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Nails & screws

Because of LDCwood® ThermoWood® products’ pH value (acid), any fasteners must be made of stainless steel or stronger material in order to prevent corrosion. This applies to products used indoors and outdoors.


Other fasteners react with LDCwood® ThermoWood®, causing staining around the fastener. If thermally modified timber is used in combination with other materials, possible reactions between the materials must be determined.


Consult the ThermoWood® handbook for detailed installation instructions

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Tongue-and-groove end joints

End joints in LDCwood® ThermoWood® cladding refer to the points where two pieces of cladding meet at the ends. Properly managing these end joints is crucial for the overall aesthetics and durability of the cladding installation.

Grad® & B-FIX

To achieve a homogeneous good looking end result,
various hidden fastening systems are available:

  • Grad®
  • B-Fix

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LDCwood® ThermoWood® has a prolonged life and it doesn’t necessarily need a surface treatment applied to it. Some people choose to add a finish or paint to their timber to enrich its colour, but if it’s left untreated, the wood will naturally change to a silvery grey (similar to that of cedar or larch). This process will begin immediately and, depending on the amount of UV exposure, may take several months to a year. This does not make the wood less resistant to decay.

Unlike pressure impregnated wood, LDCwood® ThermoWood® can be recycled as untreated wood when it is no longer required.