Tricoya® for enhanced durability and stability

Performance comes naturally

Many of the benefits observed in Accoya® solid acetylated wood, including enhanced dimensional stability and durability, hold true in many of the composite configurations produced using Tricoya®.


Longer lasting, perfect for outdoor use or wet (interior) environments

50 years guarantee50 years guarantee

Peace of mind with a 25 year in-ground and 50 year above ground Medite Tricoya guarantee

icon_stabilityEnhanced stability

Swelling and shrinking dramatically reduced

Resistant to fungal decayResistant to fungal decay

Effective barrier to fungal decay

Sustainably sourcedSustainably sourced

FSC certified. Wood used from sustainable sources

Desired service life of 60 yearsDesired service life of 60 years

Independent testing by BRE shows an expec­ted service life of 60 years for exterior use

Design FreedomDesign freedom

All the design, fixing and machining flexibility of medium density fibreboards

Lower maintenance costsLower maintenance costs

Extended periods between exterior coatings maintenance

Perfect for coatingPerfect for coating

Improved stability and durability enhances service life of the coating. Damaged coating or core will not  affect durability

The functionality and versatility of wood-based composite panels give them universal appeal. When properties such as high strength, light weight, good insulation and ease in use are required, wood-based composite panels become the ideal choice for many applications.

Although wood is widely used as a building material, it has certain natural shortcomings. Notably, wood is inclined to swell and shrink in response to changes in relative humidity. Wood is also susceptible to degradation because of attack by microorganisms, like fungi, and is therefore not naturally durable.

These shortcomings have limited the use of solid wood and wood composites in many markets and applications. Poor durability and dimensional stability will, for example, cause wood panels to crack and delaminate over time. The good news is that composites containing acetylated wood chips, particles, fibres, etc. demonstrate to have superior dimensional stability and durability, even in extreme weather conditions, meaning they can now be used in situations and applications where normal wood panels cannot.

Renowned institutes both inside and outside Europe have extensively tested and evaluated the Tricoya panels and conclude the performance is so outstanding the material safely can be used in very adverse exterior environments. Note that configurations may vary to some extent, as wood feed stocks, resin systems and panel forming conditions have a certain influence on the dimensional stability and durability of the end product.

Proven performance

24 hour swelling

Wet strength: MOE

Wet strength: MOR

Wet strength: IB

0 cycles



After a total of 25 cycles, the sample showed no cracking, swelling or delamination.

1 cycle:


Freeze-Thaw Cycle

2-3h freezing at -20 ºC;
2-3h storage in water at 20 ºC

Wet-Dry Cycle

18h storage in water (> 5 ºC);
6h storage at 60 ºC / 20% RH

25 cycles