Shiplap

Thermory Knotty Pine is Scandinavian pine transformed through a chemical-free thermal modification process that uses only heat and steam. Sustained temperatures above 190°C fundamentally alter the wood's cell structure, driving off moisture and breaking down the organic compounds that fungi and insects feed on. The result is a dimensionally stable, rot-resistant board with a warm, deepened caramel tone and the character-rich knots that give knotty pine its signature appeal (Thermory).

To preserve that warm color and extend the wood's outdoor service life, each board is finished with CUTEK® Extreme Clear, a penetrating oil that soaks deep into the wood fibers rather than forming a surface film. Because CUTEK® works from the inside out, it stabilizes the board against moisture movement — the leading cause of cupping, splitting, and checking — without peeling or flaking like traditional coatings. The clear formulation contains no pigment, so the wood will naturally silver over time while remaining fully protected. Maintenance is straightforward: no sanding or stripping required, just a clean and re-oil when the surface begins to dry out (CUTEK®).

Ideal for exterior siding, soffits, ceilings, porch cladding, and covered outdoor living spaces where you want the authentic look of natural wood with modern durability.

Specifications