Sauna Bench Wood

Sauna bench wood here is ProSaunas lumber smooth on four sides for bench seats, backrests and frames: 2x3 to 2x6 boards and square 3x3 stock in aspen, alder and Thermo-Aspen, plus Thermo-Spruce, Thermo-Radiata Pine, Western Red Cedar and hemlock. Most come in lengths from 1 ft up to 10 ft.

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Sauna bench wood sizes by species

Sauna bench wood: nominal sizes in each wood
Species	Sizes
Aspen	2x3, 2x4, 2x6, 3x3; 2x5 in Midnight Black
Thermo-Aspen	2x3, 2x4, 2x6, 3x3
Alder	2x3, 2x4, 2x6, 3x3
Thermo-Spruce	2x4, 2x6
Thermo-Radiata Pine	2x6
Western Red Cedar	1x4, 1x6, 2x4, 4x4
Hemlock	1x4, 1x6, 2x4

Nominal and actual bench board sizes

The size in a bench board's name is nominal; the actual measurements are on each product page and differ by wood. An Aspen 2x4 measures 1.1″ × 3.54″ and an Alder 2x6 1.1″ × 5.51″, while a Western Red Cedar 2x4 measures 1.5″ × 3.5″. Plan bench spacing from the actual widths.

What sauna bench wood is used for

ProSaunas mills its bench wood smooth on all four sides and eases the edges, softening them for comfort against bare skin, and recommends it, depending on the board, for sauna benches, backrests, skirts and floors. The square stock carries the load: ProSaunas suggests the 4x4 Western Red Cedar for bench legs, bench supports or a support beam. Cedar 2x4 comes in a clear grade and in select tight knot, which shows defined tight knots and a more pronounced grain.

Which wood for sauna benches

Benches are the surfaces skin touches most, so the wood's feel in the heat matters. ProSaunas describes aspen and alder as having low heat conductivity, so they stay comfortable to the touch, and aspen as not secreting resin or splintering.

Sauna bench wood next steps

Walls to match: sauna paneling comes in the same species.
Finishing edges and corners: see sauna trim.
Sizing a bench layout: send your plan to Topture's Lifetime Expert Support.

Reviewed October 2026

Frequently Asked Questions

What wood is good for sauna benches?

Aspen and alder are common choices, and Topture also sells bench wood in Thermo-Aspen, Thermo-Spruce, Thermo-Radiata Pine, Western Red Cedar and hemlock. ProSaunas describes aspen and alder as having low heat conductivity, so they stay comfortable to the touch in a hot sauna.

What size is a 2x4 sauna bench board?

It depends on the wood, and each product page lists the actual size. An Aspen 2x4 measures 1.1 by 3.54 inches, while a Western Red Cedar 2x4 measures 1.5 by 3.5 inches.

How is sauna wood sold?

By the board. Each product page offers the board in lengths, and you set the number of boards with the quantity selector. The name of a board, such as 1x4, is its nominal size; the page lists its actual thickness and width in inches.

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.