
  • Nails

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  1. 1

    Expose the floor joists beneath your whirlpool bathtub. If you are installing the tub above a basement, the joists may already be exposed. If you are installing the tub on the second floor of your home you will have to remove the floorboards in order to gain access to the joists.

  2. 2

    Purchase face mount hangers that are the appropriate size for your floor joists, and nails. Measure the width and height of the floor boards beneath your bathtub, and bring this information to the hardware store. It is important that you purchase face mount hangers, as they can be installed on pre-assembled joists. Purchase as many hangers as there connections between joists and support beams beneath your tub.

  3. 3

    Place a joist hanger at each of the spots where a joist intersects with a floor beam. Joists are in the shape of a U and must be installed in the same orientation as the letter is written, with the open end facing upwards.

  4. 4

    Hammer a nail through each of the holes in the floor joist, connecting with the floor beams and support the joists. These joists reinforce the connection between your floor beams and joists so you have the support necessary for your whirlpool bathtub.

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