Interiors
Walls that feel like furniture.
Knot-free aspen and pine paneling for walls, ceilings, and feature surfaces. The roast color comes from the kiln, not a stain — and the boards stay flat through every heating season.
Why thermowood inside
Made for the rooms you live in.
Stability
Flat through the heating season
Interior wood suffers most in winter, when forced air drops humidity through the floor. Thermowood's halved moisture movement means panel gaps stay even from January to July.
Air quality
Nothing to off-gas
Heat and steam are the whole recipe — no formaldehyde binders, no surface chemistry. Just wood, in the room where your family breathes.
Color
Roast tone, no stain
The warm brown runs through the full board. Leave it raw for a matte, Nordic look, or oil it to deepen the tone — there's no finish to chip or refresh.
Surfaces
Walls, ceilings, features
One profile handles accent walls, full rooms, and ceiling runs. It's the same material we cut for saunas — graded for close viewing and touch.
The program
Priced by the room.
Send wall or ceiling dimensions and we'll price the run with a cutting allowance, delivered to your zip, within one business day.
Interior program
| Species | Aspen, pine |
| Profile | STS4, 5/8" |
| Face width | 3-1/2" |
| Grade | Knot-free |
| Finish | Raw or oiled |
| Lead time | 2–4 weeks |
Send the room dimensions and we'll price the paneling within one business day — samples first if you'd like to see the grain in your own light.