Thermory Benchmark Ash C20 Cladding – Finished in Cutek Walnut
Thermory’s Benchmark Ash Cladding – 1×6 Tongue & Groove (C20 profile) is a standout choice for exterior applications where natural beauty meets lasting performance. With a rich Cutek Extreme Walnut finish and a clean, versatile profile, this material delivers both architectural appeal and long-term durability.
Thermally Modified for Superior Stability
Benchmark Ash undergoes a chemical-free thermal modification process that enhances its durability, dimensional stability, and resistance to the elements. Rated Class 1 for durability, it rivals tropical hardwoods in performance—without the environmental impact.
Sourced from North American forests, Thermory Ash offers:
Outstanding rot and decay resistance
A straight, tight grain with minimal knots
Excellent workability and minimal movement
Finished in Cutek® Extreme Walnut
ach board is prefinished with Cutek® Extreme Walnut, a high-performance penetrating oil that highlights the natural grain of the wood while protecting it from within. This finish enhances the warm brown tones of the ash and allows for a low-maintenance, long-lasting result.
Cutek Extreme benefits include:
Deep penetration for internal protection
No cracking, peeling, or flaking
Natural aging to a soft silver patina over time, or easy reapplication to maintain the walnut tone
The C20 Profile: Clean and Modern
The C20 tongue and groove profile offers a refined, streamlined look for vertical or horizontal installations. With a square edge and subtle bevel, it’s ideal for builders and designers seeking a clean-lined finish with effortless joinery.
Ideal For:
Exterior cladding and siding
Accent walls and architectural facades
Covered porch ceilings
Custom detailing in outdoor environments
