Tuli

About the Tuli 7.5×12 Sauna

The Tuli 7.5×12 is Northern Steam’s most popular model—designed for homeowners who want a modern, high-performing sauna built with real Finnish influence and Minnesota craftsmanship. Our team grew up around traditional wood-fired saunas, so every Tuli is made to honor that heritage: clean lines, natural wood interiors, efficient heat, and a calming aesthetic that feels authentic the moment you step inside.

Hand-built in Cokato, MN, the Tuli combines boutique craftsmanship with durable materials built for Midwestern weather. Inside, you’ll find STK cedar cladding, comfortable cedar benching, warm ambient lighting, a bronze glass door, and a large 4’×5’ steam-room window that welcomes natural light into your session. Choose between the iconic IKI Mini wood stove or the powerful 9kW IKI Pillar electric stove with WiFi controls — both capable of producing the rich, smooth löyly that defines a true Finnish sauna.

But the Tuli is more than a structure. It’s a wellness retreat designed to give you years of consistent, restorative heat with minimal maintenance. Every detail is crafted, not rushed — yet our small-batch, streamlined build process means your sauna is completed in as little as 1–2 weeks once construction begins. Quality and speed, without compromise.

If you’re looking for a timeless backyard sauna that blends modern design with authentic performance, the Tuli 7.5×12 delivers on every front.

Standard Features (Included in Base Model)

• Dimensions: 7.5’ × 12’ with full steam room + front porch entry
• Roof: Black metal roofing
• Exterior: LP SmartSide vertical 8" O.C. siding
• Stove Options:
  • IKI Mini Wood Stove
  • IKI Pillar 9kW Electric Stove with WiFi controls
• Window: 4’ × 5’ single-pane tempered glass window
• Steam Room Door: Tinted bronze glass door
• Interior: STK cedar cladding with cedar benches
• Lighting (Wood Stove Models): Two dimmable can lights + 120V plug-in
• Lighting (Electric Models): Fully pre-wired for electrician hookup + WiFi controller
• Note: Base model does not include soffits or overhangs

Quick Specs Snapshot (At a Glance)

• Footprint: 7.5’×12’
• Structure: Wood-framed, insulated
• Interior Wood: STK cedar
• Exterior Siding: LP SmartSide
• Roof: Black metal
• Heat Source: Wood or electric
• Window: 4×5 tempered
• Porch: Small entry porch included
• Build Time: 1–2 weeks once started

Base Model Price

$22,500 + local tax & delivery

This includes all standard features listed above.

Delivery Information

Delivery costs vary depending on:

• Distance from Cokato, MN
• Property access
• Driveway or terrain constraints

More complex deliveries may require additional equipment or labor.
We provide a personalized delivery estimate before your project begins.

Available Upgrades

Customize your Tuli with premium upgrades and performance enhancements:

• 8” overhangs with stained cedar T&G soffits
• IKI Mini “Plus” rock cage (wood stove only)
• Clear cedar benching
• Douglas fir door with lock
• Larger steam room window
• Under-bench LED lighting (electric only)
• Vertical cedar accent walls
• Standing seam metal roof
• Extended porch (+6")
• Premium interior woods (Clear Cedar, Aspen, etc.)
• Vertical interior wood installation

If you have something in mind that isn’t listed, we can customize most aspects of the Tuli.

Site Prep Requirements

Your sauna will last longer and perform better with a solid, level base. Acceptable foundations include:

• 4–6” compacted Class 5 gravel pad (most popular & cost-effective)
• Concrete helical piers
• Concrete slab
• Paver patio

Key site prep notes:

• Base must be level and stable
• Access must allow a trailer or skid loader
• We can provide exact pad dimensions and guidance

Lead Times & Build Process

We aim to keep your timeline predictable and stress-free.

• Build time: 1–2 weeks once your sauna enters production
• Typical booking lead time: ~4 weeks (varies with season)
• Deposit: 50% deposit secures your build slot
• After deposit: You’ll receive a written confirmation, delivery estimate, and any final customization options

We communicate clearly throughout the process so you always know what’s next.

Why Choose Northern Steam

• Authentic Finnish-inspired design shaped by real sauna culture
• Handcrafted quality from a small team that builds each unit start-to-finish
• Fast turnaround times without sacrificing craftsmanship
• Premium materials selected for MN climate
• Fully customizable models — adjust layout, wood species, lighting, and more
• Honest pricing, clear communication, and no surprises

We don’t mass-produce. We craft saunas the right way.

Customer Reviews

"Jaden and his team did a fantastic job with our sauna. The communication throughout building and delivery were top notch- and we’re very happy with the finished product. We couldn’t recommend them enough!!"
— Natalie Z.

Ready to Get Your Tuli Sauna?

Your custom-built outdoor sauna is only a conversation away.
Send us your details and we’ll get you a fast, accurate quote — no pressure, no obligations.