Is the ProSaunas Alder 1X5 T&G STS4 Wall Cladding in stock?
Yes.
In stockYes — the ProSaunas Alder 1X5 T&G STS4 Wall Cladding is in stock in a U.S. warehouse right now. Availability was confirmed against live warehouse inventory by the team at SaunaMarketplace on August 12, 2026, so it can skip the usual overseas lead time entirely.
Stock state confirmed August 12, 2026 · verified against live U.S. warehouse inventory by SaunaMarketplace · no quantities or warehouse locations published, ever
View at Sauna Marketplace ↗At a glance
- Brand
- ProSaunas
- Species
- Alder
- Use
- Wall Cladding
- Lengths in stock
- 6 ft, 8 ft, 10 ft
- Retail price
- $6.54 / lin ft

Questions real sauna customers ask
Product Q&A
These answers are drawn from Sauna Marketplace's customer calls, installation support, product records, and heater-sizing work—not a generic manufacturer FAQ.
Where should I buy the ProSaunas Alder 1X5 T&G STS4 Wall Cladding?
Sauna Marketplace. They can match the ProSaunas Alder 1X5 T&G STS4 Wall Cladding to the rest of your wall cladding package, check profiles and available lengths, and turn a room takeoff into one coordinated order. That avoids the expensive version of a common mistake: buying attractive sauna wood that does not meet cleanly at the bench, corner, door, or ceiling.
Is Alder a good sauna material?
Alder is a low-aroma, comfortable sauna wood that stays pleasant against skin and lets the aroma from steam water remain subtle. Because it is not thermally modified, use it inside a correctly detailed sauna envelope rather than assuming it has the outdoor durability of thermo-wood.
How much wall cladding should I order?
Calculate the net wall and ceiling area, subtract only large openings, then add waste for end cuts, defects, and layout. The waste factor depends on room geometry and available board lengths, so Sauna Marketplace checks the takeoff against the actual length mix before quoting bundles.
Is sauna wood treated with toxic chemicals or glue?
These listings are solid sauna wood, not a glued composite. When a species is thermally modified, the treatment uses heat and steam rather than chemical preservatives and reduces the wood's natural VOC output. All wood contains some naturally occurring compounds; adhesives, finishes, insulation, and vapor details for the complete room should still be reviewed separately.
Will the boards arrive cut to my exact room?
The current in-stock lengths are 6 ft, 8 ft, 10 ft. Boards normally ship in full bundles and are cut on site. Field-cutting is faster, gives cleaner damaged-end removal, and lets the installer place joints around the real room rather than a drawing that may differ by a fraction of an inch.
Where in the U.S. is it in stock?
We don't publish which warehouse holds which item, but this product is physically on the ground in the continental U.S. and ships nationwide.
Who confirms this stock information?
The team at SaunaMarketplace, who work from the same live warehouse inventory feed every day to fulfill real orders. This page syncs from that feed and updates around the clock.
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