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In regions where freeze/thaw occurs, or there will be custom decking abutting the hot tub we recommend the
installation of sono-tubes beneath the pad to prevent shifting.
IN-GROUND AND PARTIAL IN-GROUND INSTALLATIONS
For units being installed fully or partially in the ground, the type of support will again vary based on whether or
not the tub is being installed in an area with freeze/thaw conditions. Hydropool does not recommend back-
filling full in-ground or partial in-ground installations.
Non-freezing climates – it is sufficient to ensure that the base of the hole cavity created for the tub has
a dry, stable, compacted level base and proper drainage.
Climates where freeze/thaw occurs – it is necessary that a poured level reinforced concrete base,
complete with concrete footings be installed as outlined in the section ABOVE-GROUND
INSTALLATIONS.
Areas with a high ground water table – a level concrete base, as well as a concrete or wood retaining wall to
hold back the earth, is recommended. This forms a box or bunker, in which the hot tub is placed.
ALWAYS ensure that there is good drainage, via a properly designed French drain (gravel) system
and/or sump pump, to prevent ground water flooding damage to the support equipment or hot tub
structure.
Install protective waterproof conduit to house any cables that will be buried.
Access for future service must be considered at the time of design and installation. You must be able to
access all sides and areas of your hot tub. Difficult access will result in supplemental service labor
charges not covered by the factory warranty. Consider easily removable deck materials.
Make sure the hot tub is tested for 48 hours before you prepare the installation of the surrounding/finish
deck around your hot tub. Even though all units are tested in our plant, some transport/site handling
damage can occur and we suggest you make sure the tub is perfectly waterproof before finalizing your
installation.
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