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DIY Pre-Cut Saunas
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WHY CHOOSE NORTHERN LIGHTS?
100% Clear Western Red Cedar
Cedar has long been the premier sauna wood. Clear Cedar has no knots ensuring the longevity of our product products
Electric - Wood Fired - Infrared
The most heating choices to build your sauna. Choose from wood fired, infrared or our surgical stainless steel electric sauna heaters
Best Warranty
Our commitment to quality has been the conrner stone of our success. Our barrel saunas come complete with a full 5 year warranty.
Customer Support
We are Sauna Enthusiast first and foremost. Give us a call and let us help discuss all your sauna needs.
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Insulated Cedar Sauna Door with Tempered Glass Window
The precisely engineered construction uses stainless steel staples and nails to ensure the sauna doors cedar wood will never bleed from rust. Extremely well insulated, keep the heat in the sauna and reduce the sauna operating cost.
Sauna Aluminum Vapor Foil
The high-performance foil also acts as a moisture barrier, protecting sauna walls and insulation from water damage. By blocking excess moisture, it helps prevent mold growth and enhances the overall longevity of the sauna.
Sauna Heater with TKEC Digital Controller
Precisely engineered baffled shell construction provides enhanced air flow for quicker heat-up time. Straight Wall Installation or Corner Installation, allows for full customization of the sauna room layout.
High Temperature Sauna Light
Designed specifically for saunas and steam rooms. Protected with rubber gaskets, these vapor-proof sauna lights feature a powder coated base and shatter proof glass lens. For vertical or horizontal installation, on wall or ceiling.
Enhance your experience with
DIY SAUNA PACKAGE
Turn any spare room into your own personal sauna with a DIY sauna package. Includes everything to create your stay at home cedar sauna. 4' x 4' to 8' x 8' sizes available with either electric or infrared heater.
INFRARED SAUNA PANELS
Infrared Sauna Kits
ELECTRIC SAUNA HEATERS
DIY Sauna Room
ELECTRIC OR INFRARED
SAUNA HEATERS
Do you want the higher temperatures and added humidity of steam in your DIY sauna room or would you prefer the lower and dry temperature of an infrared sauna room. We have you covered! Select an of our DIY sauna rooms with either an electric sauna heater or with infrared sauna heater panels
Enhance your experience with
FINANCING WITH AFFIRM
Affirm makes it easy buy. Select your payment method term. As low as 0% interest OAC.
A DIY pre-cut sauna kit ships as a flat-packed bundle of cedar wall panels, ceiling, benches, door, heater, and all the hardware — cut to size and labeled for self-assembly in a weekend. We stock 11 indoor kits from 4×4 ft (one person, electric 4kW) up to 8×8 ft (six to eight people, 9kW heater). Prices run roughly $5,800 for the smallest and $9,900 for the largest. No carpentry experience needed — if you've assembled IKEA furniture, you can build one of these.
How to pick the right size for your space
Quick rule: figure 24-28 cubic feet per adult sitting comfortably. A 4×5 holds two people on the upper bench plus one on the lower. A 5×7 fits three to four. A 6×8 or 7×8 is family-size. The 8×8 is the largest pre-cut we make and suits four-to-six people stretched out, or sociable larger gatherings.
One trap: don't oversize. A bigger room means a bigger heater, longer warm-up (45 minutes vs 25), and higher electric bills per session. Build for the people who actually use it, not the holiday-party scenario that happens twice a year.
What's included in each kit
Every DIY pre-cut sauna ships with: tongue-and-groove western red cedar wall and ceiling boards (already milled to length), pre-built bench frames and tops, a cedar door with tempered glass insert, the heater sized to the room, sauna rocks, a thermometer, ladle and bucket, vent grilles, and the assembly hardware. You supply the framing for the four exterior walls (standard 2×4 studs), insulation, vapor barrier, electrical hookup, and the floor base.
Heater wattage matches the kit size
The heater that ships with each kit is sized for the room. 4×4 and 4×5 kits include a 4kW heater. 4×6 through 6×6 get a 5kW. 6×7 ships with 6kW. 6×8 jumps to 7.5kW. The 7×8 and 8×8 use a 9kW. All heaters on these kits are 240V — you'll need a dedicated 30-amp or 40-amp circuit depending on size, and a licensed electrician for the install.
Assembly: what to expect
Most owners finish in two weekends working alone, one weekend with a helper. Day one is framing the four exterior walls and rough electrical. Day two is the cedar interior: tongue-and-groove goes up wall by wall, ceiling, benches, then door. We label every board so it's clear where each piece goes. The trickiest part is usually getting the door jamb plumb; the rest is straightforward.
If you'd rather skip the framing, we also sell barrel sauna kits that ship as pre-assembled staves and need no framing at all.
Materials: why western red cedar
All our pre-cut kits use clear or knotty western red cedar. Cedar handles repeated heat-and-humidity cycles without warping or splintering — pine and spruce eventually crack and resin out, hemlock turns gray, but cedar weathers slowly and stays comfortable to sit on bare-skinned. Smell is the bonus: heated cedar releases the aromatic oil that gives a Finnish sauna its signature scent.
Frequently asked questions
Do I need a permit to install a DIY sauna kit?
For indoor saunas in a basement or spare room, you usually need an electrical permit for the heater circuit; the room itself rarely needs a building permit. Outdoor installations may need a structure permit depending on size. Check with your local building department.
Can I install a pre-cut kit on a concrete basement floor?
Yes — that's the most common install. You'll lay a vapor barrier and a treated 2×4 sleeper frame on the concrete, then floor with cedar duckboards or tile. The kit instructions cover this.
How long does the kit take to heat up?
With the bundled heater sized correctly, 25-35 minutes from a cold start to 170°F. Smaller rooms heat faster.
What's the difference between DIY pre-cut and a barrel sauna?
Pre-cut kits build a box-shaped room and need framed exterior walls. Barrel saunas are pre-assembled cylindrical staves that need no framing — just a level pad. Pre-cut suits indoor and basement installs; barrels suit outdoor backyards.
How long does a cedar sauna last?
25-30 years with light maintenance (occasional bench oiling, replacing rocks every 3-5 years). The structural cedar outlasts most of the people who buy it.
