Project 01 · Residential
The Blom Residence
Residential project photographed by Emily Bolt Photography
Nordic Thermowood · Milled in Greenville, SC
Real wood,
honest
price. Made to
outlast the weather.
We ship Finnish-treated, American-milled Thermowood siding, decking, and interior paneling direct to your project — no five-markup distributor chain.
Recent project
Residential — Blom
Photography: Emily Bolt
Photography: Emily Bolt
01
For architects
& specifiers
Profile drawings, spec sheets, dimensional data, and material certifications — all free to download.
Enter the spec library02
For contractors
& builders
Trade pricing, installation videos, fastener guides, and reliable 2–4 week lead times across the US and Canada.
Open a trade account03
For homeowners
& self-builders
Samples to your door, coverage calculator, patina guide, and honest prices per square foot — published online.
See how to buyWhy Thermowood
Heat and steam. Nothing else.
Our wood is treated by SWM Wood in Mikkeli, Finland — a founding member of the International ThermoWood Association — using only heat and steam at 212 °C. No chemicals, no preservatives. The process permanently alters the cell structure, turning softwood into a facade material that shrugs off weather for decades.
Dimensionally stable
Negligible swelling or shrinkage across seasons — boards stay where you install them.
Rot resistant 25+ yrs
Class 1 durability when installed per our guides. No fungi, no decay, no chemical leaching.
Chemical-free
No copper, no arsenic, no preservatives. Safe for soil contact, safe for kids, safe for the planet.
Silver-grey patina
Weathers gracefully to a warm silver, or oil it annually to preserve the deep honey-brown.
Sustainably sourced
From responsibly managed Nordic forests — chain-of-custody documentation available on every order.
Four categories
A board for every project.
From modern Nordic cladding to interior panels to sauna benches — every profile is milled from the same Finnish-treated Thermowood stock and finished at our facility in Greenville, SC.
Recent Work
Designed by architects. Built to last.
A selection of residential and commercial projects clad in Thermosticks. Photography by Emily Bolt.
Project 02 · Commercial
Norden on Stone
Urban townhome project photographed by Emily Bolt Photography
Project 03 · Residential
The Lake House
Lakefront home photographed by Emily Bolt Photography
The Price Difference
Manufacturer direct. No middle markup.
Most premium Thermowood reaches North American projects through three to five markups — an importer, a regional distributor, a lumberyard. We treat it in Finland, mill it in Greenville, and ship it directly. Same Nordic material. Same ThermoWood Association standard. Roughly half the per-square-foot price.
See full pricing
Pine TG Cladding, 3/4" × 5-1/2", per sq ft
Thermosticks Pine TG
Manufacturer direct
$6.70
Typical imported Thermowood
Through distributor
$10.20
Premium imported Thermowood
Through distributor
$11.40
SAMPLES
The sample box. At your door in a week.
Eight 8-inch boards from across all four categories, plus color cards showing fresh-milled tone and naturally weathered patina. Held in a craft box you won't want to throw away.
- Pine, Radiata, Ayous, and Aspen samples
- Fresh-milled and weathered color cards
- Profile cross-section cards
Shipping only
Order a Sample Box
A partnership between Sticks Supply Co. and SWM Wood in Finland
International ThermoWood® Standard
SWM Wood · Mikkeli, Finland
Milled in Greenville, SC
US & Canada shipping
2
Continents. One process.