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THERMOWOOD ASH

Structural Grain Collection

Bold expressive grain with exceptional hardness for demanding architectural applications.

WHY STRUCTURAL GRAIN

Uncompromising Strength, Striking Beauty

North American Ash is renowned for its exceptional hardness and dramatic grain patterns. The Structural Grain Collection delivers outstanding performance for high-traffic applications while making a bold architectural statement with its distinctive visual character.

  • Dramatic, expressive grain patterns
  • Exceptional hardness and density
  • Rich brown to deep chocolate tones
  • Outstanding abrasion resistance
  • Ideal for high-traffic decking
  • Premium choice for statement facades
Structural Grain Ash timber decking detail

TECHNICAL DATA

Specifications

Species

Ash (Fraxinus americana)

Origin

North America

Treatment

Thermowood Class D

Durability Class

Class 1 (25+ years)

Density

600-680 kg/m³

Moisture Content

5-7%

Certifications

TMT Certified
FSC Certified
EPD Verified

PRODUCT RANGE

Available Products

The Structural Grain Collection offers extensive profile options for cladding, decking, and architectural applications.

Filter by Application:

Smooth T - 20x40
Ash

Smooth T

Size: 20x40mm

Length: 1500-3600mm

Installation

Grad Clips

Durability

Class 1

Nisa - 20x90
Ash

Nisa

Size: 20x90mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Triple-M - 26x92
Ash

Triple-M

Size: 26x92mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Nisa - 20x115
Ash

Nisa

Size: 20x115mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Ziza T - 20x115
Ash

Ziza T

Size: 20x115mm

Length: 1500-3600mm

Installation

Grad Clips

Durability

Class 1

Twina - 20x130
Ash

Twina

Size: 20x130mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Ziza T - 20x130
Ash

Ziza T

Size: 20x130mm

Length: 1500-3600mm

Installation

Grad Clips

Durability

Class 1

Aura - 25x130
Ash

Aura

Size: 25x130mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Triple - 25x130
Ash

Triple

Size: 25x130mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Nora - 25x130
Ash

Nora

Size: 25x130mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Nora - 25x132
Ash

Nora

Size: 25x132mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Nora T - 20x140
Ash

Nora T

Size: 20x140mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Nisaura - 26x140
Ash

Nisaura

Size: 26x140mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Nisa - 20x150
Ash

Nisa

Size: 20x150mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Twina - 20x150
Ash

Twina

Size: 20x150mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Ziza T - 20x150
Ash

Ziza T

Size: 20x150mm

Length: 1500-3600mm

Installation

Grad Clips

Durability

Class 1

Tria - 20x150
Ash

Tria

Size: 20x150mm

Length: 1500-3600mm

Installation

Tongue & Groove

Durability

Class 1

Smooth T - 21x90
Ash

Smooth T

Size: 21x90mm

Length: 1500-3600mm

Installation

Teni Clips

Durability

Class 1

Smooth C - 21x115
Ash

Smooth C

Size: 21x115mm

Length: 1500-3600mm

Installation

Side Clips

Durability

Class 1

Smooth C - 21x130
Ash

Smooth C

Size: 21x130mm

Length: 1500-3600mm

Installation

Side Clips

Durability

Class 1

Antislip T - 21x130
Ash

Antislip T

Size: 21x130mm

Length: 1500-3600mm

Installation

Grad Clips

Durability

Class 1

Smooth C - 21x140
Ash

Smooth C

Size: 21x140mm

Length: 1500-3600mm

Installation

Side Clips

Durability

Class 1

Groove T - 21x140
Ash

Groove T

Size: 21x140mm

Length: 1500-3600mm

Installation

Grad Clips

Durability

Class 1

Groove T - 21x150
Ash

Groove T

Size: 21x150mm

Length: 1500-3600mm

Installation

Teni Clips

Durability

Class 1

Showing 24 of 24 products

Experience Structural Grain in Your Project

Request a sample box to feel the exceptional quality and see the dramatic grain patterns firsthand.

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