An Important Note on Pricing and Returns:
We believe in upfront pricing and fair policies—no hidden fees, no surprises, and easy, transparent
returns. If you're comparing options, we encourage you to review competitors’ fine print carefully.
We've helped countless customers who had issues elsewhere, and we’re here to make sure that never
happens to you.
Official Distributor
An Important Note on Pricing and Returns:
We believe in upfront pricing and fair policies—no hidden fees, no surprises, and easy,
transparent returns. If you're comparing options, we encourage you to review
competitors’ fine print carefully.
We've helped countless customers who had issues elsewhere, and we’re here to make sure
that never happens to you.
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Monthly payments start at: $1.00/mo Learn More
Ships in 1-5 days at most
Includes $373.99 in bonuses with your order
The Primal Reset Guide
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$349Free
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PROSAUNAS Alder 1×4 STS4 T&G is a premium sauna cladding wood designed to deliver a clean, refined finish across walls and ceilings. With its tongue and groove construction and subtle nickel-gap profile, it creates a consistent look while allowing for natural expansion.
Alder is appreciated for its warm color, fine grain, and low resin content, making it comfortable to the touch even in high sauna temperatures. Its stable structure supports long-term performance in environments with constant heat and humidity.
Each board features the STS4 profile, providing tight alignment with a slight shadow gap for visual depth. Its precise dimensions and smooth machining ensure easy installation and seamless integration with other sauna materials.
PROSAUNAS selects high-quality Alder timber to maintain consistent tone, smooth texture, and reliable durability. The result is a practical and elegant wall material suited for both residential and commercial sauna interiors.
| Feature | Benefit - Why It Matters to Your Build |
|---|---|
| Alder Sauna Wood | Naturally warm hardwood ideal for sauna interiors - provides a smooth feel, low resin content, and comfort in high temperatures. |
| STS4 Nickel-Gap Profile | Subtle spacing between boards - creates a clean shadow line while allowing for natural expansion. |
| Tongue & Groove System | Interlocking board design - ensures secure installation and consistent panel alignment. |
| Wall & Ceiling Cladding | Designed for full surface coverage - delivers a seamless and uniform interior finish. |
| Performs in Sauna Environments | Withstands heat and humidity changes - maintains stability over time. |
| Smooth Planed Finish | Evenly surfaced boards for a refined look - enhances both comfort and appearance. |
| Consistent Tone & Grain | Fine, uniform texture - creates a balanced and cohesive visual style. |
| Durable & Stable Wood | Less prone to warping or shifting - supports long-term performance. |
| Easy Installation | Precision-cut boards fit together smoothly - simplifies setup and reduces effort. |
| Ideal for Sauna Interiors | Combines function and aesthetics - perfect for both modern and traditional sauna designs. |
Three reasons sauna builders prefer Alder for clean wall and ceiling finishes.
Alder performs reliably in elevated temperatures. Its stable structure helps reduce warping and movement - keeping panels straight and evenly aligned over time.
With low resin content and balanced moisture response, Alder handles humidity well. This supports long-term durability and consistent performance in sauna conditions.
The STS4 nickel-gap profile adds subtle shadow lines and depth. Paired with Alder’s warm tone and smooth surface, it creates a refined and cohesive sauna interior.
Wood products ship via standard freight. Shipping cost is calculated based on order quantity, board lengths, and your delivery location — it is not included in the listed price and will be quoted separately.
Our team has 55+ years of experience helping builders select the right wood. We're happy to help you calculate quantities, confirm sizing, or get a shipping quote.
Call: (800) 957-2862
Email: info@peakprimalwellness.com
Mon–Fri 8:00am–5:00pm CT
PROSAUNAS carefully selects only the finest wood from Northern Europe and Canada, ensuring quality and consistency that meets our stringent standards. Every board is inspected before it ships — because a great sauna starts with great materials.
Support
Nearly impossible to reach a real person. Endless chatbot loops, auto-replies, and unreturned emails.
Real humans. We answer quickly. Always here, always helpful
Order Processing
Orders often sit for days before being acknowledged. No clear confirmation, updates, or timelines.
Orders are processed immediately. You'll receive confirmation, tracking, and real-time updates within hours.
Shipping
Slow, vague, and unoptimized. Basic carriers, minimal tracking, and delayed delivery windows.
Fast, insured, and fully trackable shipping — optimized for speed and visibility every step of the way.
Pricing
Hidden fees, bait and switch tactics, post purchase price increases.
Our relationships guarantee the lowest prices. Transparent and fair. No surprises at checkout, and no shady
tactics after the sale.
Returns & Warranty
Policies are confusing and designed to frustrate, delay, and deny returns with zero accountability.
Clear, honest, and fast. Our return policy is built to protect your investment, not dodge responsibility.
Support
Frustrating automated responses
Fast, helpful and always supportive
Order Processing
Delays and lack of communication
Instant processing and updates
Shipping
Slow, unreliable and delayed service
Fast, insured, trackable shipping
Pricing
Deceptive pricing practices
Lowest prices, no surprises
Return & Warranty
Frustrating, misleading return policies
Clear, honest return policy
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Get the delivered price in writing before payment, "freight quoted after purchase" is the oldest move in the category.
Ask for a name, if nobody owns your order, nobody owns your problem.
What comes with every order
Bonus 1
Stop guessing and start your wellness journey with a plan. The Primal Reset Guide gives you a clear framework for building consistent routines, understanding your sessions, and staying on track as you progress. Instant delivery to your inbox after purchase.
Bonus 2
Your large order ships fully insured, so you're covered from our warehouse to your door. If something goes wrong, you don't have to spend hours on the phone with FedEx or the manufacturer. Our Shipping Concierge Service handles the calls, claims, and coordination for you, using our established relationships to get solutions moving faster. Inspect your delivery before signing off and document any damage right away.
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