Thermo-treated ash cladding offers a clean, modern finish with the natural character of hardwood — combining beautiful grain with enhanced durability for long-term exterior use. Through high-temperature treatment (THT), the wood gains resistance to moisture, insects, and decay — all without any chemicals.
Available in three profiles — smooth-faced, grooved, or textured — this cladding is ideal for façades, garden buildings, or architectural projects where performance and aesthetics both matter. Supplied in continuous lengths, this ash cladding will naturally age to a soft silver tone or can be finished to your specification.
✦ Species: French ash, thermo-treated at high temperature (THT)
✦ Profiles: Flat, Grooved & Textured
✦ Dimensions: 21 mm thick × 140 mm total width (visible face: 130–140 mm)
✦ Lengths: 1200 / 1600 / 2000 / 2400 mm; 80% are 2000 mm and above
✦ Format: Supplied as continuous lengths (no end joints)
✦ Durability: Naturally resistant to insects, fungi, and moisture
✦ Appearance: Smooth, structured, or textured surface that will weather to a uniform grey or can be finished to preference
✦ Eco Profile: 100% natural hardwood with non-chemical thermal treatment
