Thermally modified alder is a favorite material for sauna wall panels and bench boards due to its unrivalled warmth, performance, and lovely fragrance.

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    joint end matched jem 1x4 thermo-alder sauna wood
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    Thermo-Alder Wall Paneling 1×4 STS4 (JEM) – Sauna Wall and Ceiling Wood By Thermory

    Thermory
    $3.56 – $209.00

    1×4 STS4 JEM in premium Thermo-Alder is unique in our sauna wood catalog, with tongue and groove ends.  That means you don’t need full-length boards and can create stunning visual effects with staggard seams that are perfect every time.  Thermally modified alder is one of the best-performing woods, with a warm tone, and a favorite among high-end sauna builders and manufacturers.

    Select options This product has multiple variants. The options may be chosen on the product page
    1x5 thermo-alder sts4 sauna wood
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    Thermo-Alder Wall Paneling 1×5 STS4 – Sauna Wall and Ceiling Wood By Thermory

    Thermory
    $3.56 – $209.00

    Wide plank 1×5 thermo-alder is an exceptional sauna wall material that can be installed vertically or horizontally.  The natural brown tone provides a classic, upscale sauna look.  Thermally modified alder is one of the best-performing sauna woods, with a warm tone, unbeatable performance, and timeless appeal.  The minimal expansion and contraction of Thermo-Alder allows for tight, seamless transitions without molding.

    Select options This product has multiple variants. The options may be chosen on the product page
    thermo-alder 1x4 shp sauna bench skirt and backrest wood by thermory
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    Thermory 1×4 SHP Thermo-Alder Bench, Backrest, and Skirt Sauna Wood

    Thermory
    $4.96 – $243.04

    Thermo-Alder 1×4 SHP Bench material is a popular choice for sauna benches, backrests, and skirting.  This mid-tone is more brown and woodsy looking than thermo-aspen.  Great for a more traditional cabin-sauna or cottage feel.

    1×4 Bench Boards are an easy and low-cost way to build a premium sauna bench framed with standard 2x4s and decked with these .83″ thick boards horizontally or vertically.  See below for our framing suggestion.

    Select options This product has multiple variants. The options may be chosen on the product page
    thermo-alder 5/4x4 shp sauna bench skirt and backrest wood by thermory
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    Thermory 5/4×4 SHP Thermo-Alder Bench, Backrest, and Skirt Sauna Wood

    Thermory
    $5.92 – $232.06

    Thermo-Alder 5/4 SHP Bench material is a great choice for sturdy, warm-tone benches that are smooth to the touch.  This mid-tone thermo-aspen is more brown and woodsy looking than thermo-aspen.  Ideal for a more traditional cabin-sauna or cottage feel (an even darker, intensely modified thermo-alder is also available).

    5/4×4 Bench Boards are an easy and low-cost way to build a premium sauna bench framed with standard 2x4s and decked with these 1.1″ thick boards horizontally or vertically.  See below for our framing suggestion.

    Select options This product has multiple variants. The options may be chosen on the product page