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Thermally Modified Wood Cladding

Long-Lasting, Low-Maintenance, Eco-Friendly Siding
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    What Is Thermally Modified Wood?

    TMD is real wood that has been heated to ≈400 °F (≈200 °C) in an oxygen-free kiln, then re-balanced with steam.

    This heat alters the cell walls, drives out sugars that attract insects, and cuts the wood’s ability to absorb moisture. The result is a board that stays straight, shrugs off decay, and contains zero added chemicals.

    Why Homeowners Choose TMD Over Cedar, PVC & Composites?

     

    Benefit

    How It Helps Your Home

    25-year service life above ground

    Re-side once, enjoy for decades. 

    Up to 60 % less swelling & shrinking

    Boards stay flat; joints stay tight. 

    Class 1 decay resistance

    Resists rot, mold, and wood-boring insects without toxic biocides. 

    Lightweight & easy to cut

    Installs with standard carpentry tools—DIY-friendly. 

    Cooler under the sun

    Lower heat gain than composites; barefoot-safe on hot days. 

    Sustainably sourced

    FSC / PEFC options and a process that emits no VOCs. 

    • Profiles: shiplap, tongue-and-groove, open-joint rainscreen, custom reveals.

       

    • Orientations: vertical, horizontal, or mixed patterns.

       

    • Widths: 4” – 8” nominal.

       

    • Species & tones: thermally-modified ash, pine, spruce, or oak—from warm golden browns to deep espresso.

       

    • Factory finish options: clear oil, UV-blocking pigments, or arrive bare to weather into a silvery patina.

    Design Freedom

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    Performance & Maintenance at a Glance

     

    • Finishing: A clear oil every 3–5 years if you wish to lock in the original color; skip it if you like natural greying.
    • Cleaning: Hose or soft-brush wash—no power-washing or solvent strippers needed.
    • Fasteners: hidden clip systems or face-screws in stainless steel.
    • Warranty: 25-year limited against rot and structural failure when installed to guide.

    Fire rating: can meet Class B with factory-applied FR coating—ask our team for details.

    Premium quality

    Sustainability You Can See

    • Pure heat-and-steam process—no plastics, no heavy-metal preservatives.

       

    • Manufactured from rapidly renewable, North-American timber; every cubic foot locks away ~20 kg of CO₂.

       

    • Boards are 100 % recyclable or compostable at end of life.

     

    Frequently Asked Questions

    Question

    Quick Answer

    Will it warp or cup?

    Dimensional change is reduced by ~60 %, so boards stay flush even through four-season climates.

    Do I have to oil it?

    Only if you want to maintain the original tone. Structural performance is unaffected either way.

    How does cost compare to cedar?

    Up-front price is similar to clear-grade cedar; lifetime cost is lower because TMD lasts longer and needs less upkeep.

    Is it safe for kids & pets?

    Yes. It’s food-contact safe—no added resins, no VOC off-gassing.

    Can I install it myself?

    If you can hang standard wood siding, you can hang TMD. Boards arrive dried, straight, and end-matched to speed installation.

     

    Ready to Upgrade Your Façade?

    Request a free sample kit or a no-obligation quote today—see, touch, and smell the difference that thermally modified wood can make to your home.

    Fast U.S. delivery • Technical support every step of the way

    Contact us today

    Explore our range and discover how much you can transform your outdoor space. For more information on decking prices, materials, and to buy the ideal flooring for your Irish home, simply leave a request on our website. Let's create your dream outdoor space together!

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