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Thread: Installing Solar Heater on Roof

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    Installing Solar Heater on Roof

    I am thinking of installing a rather large, 20'X20' solar pool heating panel on my flat roof. I calculate the load to be about 4.3 pounds per square foot. Do you think the added weight will be a problem?

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Installing Solar Heater on Roof

    Welcome to the forum. I think we have to start by finding out how strong your roof is. What type of construction? Wooden rafters? How far apart? What size are they? What is the span? What is the sheathing on the roof?
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: Installing Solar Heater on Roof

    What he said, also 20x20 is an odd size for a solar panel, what sort are you considering, and it would probably be helpful if you share your location and pool information if we are to give any other beneficial advice.


    p.s. Also that is a LOT of weight, the panels I have only have a wet weight density of 1.31 psi (or 64 pounds per 4x12 panel) These are Techno Solis brand panels which weigh considerably more than most brands do, for comparison some Aqua Therm 4x12's panels have a wet weight of only 48 pounds or 1.0 psi wet weight density.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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