
Cross Modified Wood For Lasting Performance
Next-Generation Modification
Xmodified™
The Thermo3™ modified wood offers maximum Durability Class 1 performance for Use Class 3A outdoor, above-ground applications such as Siding. However, it does not offer protection against termites and cannot be used for high moisture/water applications such as Use Class 4 in-ground contact (e.g. poles, sleepers) or Use Claas 5 Marine use (e.g. docks).
XModified™ is a unique and groundbreaking new technology developed by WTT, offering cost efficient industrial protection for heavy duty wood applications without any use of biocide chemicals. It is based on smart combinations of Thermo3™ thermal modification and other types of wood modification such as Furfurylation or Lignin modification. With simple low capital expenditure add-ons to a Thermo3™ system, it is possible to efficiently produce a full range of thermally modified and heavy duty Xmodified™ wood products.


APPLICATIONS AND SUSTAINABILITY
Versatile solutions for multiple markets
Xmodified™ wood is suitable for a wide range of applications, including:
•Facade cladding and siding
•Decking and terraces
•Fencing and posts
•Gardening e.g. sleepers
•Heavy duty applications in agriculture and horticulture
•Marine applications e.g. boardwalks
•Termite / insect exposed applications
•Non leaching outdoor polymeric fire retardant applications e.g. high-rise buildings
WHY CHOOSE Xmodified™?
Most advanced and cost efficient heavy duty modification on the market
Process cycle times for existing heavy duty modification such as Furfurylation, Acetylation and high pressure Fire Retardant treatments are very long. The unique new WTT XModification technologies have reduced traditional cycle times with a factor 5. This makes our modification systems very cost efficient and highly scalable for future large volume industrial applications
Superior performance
XModified™ combines different modification methods which makes overall modification highly efficient. AS a result XModified™ products outperform existing technologies, meeting the highest Durability Class 1 requirements.
Documented and certified quality
XModified™ products are tested and certified according to the relevant European Norms. The result is stable and predictable product quality at the highest performance level.
Simple and safe production
WTT XModification systems and processes are developed from decades long experience from first and second generation wood modification systems. They are uncomplicated and efficient to operate and offer a safe and clean operating environment with small footprints, significantly reducing the need for expensive building spaces.
Unmatched 25/50 years warranty
Correctly XModified™ products offer 50 years performance warranty for above ground applications, as well as 25 years performance warranty for in ground/fresh water applications.

Proven Technology
Built on WTT’s proven Thermo platform and more than 20 years of operational experience.
Versatility
Designed to treat a wide range of wood species—even those requiring demanding process conditions.
Cost-Efficient
Competitive production costs per cubic metre help maximise the value of every batch.
Premium Output
Precise process control ensures consistent treatment and reliable product quality—batch after batch.
Plug-and-Play
Designed for fast installation, easy commissioning.
Certified Recipes
Recipes available for EN, AWPA, NTR, and BS standards for specific wood species
Durable Fan
Specially developed air circulation fans with service intervals of up to 200 cycles
Flexible Installation
Ready for indoor or outdoor setup with minimal foundation requirements
Full Support
Comprehensive training, know-how, and on-site or online support from WTT experts
Sustainable Design
Low energy consumption and highly competitive lifecycle costs



















