Exterior application
Above ground
Limited warranty
50
YEARS
Finsa / INFINITE TRICOYA®
Infinite Tricoya®
The design freedom of fibreboard. Reinvented for the outdoors.
Exceptional durability and dimensional stability, even where weather and moisture are part of the brief.
No added formaldehyde
Water resistanceDesigned for exposure
01 / THE MATERIALBEYOND STANDARD MDF
Wood fibre.
New rules.
Infinite Tricoya® starts with wood fibres and transforms them through a process called acetylation. The fibres become much less sensitive to changes in moisture.
That means less swelling, greater dimensional stability and lasting performance in demanding exterior conditions. It is still a workable fibreboard: cut, shape, drill, sand and finish it with appropriate tools and coating systems.
01Acetylated wood-fibre technology
02Minimal swelling, lower movement
03Versatile machining and shaping
ENGINEERED TO HOLD ITS SHAPE, EVEN WHEN CONDITIONS CHANGE.
01 / MATERIAL STUDYCONCEPT VISUALISATION
Finsa Infinite Tricoya®
Built for decades.
Two environments. Long-term performance.
Ground-contact application
In ground
Limited warranty
25
YEARS
Visuals are conceptual illustrations. Limited warranty durations are subject to the manufacturer's published terms and conditions.
The acetylation principle / simply explained
Start with wood fibres
Wood fibres are the starting material.
Wood chips
Wood is prepared into smaller pieces.
Acetylated fibres
Acetylation helps the fibres respond less to moisture.NAF resin system
The fibres are bonded with a no-added-formaldehyde resin system.02 / EXTERIOR PERFORMANCEDESIGNED FOR EXPOSURE
Made to be challenged.
Rain, changing humidity, hot days and cold nights place constant stress on exterior materials. Infinite Tricoya® is made to keep dimensional movement low and resist biological decay in its approved uses.
Its stability can also help suitable finishes and fitted joints perform better over time when the right installation and coating system is used.
50 YRABOVE-GROUND
Manufacturer warranty terms and exclusions apply.
25 YRIN-GROUND
Manufacturer warranty terms and exclusions apply.
3 + 4USE CLASS / EN 335
For approved exterior exposure and intended applications.
LOWDIMENSIONAL MOVEMENT
Reduced swelling and shrinkage against conventional MDF.
* Warranty periods above are published by Finsa for Tricoya® and are subject to the manufacturer’s full warranty conditions, proper specification, processing and installation. They are not unconditional guarantees. Confirm all requirements for your project.
03 / TRANSPARENCYRESPONSIBLE MATERIAL CHOICE
A stronger material story.
Better design starts with better information. Finsa publishes product-level technical and environmental evidence for Infinite Tricoya®. The references below are deliberately limited to claims supported by Finsa or the listed EPD.
Certification status may depend on board configuration, coating and chain of custody.VIEW VERIFIED EPD ↗
04 / ENGINEERING DATATECHNICAL SPECIFICATION
Precision, by the numbers.
Manufacturer values from the official Finsa Infinite Tricoya® technical datasheet, revision 28 May 2026. Columns show nominal board thickness ranges in millimetres.
04.1 / MECHANICAL & PHYSICAL PROPERTIESTHICKNESS RANGE / MM →
| PROPERTY | TEST METHOD | UNIT | 3–4 | >4–6 | >6–9 | >9–12 | >12–19 | >19–25 | >25–30 | >30–40 |
|---|---|---|---|---|---|---|---|---|---|---|
| Density † | EN 323:1993 | kg/m³ | 770–750 | 740 | 740 | 730–725 | 725–680 | 675–660 | 665 | 660 |
| Internal bond | EN 319:1993 | N/mm² | 0.90 | 0.90 | 0.80 | 0.80 | 0.80 | 0.75 | 0.70 | 0.70 |
| Thickness swelling / 24 h | EN 317:1993 | % | 3.5 | 3.0 | 2.5 | 2.0 | 1.5 | 1.3 | 1.1 | 1.1 |
| Bending strength | EN 310:1993 | N/mm² | 32 | 32 | 30 | 27 | 20 | 18 | 18 | 18 |
| Modulus of elasticity | EN 310:1993 | N/mm² | 3600 | 3600 | 3500 | 3200 | 2800 | 2400 | 2300 | 2300 |
| Internal bond after boil test (V100) | EN 1087-1:1995 / EN 319:1993 | N/mm² | 0.70 | 0.70 | 0.65 | 0.65 | 0.65 | 0.60 | 0.55 | 0.50 |
| Surface soundness | EN 311:2002 | N/mm² | 1.3 | 1.3 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Dimensional movement / length + width | EN 318:2002 | % | 0.12 | 0.12 | 0.10 | 0.10 | 0.10 | 0.10 | 1.1 | 1.1 |
| Dimensional movement / thickness | EN 318:2002 | % | 1.5 | 1.5 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Surface absorption / two faces | EN 382-1:1993 | mm | >150 | >150 | >150 | >150 | >150 | >150 | >150 | >150 |
| Moisture content | EN 322:1993 | % | 3 ± 2 | 3 ± 2 | 3 ± 2 | 3 ± 2 | 3 ± 2 | 3 ± 2 | 3 ± 2 | 3 ± 2 |
| Reaction to fire ‡ | EN 13501-1:2018 | Euroclass | E | E | E | E | D-s2,d0* | D-s2,d0 | D-s2,d0 | D-s2,d0 |
† Density values are indicative only, per Finsa.
‡ The fire classification D-s2,d0 is applicable only for thickness ≥18 mm. Thickness below 18 mm: Euroclass E.
The source datasheet should govern final technical decisions. Open the official sheet ↗
Why Tricoya?
01 ↗
Exterior-ready
Made for the specified outdoor uses stated in Finsa documentation.
02 ↗
Better stability
Reduced swelling and dimensional movement through acetylation.
03 ↗
Workshop-friendly
Can be cut, drilled, shaped and sanded with suitable machinery.
04 ↗
Finish versatility
Compatible with appropriate paint and coating systems when correctly prepared.
04.3 / OFFICIAL REFERENCE LIBRARY
All the details.
From the source.
Open Finsa’s latest technical data and the complete manufacturer brochure. Use these documents for thickness-specific values, guidance and project specification.
Finsa official documents • Technical sheet revised 28 May 2026
05 / IN THE FIELDARCHITECTURAL APPLICATIONS
For places that live outside.
From façades to joinery and demanding humid interiors. An editorial gallery illustrating categories of applications described by Finsa. Images are concept visuals, not verified installed Tricoya projects.
