Thermory Ash hardwood

Thermally modified for enhanced durability and stability, Thermory Ash delivers a rich, refined look with excellent performance. Ideal for premium decking, cladding, and design-led applications.

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00041
Picture of Thermory Ash Decking 20x118mm (End Matched)

Thermory Ash Decking 20x118mm (End Matched)

Our Benchmark thermo-ash decking is exceptionally durable and dimensionally stable with a deep, rich color. It would be no exaggeration to say that Benchmark thermo-ash is the dream real wood decking material – timeless, stunning, long lasting, barefoot friendly and easy to install.

  • With its smooth finish and its rich, dark color, thermally modified ash is an exceptionally high-value wood
  • Thermo-ash boasts an aesthetically pleasing look and feel with a clean surface
  • Offering superior dimensional stability and the highest possible durability class, our thermo-ash retains rot resistance for 25+ years when installed and maintained according to Thermory's guides
  • With its low moisture absorption, thermo-ash twists, cups and bends less than untreated wood in outdoor use, with less shrinkage and expansion
  • As a non-toxic, natural material, thermally modified ash is more environmentally friendly than tropical hardwoods and man-made alternatives
  • Thermo-ash decking doesn't accumulate heat and feels pleasant underfoot
  • Thermo-ash decking is easy to maintain and comes with simple installation options
  • FSC-certified ash is available upon request
Durability class: 1 (25+ years' protection against wood decay)

00042
Picture of Thermory Ash Decking 20x95mm (Edge and End Grooved)

Thermory Ash Decking 20x95mm (Edge and End Grooved)

Our Benchmark thermo-ash decking is exceptionally durable and dimensionally stable with a deep, rich color. It would be no exaggeration to say that Benchmark thermo-ash is the dream real wood decking material – timeless, stunning, long lasting, barefoot friendly and easy to install.

  • With its smooth finish and its rich, dark color, thermally modified ash is an exceptionally high-value wood
  • Thermo-ash boasts an aesthetically pleasing look and feel with a clean surface
  • Offering superior dimensional stability and the highest possible durability class, our thermo-ash retains rot resistance for 25+ years when installed and maintained according to Thermory's guides
  • With its low moisture absorption, thermo-ash twists, cups and bends less than untreated wood in outdoor use, with less shrinkage and expansion
  • As a non-toxic, natural material, thermally modified ash is more environmentally friendly than tropical hardwoods and man-made alternatives
  • Thermo-ash decking doesn't accumulate heat and feels pleasant underfoot
  • Thermo-ash decking is easy to maintain and comes with simple installation options
  • FSC-certified ash is available upon request
Durability class: 1 (25+ years' protection against wood decay)