How to Add Insulation to a Hot Tub

Written by j. johnson
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How to Add Insulation to a Hot Tub
A well-insulated hot tub will operate better. (Jupiterimages/BananaStock/Getty Images)

When you add insulation to your hot tub, you are actually saving yourself money. Because your hot tub will operate more efficiently with added insulation, it will take less energy to heat up each time you use it. This extra energy basically translates as additional dollars in your pocket. The main methods that you can use to add insulation to your existing hot tub are quick, easy and cost-effective when compared to the money you will be saving through the season.

Skill level:
Moderately Easy

Things you need

  • Hot tub cover

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  1. 1

    Look for a hot tub cover that is made with a closed-cell foam. This type of cover will provide more insulation for your hot tub.

  2. 2

    Find out the R-value for the hot tub covers you're considering. Generally, covers made with a closed-cell foam will have a higher R-value. The higher R-value you can find, the more insulation the cover will provide.

  3. 3

    Test out the cover. Make sure the cover you choose fits very tightly around your hot tub. No matter how much insulation the cover provides, it will not add insulation to your hot tub unless it fits perfectly.

  4. 4

    Keep the cover on when you're not using your hot tub. This will help to trap the heat inside the water and make it easier for your hot tub to heat back up again.

Tips and warnings

  • Add a layer of rigid foam insulation to your hot tub. This layer must be added between the exterior wall and the fibreglass tub, meaning that you will have to have a professional do the installing. Once the project is done, however, your hot tub will be much better insulated.

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