Doors are not just partitions, they are the first physical contact between a space and its occupants. Our natural grain solid wood doors reject the sterility of manufacturing consistency and instead embrace the natural patterns of wood, such as growth rings, rays and reactions.
Sources of raw materials
Each door begins with a selected wood that serves as a biographical marker:
Old Wood Radial Grain: Vertical grain of 80-year-old hardwood (white oak, black walnut, hinoki) that has been slightly worn to maintain its dimensions.
Reactive Wood: Pressed and tensioned wood strategically positioned to resist seasonal movement.
Ethical Timber: FSC-certified forests with blockchain-based supply chain tracking from stump to fork.
Surface Taxonomy
Surface treatment processes enhance the wood's natural properties through controlled interventions:
Anatomical Dissemination
Radial Sawing: A layered structure is created by planing a tangential plane at a 22.5° angle to the annual rings.
Cambium treatment: Delicate knife cutting technique preserves the transitional fibers between the softwood and the heartwood.
Climate Imitation
Moisture-sensitive coating: A unique blend of tung oil and pine resin allows a 4% dimensional change without cracking.
UV-Accelerated Rusting: The Nordic surface develops a silvery-gray tone, equivalent to 10 years of natural wear in 18 months.
Touch Mapping
Microtopographic Mapping: A 120 to 3,000-grit sanding cycle creates a touch reference point along the grain of the wood.
Differential Hardening: Ammonia evaporation emphasizes the difference between early and late wood in ring-hole wood.
Acoustic & Thermal Profiles
| Parameter | Performance Data |
|---|---|
| Sound Transmission | STC 35 (125-4000 Hz spectrum) |
| Thermal Bridging | R-value 4.5 (45mm core) |
| VOC Emission | 0.02 mg/m³ (72hr chamber test) |
Joinery Epistemology
The framework employs evolutionary joinery strategies:
Biaxial Dovetails: Accommodates cross-grain movement in Z/Y axes simultaneously.
Kerfed Miter Joints: Laser-cut relief channels permit 0.8° seasonal rotation.
Hysteresis Dampers: Brass-inserted mortises absorb kinetic energy from door operation.
Patina development protocol
A 5-phase aging matrix guides the long-term aesthetic evolution:
Years 0-3: Oil penetration (depth: 0.8 mm/year)
Years 4-7: Surface polymerization (link density: 85%)
Years 8 and beyond: Microcrack formation (Crack distance: 120–150 µm)
Biomechanical interface
Ergonomic studies provide information on grip position:
Tensile strength enhancement: 12–15 N resistance calibrated for grip strengths ranging from the 5th percentile in women to the 95th percentile in men
Palm contour mapping: Hand radius reflects the curvature of the thenar/hypothynar mounds in 400 anthropometric scans