Our entire exterior range is thermally modified — a natural process using only heat and steam that dramatically improves dimensional stability, durability and resistance to weathering. No chemicals. No preservatives.
Thermal modification changes the cell structure of the timber permanently, making it far more resistant to moisture movement, rot and decay than untreated alternatives — while retaining all the warmth and character of natural wood.
Fourteen profiles for any facade system — from classic DVS tongue-and-groove to expressive Rhombo, Blockbohlen and Barel. Suitable for horizontal, vertical and diagonal installation on residential and commercial facades.
Five profiles with concealed fixing systems as standard — no visible screws, clean finish. SENOFIX, TENI and TRUST LIGO fixings are engineered specifically for thermally modified timber where surface screws are not recommended.
Structural and finishing timber for garden rooms, pergolas, fencing, and external framing. Our Thermo Taeda and Thermo Pine grades are particularly suited to load-bearing applications.
Thermal modification is a purely natural process. Timber is exposed to high heat and steam in a controlled environment — no chemicals, no preservatives, nothing artificial. The result is a material that outperforms most treated alternatives and is completely safe for residential and commercial use.
Species guide, profiles, standard dimensions and technical data. Available as PDF for your project or planning files.
Thermal modification uses only heat and steam — no chemicals — to permanently alter the wood's cell structure. The result is timber that absorbs significantly less moisture, resists rot and insect attack, and remains dimensionally stable in changing weather conditions.
We supply tongue-and-groove, shiplap, open-joint and shadow gap cladding profiles. Grooved and smooth decking boards are available for terraces. Custom widths, profiles and lengths are available on request.
Thermo Pine and Thermo Spruce are the most widely used for facade cladding — both offer excellent durability and stability. Thermo Ash is the premium choice where aesthetics and hardness are priorities.
Thermo Ash offers outstanding natural hardness and striking dark tones — ideal for high-end decking. Thermo Taeda is a high-density option with exceptional load-bearing properties. Thermo Radiata is a versatile all-rounder suited to most outdoor applications.
Thermally modified timber requires significantly less maintenance than untreated alternatives. It can be left to weather naturally to a silver-grey patina, or treated with oil to retain its original tone. No preservative treatments are required.
Yes. We supply structural and finishing timber for garden rooms, pergolas, fencing and external framing alongside our cladding and decking range. Contact us with your project requirements.
Send us your specifications and we'll come back with pricing and lead times within one business day. Samples available on request.