Enhance your living spaces with the timeless appeal of shiplap from Mason’s Mill & Lumber Co. Designed to bring rustic charm and warmth to any interior, our high-quality shiplap adds character and sophistication to your home. Choose from a variety of styles and finishes, each crafted to complement a range of design preferences and architectural aesthetics.
Thermory Clear Pine is a premium, knot-free grade of Scandinavian pine that undergoes the same chemical-free thermal modification process as Thermory's character-grade boards — heat and steam sustained above 190°C — but is milled from carefully selected clear stock. The result is a smooth, uniform board with a rich, even caramel-brown tone and virtually no knots or visual interruptions, making it the go-to choice for projects where a refined, architectural appearance is as important as long-term performance. Thermal modification permanently reduces the wood's ability to absorb moisture and eliminates the food source that fungi and insects rely on, delivering Class 1 rot resistance without any chemical preservatives (Thermory).
Each board is finished with CUTEK® Extreme Clear, a penetrating oil engineered specifically for dimensionally stabilizing exterior wood. Unlike surface coatings that sit on top of the board and eventually peel, crack, or flake, CUTEK® carries its stabilizing oils deep into the wood fibers where they work continuously to reduce moisture movement — the primary driver of cupping, warping, and end-checking. The clear formulation adds no pigment, allowing the warm caramel tone of the thermally modified pine to show through initially, then transition gracefully to a silver-gray patina over time while the board remains fully protected beneath the surface. Reapplication requires no sanding or stripping — simply clean the surface and re-oil when it begins to look dry (CUTEK®).
Best suited for high-visibility exterior applications where a clean, contemporary wood aesthetic is desired: modern siding, feature walls, soffits, porch ceilings, and covered outdoor living areas.
| Spec | Detail |
|---|---|
| Species | Scandinavian Pine (thermally modified) |
| Product Line | Thermory Clear Pine |
| Modification | Thermo-D (chemical-free, heat + steam) |
| Grade | Clear / architectural grade (knot-free) |
| Finish | Cutek Extreme Clear (penetrating oil) |
| Finish Type | Oil-based, non-film-forming |
| Color | Warm caramel brown (weathers to silver-gray if not re-oiled with colortone) |
| Rot Resistance | Class 1 (highest durability class per EN 350) |
| Dimensional Stability | Significantly improved vs. untreated pine |
| Warranty | 25-year limited warranty against rot and decay (Thermory) |
| Applications | Modern exterior siding, feature walls, soffits, porch ceilings, covered decks, architectural cladding |
| Maintenance | Clean and re-oil with CUTEK® Extreme as needed — no sanding or stripping required |
| Sustainability | FSC-certified options available; chemical-free modification process |
| Origin | Sourced and modified in Estonia / Northern Europe |