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Thread: Adding Insulation to a Tub?

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    Adding Insulation to a Tub?

    I am considering adding styrofoam insulation board to my hot tub. I am wondering if there might be a reason not to do this. I drop around 9 *F from 102 in 24 hours. Maintaining 102 requires 2 hrs of heating per day (70 day, 45 night).

    My new tub is an Infinity bought from Costco. I have read lots of criticism of this brand on other forums. Much of it seems to be from dealers upset about the low prices available from Costco.

    I recently saw a TV show, “How They Make It”, and the tub they manufactured had a lot more foamed on insulation than my tub has and had vents “for the heat from the pumps” which I do not have. I do have aluminized bubble wrap insulation at the side walls.

    The tub sits on deck joists that are at ground level. Unfortunately I did not put any foam insulation boards under the tub. I can only add insulation on top of the plywood bottom of the tub. Moving the tub to put insulation under it would require cutting the power conduit.

    Thanks

    Curmudgeon

    350 gal Infinity using BBB

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,887

    Re: Adding Insulation to a Tub?

    In general adding more insulation is good. As long as the insulation is water proof and you don't do anything that will cause the pump(s) to overheat you should be fine.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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