Skip to the page's content

Search

MEDITE TRICOYA EXTREME

Have questions? Speak to our technical team

At a glance

High-performance exterior panel

Developed for long-term use in exterior and high-moisture environments where durability and stability are critical to overall building performance.

Guaranteed outdoors for 50 years

MEDITE TRICOYA EXTREME (MTX) is guaranteed for 50 years above ground, 25 years in ground contact and freshwater immersion. MTX is resistant to salt and can be used in environments close to saltwater.

Acetylated wood fibre technology

Manufactured using advanced acetylation that permanently modifies the wood fibres, embedding performance throughout the panel rather than relying on surface treatments.

Outstanding durability

The panel exhibits outstanding durability and dimensional stability which allows it to be used in applications once limited to products such as concrete, plastics or metals.

Exceptional dimensional stability

Significantly reduced swelling and shrinkage compared to conventional wood-based panels, helping maintain shape, alignment and finish integrity over time.

Outstanding durability

Highly resistant to rot and fungal decay, guaranteed service life of 50 years above ground and 25 years in contact with water or soil.

Precision machining performance

Combines extreme durability with the clean routing, sharp edge detailing and smooth surface finish associated with high-quality MDF.

Specification and sizes

MEDITE TRICOYA EXTREME is available in a range of sizes and thicknesses. Other sizes available on request.

Finish Thickness
1220 x 2440mm 4, 6, 9, 12, 15, 18mm
1220 x 3050mm 12, 15, 18mm

Applications

Modern single-storey house with dark roof and glass doors opens onto paved terrace with pink chairs beside blue swimming pool.

Outdoor Living

MEDITE TRICOYA EXTREME enables the creation of durable, high-quality exterior features designed to withstand long-term exposure to the elements. It is well suited to outdoor environments where performance and design flexibility are equally important.

Exterior Furniture and Structures

Suitable for outdoor furniture, kitchen units, pergolas and architectural features exposed to external conditions.

Outstanding Durability Outdoors

Resists moisture, decay and environmental exposure, supporting long service life in demanding environments.

Design Flexibility for Exterior Projects

Can be machined and finished to create detailed exterior designs without compromising long-term performance.

Modern house entrance with grey double doors under red clay tile canopy, cream render walls, brick details, and landscaped front garden.

Doors

MEDITE TRICOYA EXTREME is widely used in the manufacture of high-performance external doors where dimensional stability and durability are critical to long-term performance.

High Stability Door Components

Exceptional dimensional stability helps doors maintain their shape and performance in changing weather conditions.

Long-Term Exterior Performance

Resists swelling, shrinking and degradation, supporting consistent performance over time.

Premium Machining and Finishing

Provides a high-quality surface suitable for painted and coated finishes in external door applications.

Modern commercial building with large grey-framed glass windows and doors at street level, white and brick upper floors.

Signage and Shopfronts

MEDITE TRICOYA EXTREME is ideal for signage and shopfront applications where appearance, durability and long-term performance are essential in exposed environments.

Durable Exterior Signage

Suitable for signage, lettering and display elements exposed to outdoor conditions.

Stable Substrate for Finishes

Provides an excellent base for painted and coated finishes that maintain their appearance over time.

High-Performance Shopfront Applications

Used in architectural shopfronts and branded environments where both aesthetics and durability are critical.

Case Studies

An Exceptional Service Life Guarantee

MEDITE TRICOYA EXTREME is backed by a 50-year guarantee for use in ground contact and a 25-year guarantee above ground, reflecting its exceptional durability in demanding environments.

This guarantee is based on extensive independent testing and real-world performance data. It provides confidence that the panel will maintain its integrity over time, even when exposed to moisture, weathering and biological risk.

Unlike traditional wood-based materials, the durability of MEDITE TRICOYA EXTREME is engineered into the material itself. This means its performance does not rely on coatings or treatments to remain effective.

What This Means in Practice

For designers, specifiers and fabricators, the guarantee supports confident material selection in applications where long-term performance is critical.

Reduced maintenance requirements
Improved dimensional stability helps extend coating lifecycles and reduce the need for ongoing maintenance.

Long-term durability in challenging environments
Suitable for applications exposed to moisture, weather and ground contact.

Confidence in specification
Provides reassurance in projects where material performance is critical to lifecycle costs and design integrity.

The Acetylation Process

MEDITE TRICOYA EXTREME is manufactured using acetylated wood fibres, a process that fundamentally changes how the material behaves in challenging environments.

At a molecular level, the natural structure of wood contains hydroxyl groups that attract and absorb water. During acetylation, these groups are replaced with acetyl groups using acetic anhydride. This transformation significantly reduces the wood’s ability to absorb moisture.

The process is permanent and occurs throughout the entire fibre, not just at the surface.

Scientific diagram showing green and grey circular elements, chemical structures, and blue storage container with connecting arrows and labels.

Engineered Performance, Built In

Unlike treatments or coatings that can degrade over time, acetylation is embedded within the wood fibre itself. This means the performance of MEDITE TRICOYA EXTREME is consistent throughout the panel, even when cut, machined or exposed to the elements.

The result is a high-performance wood panel that combines long-term durability with the precision, machinability and design flexibility expected from engineered wood.

FAQs

Is MTX waterproof?

No. MTX is moisture stable. As MTX is a wood-based panel it can absorb low levels of water. Moisture will not negatively impact board properties

Can MTX be laminated?

Yes. Best practice must be followed when laminating to ensure the finished panel is balanced. As with all timber and wood-based panels lamination can affect how the material will react in an environment.

Does MTX need any special tooling?

Tungsten-carbide-tipped tooling is recommended for machining MTX.

Is MTX non-added formaldehyde panel?

Yes. We do not add any formaldehyde during the manufacturing of MTX.

What is the warranty on MTX?

MTX is guaranteed for 25 year in-ground and 50 year above ground. Please contact us for further information on this guarantee.

Have a question?

Get in touch for support from our technical team

Blurred figure walking past beige marble wall with vertical columns and grey pavement below.

Related Products

Downloads

Datasheet

MEDITE TRICOYA EXTREME DATA SHEET

Download
Technical

MEDITE TRICOYA EXTREME Product Guide

Download
Literature

Explore the possibilities with MTX

Download
Literature

MEDITE TRICOYA EXTREME BROCHURE

Download
Literature

MEDITE TRICOYA EXTREME Cladding Brochure

Download
Literature

MEDITE TRICOYA EXTREME Usage Guidelines

Download
DOPs, CE & UKCA Marks

MEDITE TRICOYA EXTREME CE DOP

Download
DOPs, CE & UKCA Marks

MEDITE TRICOYA EXTREME CE Mark

Download
DOPs, CE & UKCA Marks

MEDITE TRICOYA EXTREME UKCA DOP

Download
DOPs, CE & UKCA Marks

MEDITE TRICOYA EXTREME UKCA Mark

Download
Compliance

MEDITE TRICOYA EXTREME EPD

Download
Compliance

MEDITE TRICOYA EXTREME Warranty

Download
Compliance

MEDITE TRICOYA EXTREME BRE Report

Download
Compliance

MEDITE TRICOYA EXTREME Safety Data Sheet

Download
Technical

MEDITE TRICOYA EXTEME Storage, Handling and User Instructions

Download
Technical

PPG Coating System for MTX and MEDITE EXTERIOR

Download
Technical

Teknos Coating System for MTX and MEDITE EXTERIOR

Download
Technical

Sikkens Coating System for MTX and MEDITE EXTERIOR

Download
Technical

Dulux Coating System for MTX and MEDITE EXTERIOR

Download
Technical

REMMERS COATING SPECIFICATION FOR MEDITE TRICOYA EXTREME AND MEDITE EXTERIOR

Download
Technical

Sherwin Williams Coating System for MTX and MEDITE EXTERIOR

Download
Technical

Anker Stuy Primer Coating System for MTX and MEDITE EXTERIOR

Download
Technical

Anker Stuy Top Coat Coating System for MTX and MEDITE EXTERIOR

Download
Compliance

MEDITE FSC CERTIFICATE

Download
Compliance

MEDITE SMARTPLY DAC FSC Product Schedule

Download