? asked in Home & GardenDo It Yourself (DIY) · 6 months ago

I want to build a hot water based heat storage tank out of wood. What is an effective, inexpensive way to waterproof the tank?

11 Answers

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  • james
    Lv 7
    6 months ago

    Use dry wood. Slat it & tounge & grove the wood. In a ship lap manner. Build your rings of stainless steel. fit the slat together inside the wood rings. Use a wood hammer or mall to place the last one. Fill with water & let the wood swell. Any leaks tap coconut fiber into them to seal. This takes some skill. Build it like a basic fermentation barrel for soy sauce.

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  • Kenny
    Lv 7
    6 months ago

    Use a plastic container and put wood around it . That way you get the look but not the leaks .

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  • elhigh
    Lv 7
    6 months ago

    EPDM rubber sheet. Waterproofing coatings can't be counted on; you need a seamless liner that will guarantee there are no gaps for leaks.

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  • 6 months ago

    Don't make it out of wood.

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  • Anonymous
    6 months ago

    Wood is terrible for radiating heat so not a material I would use for a heat storage tank. Does not insulate well enough to keep things super cool either for very long.

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  • Anonymous
    6 months ago

    They used to build and still do water tanks on top of buildings. And the water itself seals the wood tanks. Obviously you have to know what you are doing. To loose of a space it leaks. Too tight you will split the wood. It also depends on what type of wood and how dry the is.

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  • 6 months ago

    the old fashioned barrels did that. they relied on the dampness to keep the wood expanded and thus watertight. however, making one isn't a DIY job

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  • 6 months ago

    Build it like a wooden boat or a barrel. Use tight fitting joints and then fill it with water so the wood will expand and make the joints tighter. Use rope caulking to fill any leaks.

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  • 6 months ago

    You don't NEED to waterproof the wood. The INSULATION will prevent the water from touching the wood.

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  • 6 months ago

    Landscape pond liner .

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