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Alder Sauna Wood

Alder sauna wood here is ProSaunas alder paneling, bench wood and trim, in lengths from 1 ft up to 10 ft. ProSaunas selects alder with a light color and a subtle grain and describes it as durable and naturally water resistant.

Filters
Alder 1x5 tongue-and-groove paneling board leaning upright, showing light face grain and the tongue edge
Alder 1x5 tongue-and-groove paneling board at an angle, showing smooth face grain and grooved bottom edge
ProSaunas Alder 1x5 Tongue & Groove Sauna Paneling, Nickel Gap
$6.54 - $65.45
+Shipping
Alder 2x2 Trim piece propped upright at a slant, casting a soft shadow, showing the long face and narrow side
Alder 2x2 Trim piece lying flat, long angled view showing light face grain and the squared end with softly rounded edges
ProSaunas Alder 2x2 (1.1" x 1.4") Sauna Trim
$3.48 - $34.73
+Shipping
Alder 2x2 Trim piece leaning upright at an angle with a soft shadow beneath it
Alder 2x2 Trim piece, a long square wood strip with light grain, shown at an angle from one end
ProSaunas Alder 2x2 (1.1" x 1.1") Sauna Trim
$3.07 - $30.72
+Shipping
Alder 1x2 T-Molding piece standing at a slant on a white background, showing the T-shaped profile at its base
Alder 1x2 T-Molding piece lying flat, angled view showing the raised center rib and flat flange along its length
ProSaunas Alder 1x2 Sauna T-Molding
$2.57 - $20.52
+Shipping
Alder 1x1 Trim piece leaning upright at an angle, casting a soft shadow on a white background
Alder 1x1 Trim piece lying at a slight angle, showing light grain on the long face and a square end
ProSaunas Alder 1x1 Sauna Trim
$1.92 - $15.39
+Shipping
Alder 1x2 Door Trim piece end view showing the profile with a recessed channel along the underside
Alder 1x2 Door Trim piece angled view showing face grain, rounded edges and a recessed groove on the end
ProSaunas Alder 1x2 Sauna Door Trim
$3.07 - $24.57
+Shipping
Alder 1x2 Inside Corner Trim piece standing upright at a slant, showing its long straight length and groove edge
Alder 1x2 Inside Corner Trim piece lying at an angle, showing the concave groove along its length and light grain
ProSaunas Alder 1x2 Sauna Inside Corner Trim
$1.36 - $10.90
+Shipping
Alder 2x2 Outside Corner Trim piece leaning upright at an angle, showing the narrow L-shaped edge and face
Alder 2x2 Outside Corner Trim piece, angled view showing the L-shaped profile and light grain along its length
ProSaunas Alder 2x2 Sauna Outside Corner Trim
$3.07 - $24.57
+Shipping
Alder 3x3 bench board standing tilted on one end, showing the face grain and a soft shadow beneath
Alder 3x3 bench board at an angle, showing the square end and long side with light, smooth grain
ProSaunas Alder 3x3 Sauna Bench Wood
$11.62 - $92.96
+Shipping
Alder 2x6 bench board propped at a tilt, showing light, even face grain and the end of the board
Alder 2x6 bench board at an angle, showing smooth face grain and a squared edge on a white background
ProSaunas Alder 2x6 Sauna Bench Wood
$10.68 - $106.85
+Shipping
Alder 2x4 bench board standing tilted on one end, showing the pale face grain on a white background
Alder 2x4 bench board at an angle, showing the face grain, long edge and rounded corners
ProSaunas Alder 2x4 Sauna Bench Wood
$5.24 - $52.36
+Shipping
Alder 2x3 bench board propped at a steep angle against a white background, showing face grain and long edge
Alder 2x3 bench board lying flat, angled view showing light face grain and the rounded edge along its length
ProSaunas Alder 2x3 Sauna Bench Wood
$4 - $40.07
+Shipping
Three alder paneling boards side by side, showing raised ridges and grooved edges on the face
Alder 2x3 tongue-and-groove paneling board at an angle, showing the stepped profile and groove along the side
ProSaunas Alder 2x3 Tongue & Groove Sauna Paneling, Large Gap
$4.81 - $38.47
+Shipping
Three alder tongue-and-groove paneling boards side by side, showing face grain and edge profiles
Alder 1x4 tongue-and-groove paneling board lying flat, angled view showing face grain and the grooved bottom edge
ProSaunas Alder 1x4 Tongue & Groove Sauna Paneling, Nickel Gap
$4 - $40.07
+Shipping

Alder sauna paneling, bench wood and trim

  • Paneling: 1x4 and 1x5 STS4 nickel gap and 2x3 Grace large gap.
  • Bench wood: 2x3, 2x4, 2x6 and 3x3.
  • Trim: inside and outside corners, door trim, T-molding, 1x1, and square and rectangular 2x2.

According to ProSaunas, alder has a uniform pore structure and even color, and its low heat conductivity keeps it comfortable to the touch in a hot sauna. The boards are sold unoiled.

Alder sauna wood next steps

Reviewed October 2026

Frequently Asked Questions

Is alder good for a sauna?
Alder is a common sauna wood. ProSaunas describes it as durable and naturally water resistant, with an even color, and says its low heat conductivity keeps it comfortable to the touch.

What alder sauna wood is available?
Paneling in 1x4 and 1x5 nickel gap and 2x3 Grace large gap, bench wood from 2x3 to 2x6 plus 3x3, and a full set of trim.

How is sauna wood shipped?
Sauna wood ships to the contiguous US at one flat freight rate per order, set by the number of boards across all the sauna wood in the cart and the length of the longest board. The rate table is in the Shipping tab on every sauna wood page. Boards over 10 ft and orders of 1,000 boards or more are quoted after you order.