Transform your sauna into a stunning retreat with PROSAUNAS Thermo-Spruce 1X4 T&G STP sauna wall wood. This thermally-modified spruce brings durable, rustic charm to any sauna space, built for serious enthusiasts who value style that lasts.

Key Features & Design

• Thermally-modified spruce showcases a rich amber color and beautifully figured knotty appearance that brings traditional rustic charm to any sauna space.
• The thermal modification process uses heat, steam, and pressure to organically enhance the wood's properties, making it incredibly water-resistant, dimensionally stable, and naturally protected against decay, pests, and harmful fungi.
• The STP profile creates refined wall surfaces with narrow grooves between broad cladding boards, featuring rounded edges that deliver a sophisticated look you'll admire for years to come.
• 1X4 T&G STP sauna wall wood—with tongue-and-groove design for a seamless fit and a clean, professional install.
• Sourced from the finest forests of Northern Europe and Canada, this premium tongue-and-groove wood meets the stringent quality standards that PROSAUNAS has maintained for over 55 years.
• Whether you're building a new sauna or renovating an existing one, this thermally-modified spruce delivers the perfect combination of durability, beauty, and performance that serious sauna enthusiasts demand!
• Enjoy a sauna interior that remains visually stunning and structurally sound for years, even under constant exposure to heat and humidity.
• Gain peace of mind knowing your sauna investment is backed by over 55 years of trusted craftsmanship and uncompromising quality from PROSAUNAS.
• Offers the perfect moisture level for lasting durability and comfort in your sauna.
• Features smooth, rounded edges for a comfortable and safe sauna experience.
• Designed to resist warping, ensuring long-lasting durability for your projects.
• Is free from chemicals, making it a safe and natural choice for your sauna.
• FREE USA SHIPPING.
• Your PROSAUNAS THERMO-SPRUCE 1X4 T&G STP SAUNA WALL WOOD WILL BE PACKED AND SHIPPED WITHIN 1-3 BUSINESS DAYS AND DELIVERED TO YOU BETWEEN 5-10 BUSINESS DAYS.

Upgrade your sauna with a wood that performs under heat and humidity while maintaining timeless aesthetics. PROSAUNAS brings you decades of expertise and a finish you’ll be proud to show off in your wellness space.