Style archetype

Biophilic

Design that puts a human back in contact with nature. Grain, texture, and low-VOC finishes as the hero.
Biophilic design specifies timber as a wellness material, not a decorative one. The read is authentic: visible knots, medullary rays, natural tonal variation, tactile wire-brushed or oiled surface. Indoor plants, stone, natural linen and clay plaster surround the floor. Low-VOC coatings (EC1-Plus, GREENGUARD Gold) move from 'nice to have' to 'specified in the paragraph'.
Earth-neutral with at least one green note - eucalyptus, sage, olive - drawn from the surrounding plants.

Recommended species

  • Blackbutt
    Australian native, pale-straw to mid-honey, takes a raw-look coating beautifully; grown in managed Australian forests.
  • Spotted Gum
    Wavy interlocking grain, red-brown-to-grey variation, reads as living material - quintessentially biophilic.
  • Tasmanian Oak
    FSC-sourced regrowth, pale and predictable; lets architects hit sustainability metrics without exotic supply.
  • Brush Box
    Fine even grain, pinkish-brown, finishes cleanly for a softer biophilic read.

Recommended Bona finishes

  • Bona Traffic HD Raw
    Invisible-finish waterborne - the board reads as untreated timber. EC1-Plus, GREENGUARD Gold, EPD published.
  • Bona Craft Oil 2K
    Plant-based 2K oil; tactile open grain; EN 71-3 toy-safe; minimal off-gassing.
  • Bona Hard Wax Oil
    Penetrating wax-oil that lets the species do the talking and is field-repairable with local wax topping.

Sheen & stain

  • Sheen
    matt (ultra-matt preferred)
  • Stain direction
    natural, raw look, no stain

Reference projects

Projects and editorial features that define the Biophilic read. Click through to the original publication - images are linked, not hotlinked.

Mortlock Timber - Biophilic case studies (commercial)

Mortlock Timber portfolio
Mortlock Timber
View on Mortlock Timber →

Biophilic Interior Design Trends 2026

Style Sourcebook editorial
Style Sourcebook
View on Style Sourcebook →

Pitfalls to avoid

  • Heavy stain or pigmented colour kills the biophilic brief - you are covering the thing the brief asks for. Specify clear or raw-look only.
  • Solvent-based coatings undercut the low-VOC narrative; require EC1-Plus or GREENGUARD Gold on the finish spec.
  • Select-grade (knot-free) boards undermine the authenticity - character or rustic grade is correct.
  • Do not specify high-gloss. Matt or satin-matt only.

Citations

Style Sourcebook - Biophilic Interior Design Trends 2026 →Mortlock Timber - What is biophilic design in architecture →Eco Timber - Timber cladding in biophilic design →Market Timbers - 2025 sustainable design trends →

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