A timber-frame — Structural Insulated Panel — is a single engineered building component that combines structure and insulation in one factory-made unit. It replaces the traditional 'stud + insulation + board' assembly with a monolithic panel that is stronger, warmer and dramatically airtight.
What's inside a timber-frame
- Outer skin: 15 mm oriented strand board (OSB), structural grade
- Core: 100-172 mm rigid PIR insulation, bonded to both skins under pressure
- Inner skin: 15 mm OSB, structural grade — identical to the outer skin
- Panel edges: CNC-milled to accept a spline joint, keeping panel-to-panel connections airtight
How they're made
insulated timber-frame builds are manufactured in factory conditions: the two OSB skins are laid flat, adhesive is applied, the PIR core is placed, and the panel is pressed for 24-48 hours to cure. The result is a single component with the strength of two structural boards and the thermal performance of a fully insulated wall — no site errors, no tolerance drift.