installation of a wooden ofuro is quite simple. The hot tub basically is simply laid on a waterproof floor.

  • installation:

  • tradition + performance

    the hinoki bathtub is basically like a large basinet which sits on the floor. The faucet is usually wall mounted or ledge mounted so no adaption is needed. The drain is in most cases not connected with any fitting: the water just flows on the floor towards a floor drain. Installation of an hinoki bath is simple and straightforward.

    no waterproofing for 1st floor installation ->

    wood tub installation

    We usually have a couple of standard tubs in stock, but we recommend you to have your bath-tub made to order to your specifications.
    We will be able to customize the tub, match your desired dimensions, choose your preferred wood essence at no extra cost.
    We will provide you with detailed CAD drawigs and personalized installation instructions. We also provide technical assistance, and a 1-year guarantee against manufacture defects.

    Please read below for more informations or feel free to contact us for any inquiry:
    tel. +81-78-262-6811 (mon-fri 9-19 JST)
    fax. +81-78-262-7151

    hot tub install

    easy fit

    wood tub waterproofing

    If the bath is not at the ground floor, for precaution, floor and shoulders should be waterproofed up to 30cm


    Japanese tub setting

    Wooden wall panelings are popular with hinoki tubs but we recommend a 30cm protection above water level for easy maintenance.

    soaking tub

    The bathtub is shipped in one piece and is ready for installation. It should be left on site for at least 24 hours before installation.


    hinoki tub adapting

    4 - ADAPTING
    The hinoki tub is set in place: it can be fitted in tight or leaving a gap from the perimetral walls. See the FAQs.

    ofuro set

    5 - SET
    The tub does not need caulking but it can be sealed if you prefer. Protect until tile grouting is completed.


    Japanese soaking tub

    GO! -6
    Just fill it up and enjoy life!

    hot tub install


    Commonly there are 3 reasons to use a waterproof floor with floor drain in combination with a hinoki tub.

    R1) The first is as a double safe, to pick up some condensation or a discharge caused by an eventual crack in the wood.
    R2) The second is for having a "shower area" to wash the body before entering the tub (which must be used for soaking only).
    R3) The third reason is to drain the water overflowing from the top of the tub.

    S1) To satisfy the first circumstance, a waterproofing the floor with 1/50 slope should be enough. For small spills the floor can be sweeped. Adding a floor drain would be safer but would probably involve going thru the slab or raising the floor. Another solution would be to build up the tub to create a waterproof pan under the tub only. (see curb detail @ bottom-RIGHT)

    S2) The second point does not need to be addressed, if you have a separate
    shower area. Otherwise you will need at least a 60mm waterproof pan with
    floor drain. (see full waterproofing detail @ bottom-LEFT)

    S3) With reference to the overflow: to prevent water overflowing you should keep the water level about 100mm under the top. Anyway for standard tubs (external height = 700mm / internal depth = 600mm) this means having 500mm or less of water. Also, it might be cumbersome to have to adjust water level when one person enters the tub. And again if two people use the tub
    together. For this reason japanese bathing usually involves a top overflow facing to waterproof floor area in front of the tub. The waterproof pit does not need to be very deep as long as this area is wide enough. This area in front of the tub can be covered with duckboards in hinoki wood. (see full waterproofing detail @ bottom-LEFT) See also waterproofing details

    ofuro installation

    ofuro installation

    SUEOKI (exposed front type)
    This solution is adopted often in remodelings and when the bath is installed in an apartment. It allows for the beautiful front panel with its masterful joints to be shown.This solution makes it easy to realize a japanese-style bath-room unit, where the whole floor is waterproofed and sloped. A wood grate (sunoko) constitutes the flooring and provides great comfort and practicality (yes, you will be able to shower without worrying about leaking water on the floor!) The optimal step from finished floor to the edge of the tub is between 500 and 650mm.
    UMEKOMI (recessed and semi-recessed type)
    In this case we have a masonry separator between the floor and the bath-tub itself. This solution allows for any adjustment in the levels, from flat floor to semi-recessed to recessed for barrier-free entrance and egress from the tub. Recessed solutions find the perfect applications at the ground floor of single family dwelings. The bath-room floor can be waterproofed or not, as liked. The use of dark tiles/marble in the bathroom enhances the elegant effect of the wooden inside of the hinoki-tub.
    hot tub install
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    Solution Graphics

    installation of a wooden ofuro is quite simple. The hot tub basically is simply laid on a waterproof floor.