One trim piece. Four inside corners in a typical sauna. The difference between a finished build and a beautiful one.
The PROSAUNAS Thermo-Aspen 1×2 SI Inside Corner Trim sits into the 90-degree joint where two cladded walls meet. At 0.55″ thick and 1.18″ wide, it’s sized to cover the raw tongue-and-groove edges at a standard inside corner without being chunky. Available in 1 ft and 8 ft lengths.
Why Thermo-Aspen
Inside corners collect moisture. It’s where the steam and the condensation pool between sessions, and untreated wood at a corner joint tends to swell and open over time. Thermal modification (heat and steam, no chemicals ever) changes the aspen at a cellular level so it simply can’t absorb moisture in the same way. The corner stays tight. The color, a warm golden-brown, runs all the way through the wood so cut ends match the face and nothing reads as a patched-in afterthought.
Worth knowing: this trim covers the joint, but it doesn’t replace good cladding installation at the corner. If your wall boards aren’t seated solidly at the edge, the trim can telegraph the unevenness. Take the time to get the corner cladding right before installing this piece.
Specifications
- SKU: PS-THERMO-ASPEN-1X2-INSIDE-CORNER-TRIM-SI
- Species: Thermally modified aspen
- Profile: SI inside corner trim
- Thickness: 0.55″
- Width: 1.18″
- Available lengths: 1 ft, 8 ft
- Price: $1.58 per linear foot (MAP)
- Made in: Estonia
Where it goes
Every inside corner where two cladded walls meet. Floor-to-ceiling on each corner joint. Pair with the VA outside corner trim where walls meet at an exterior angle, and the UK door trim around the frame, and the whole room reads as a single planned system.
Shipping and samples
Sold by the linear foot. Shipping is a flat $795 to the continental US, or free when you order with a heater. Free samples available. Text your name and address to (844) 565-1113.
Call Ben² at (844) 565-1113 if you’d like to talk through the board count before you order.
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