Natural spruce is the budget wall board: knotty and pale, milled by ProSaunas in tongue and groove for walls and ceilings. It is not thermally modified, so it moves more than thermo-spruce, the same wood made stable with heat and steam. Use it where cost matters most and the room is well ventilated.

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    PROSAUNAS Spruce 1X4 T&G STS4 Wall Cladding – Sauna Wood

    Price range: $1.33 through $18.68

    The most economical real sauna wood we carry, and the traditional one. Natural Nordic Spruce, 1×4 smooth tongue-and-groove, the wood Finland has lined saunas with for generations. Light tone, tight characterful knots, a clean mild scent. It is not thermally modified, so it moves a little more than our thermo woods through the heat-and-cool cycle. We carry it for the budget build and the honest Finnish look. Sold by the linear foot, in lengths up to 14 ft.

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