ProSaunas THERMO-ASPEN GROOVE-S 1X3 (15mm x 60mm) T&G | Sauna Wood, Thermally-Modified, Tongue & Groove, Fluted Slat, Wall Material
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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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Textured Lines. Modern Depth.
PROSAUNAS Thermo-Aspen Groove-S 1×3 T&G is a premium sauna wall panel designed to bring both structure and visual interest to interior surfaces. With its tongue and groove construction and fluted slat profile, it creates a seamless installation while adding subtle depth and rhythm to walls and ceilings.
Thermally modified Aspen enhances durability and dimensional stability, making it ideal for sauna environments. The heat treatment process reduces moisture absorption and enriches the wood’s natural tone, ensuring consistent performance under high heat and humidity.
Each board is precisely machined for accurate alignment and easy fitting. The Groove-S profile introduces a refined linear texture, offering a contemporary aesthetic while maintaining the clean continuity expected from tongue and groove systems.
PROSAUNAS selects high-quality Aspen to deliver uniform color, smooth finish, and dependable longevity. The result is a versatile cladding solution suitable for both residential and commercial sauna interiors.
Features & Benefits
| Feature | Benefit - Why It Matters to Your Build |
|---|---|
| Thermo-Aspen Cladding Wood | Heat-treated hardwood for sauna interiors - improves stability, deepens tone, and minimizes moisture response. |
| Groove-S Slat Profile | Fluted surface design - introduces linear texture and visual depth across panels. |
| Tongue & Groove System | Interlocking board construction - ensures tight joins and smooth alignment. |
| Wall & Ceiling Application | Designed for full interior coverage - creates a continuous and cohesive finish. |
| Reliable in Sauna Heat | Performs under high temperatures and humidity - maintains shape and durability over time. |
| Textured Planed Surface | Smooth finish with fluted detail - enhances both comfort and visual appeal. |
| Consistent Color & Grain | Uniform thermally modified tone - delivers a warm, balanced interior look. |
| Stable & Durable Build | Reduced warping and movement - supports long-term sauna performance. |
| Easy to Install Boards | Precision-milled dimensions - allow quick fitting and clean installation. |
| Enhances Sauna Design | Adds depth and modern character - elevates overall interior style. |
Why Choose Thermo-Aspen Groove-S Cladding for Your Sauna Interior?
Three reasons sauna designers select fluted panels for modern walls and ceilings.
Performs in High Heat
Thermally modified Aspen is engineered for sauna temperatures. Its improved stability limits expansion and contraction - helping panels stay aligned and secure.
Handles Humidity with Ease
The heat-treatment process reduces moisture absorption. This minimizes the risk of warping, supporting long-term durability in sauna environments.
Textured Modern Appearance
The fluted slat profile adds depth and clean lines. Its warm tone and subtle grooves create a contemporary look that enhances overall sauna design.
Specifications
What's Included
- Thermo-Aspen 1×3 Cladding Board
- Groove-S Tongue & Groove Profile
Shipping Information
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.
- Standard freight shipping on all wood orders
- Shipping cost varies by order size and destination
- Contact PROSAUNAS for a freight quote before ordering
- Bulk orders may qualify for volume pricing
- All orders inspected before shipment for quality assurance
📞 Have Questions?
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
The PROSAUNAS Quality Promise
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.
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