Tricoya Extreme Exterior MDF
Tricoya Extreme Exterior MDF
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Tricoya Extreme Exterior MDF
Description
Description
Tricoya® Acetylated MDF is the only MDF genuinely rated for permanent exterior use, delivering Class 1 durability and exceptional dimensional stability for outdoor and wet environment applications. Resistant to rot, fungal decay, and termite attack, Tricoya® virtually eliminates swelling, warping, and biological breakdown while maintaining the workability of standard MDF.
Also known as acetylated MDF or exterior-grade MDF, Tricoya® is manufactured from acetylated wood fibres using the same proven technology as Accoya solid timber. The acetylation process permanently modifies wood fibres at the molecular level, replacing moisture-absorbing hydroxyl groups with stable acetyl groups to prevent water absorption at the cellular level. With Accoya proving this technology in exterior applications since 2007, Tricoya® delivers that same performance in a versatile panel form.
Backed by a 50-year above-ground warranty and 25-year in-ground warranty, Tricoya® is ideal for facade cladding, outdoor kitchens, external doors, wet interior areas including bathrooms and pool surrounds, signage, and any application where traditional MDF would fail.
Features
- Class 1 durability - resistant to rot, fungal decay, and termites
- Dimensionally stable - dramatically reduced swelling and shrinking
- 50-year warranty above ground - 25 years in-ground contact
- Works like standard MDF - same tools, machining, and finishing methods
- Ideal for coating - suits painting, laminating, and veneering
- Low maintenance - extended periods between recoating
- FSC® certified - sustainably sourced from certified forests
- No added formaldehyde - NAF and E0 compliant
Specifications
Specifications
Material: Acetylated Medium Density Fibreboard (Tricoya MDF)
Durability: Class 1 (EN 350-2) - resistant to rot, fungal decay, and termites
Dimensional stability: Less than 2% thickness swell after 24-hour water immersion
Density: 720 kg/m³ (6-12mm), 700 kg/m³ (15-18mm)
Finish: 120-grit sanded, ready for priming, painting, laminating, or veneering
Warranty: 50 years above ground, 25 years in-ground contact
Recommended applications: Facade cladding, outdoor kitchens, external doors, window components, wet interior areas (bathrooms, pool surrounds, laundries), signage, fascia and soffits, outdoor furniture, sound barriers.
Workability: Cuts, routes, machines, and fastens with standard woodworking tools. No specialist equipment required.
Fastener requirements: Stainless steel 304 minimum. Use 316 stainless steel in coastal or marine environments. Do not use galvanised, carbon steel, or zinc-coated fasteners.
Adhesive requirements: D4 class adhesives for exterior use including polyurethane (PU), epoxy, and EPI. PVA is not suitable for external applications.
Finishing: Seal all edges and machined surfaces with end grain sealer. Water-based paint systems can be used. Avoid calcium carbonate (chalk-filled) paints.
Fire rating: Class C flame spread (ASTM E84)
Storage: Store flat on level, dry bearers at maximum 800mm centres. Keep elevated 100mm above concrete floors or 300mm above ground. Store undercover and allow panels to acclimatise before installation.
Sheet Weight (Approx):
| Sheet Size | 6mm | 9mm | 12mm | 15mm | 18mm |
|---|---|---|---|---|---|
| 2440 × 1220 | 13.5 kg | 20 kg | 27 kg | 34 kg | 41 kg |
| 3050 × 1220 | - | - | - | - | 51 kg |
Important information:
- Stainless steel fasteners are mandatory. Contact with carbon steel, galvanised, or zinc-coated metals will cause corrosion and staining. Use 304 stainless minimum, 316 for coastal areas.
- Surface coating is optional for durability. Uncoated panels will weather and grey over time. Scratches or chips to painted surfaces will not void the panel warranty.
- Install cladding with ventilated cavity. Allow airflow behind exterior cladding applications to ensure optimal performance.
Delivery
Delivery
To give you the best rate, we offer various delivery options based on your destination, product type and order size. View our rates below or proceed to checkout to calculate your delivery cost.
Free Pickup - Somerton VIC
Free pickup available between 7.00am - 3.00pm Monday to Friday, excluding public holidays.
Trade Local Delivery - Forklift Required
Flat-rate delivery for local trade customers. All trade deliveries require a forklift for safe unloading. Estimated 1 business day (excluding factory lead time).
| Within 50 km of Somerton VIC | $50 flat rate |
| 50-100 km from Somerton VIC | $75 flat rate |
Panel Products
Panel product delivery rates scale with weight and distance to give you the best possible price across Australia. Estimated 2-3 business days (excluding factory lead time). Please review our Panel Product Delivery Safety Guidelines before ordering.
| Total Order Weight (kg) | VIC | NSW | ACT | SA | QLD | NT | WA | TAS |
|---|---|---|---|---|---|---|---|---|
| Up to 49 kg | $70 | $110 | $110 | $120 | $130 | $150 | $150 | $150 |
| 50 - 149 kg | $120 | $150 | $165 | $180 | $190 | $230 | $230 | $230 |
| 150 - 249 kg | $140 | $250 | $250 | $280 | $300 | $370 | $370 | $370 |
| 250+ kg | $150 | $470 | $470 | $495 | $510 | $600 | $600 | $600 |
Lightweight Items
Flat-rate shipping Australia-wide. Estimated 2-8 business days (excluding factory lead time).
| Edge Banding, Timber Oils & Pre-Glued Veneer Leaves | $40 flat rate Australia-wide |
| Paper Back Veneers, 1mm Laminates & Liners (excl. Magnetic Laminate & Veneer on Laminate) | $70 flat rate Australia-wide |
Samples
Affordable sample shipping with free standard post in Victoria.
| Local Delivery VIC | FREE Standard Post (2-8 business days) |
| $15 Express Post (1-4 business days) | |
| Rest of Australia | $15 Standard Post (2-8 business days) |
Environmental Information
Environmental Information
Additional Information
Additional Information
Tricoya Panel Applications
Doors
Mouldings & Trims
Signage
Facades & Soffits
Outdoor Kitchens
Dimensionally Stable
Longer lasting, perfect for outdoor use or wet (interior) environments.
50 Year Warranty
50 year Tricoya® warranty above ground and 25 years in ground.
Fungal Resistant
Effective barrier to fungal decay.
Design Freedom
All the design, fixing and machining flexibility of medium density fibreboard.
Lower Maintenance Costs
Extended periods between exterior coatings maintenance.
Ideal For Coating
Improved stability and durability enhances the service life of the coating.
Sustainably Sourced
Sustainably sourced FSC® certified
No Added Formaldehyde
Tricoya® complies with CARB 93120 for Phase 2 and NAF requirements.
What is Accoya Wood?
Tricoya® MDF is manufactured using the same acetylation technology proven on Accoya solid timber since 2007. The process permanently modifies wood fibres at the molecular level, replacing moisture-absorbing hydroxyl groups with stable acetyl groups. The result is Class 1 durability, exceptional stability, and a 50+ year service life.
Acetylation uses acetic anhydride, derived from acetic acid (the key component of vinegar), making it non-toxic and environmentally safe. The timber is FSC® certified, 100% recyclable, and locks carbon away for decades.
Tricoya FAQ's
What is the difference between Tricoya and MR MDF?
What is the difference between Tricoya and MR MDF?
MR MDF (Moisture Resistant) is designed for humid interior environments like kitchens and bathrooms, but will still swell and fail if exposed to water or used outdoors. Tricoya is the only MDF rated for permanent exterior use. It can be fully exposed to weather, rain, and even ground contact. Tricoya carries a 50-year warranty above ground. MR MDF has no exterior warranty.
How long will Tricoya last?
How long will Tricoya last?
Tricoya is backed by a 50-year warranty above ground and 25-year warranty in-ground contact. Independent testing by BRE (Building Research Establishment) indicates a 60+ year expected service life in exterior applications.
Can Tricoya be used outdoors without coating?
Can Tricoya be used outdoors without coating?
Yes. Tricoya's durability comes from the acetylation process, not from coatings. Uncoated panels will weather and grey over time (similar to untreated timber), but the panel itself will not rot, decay, or lose structural integrity. Coating is recommended for aesthetics and UV protection, but is not required for durability. All cut edges and machined surfaces should still be sealed.
Can Tricoya be used in bathrooms and wet areas?
Can Tricoya be used in bathrooms and wet areas?
Yes. Tricoya is ideal for wet interior areas including bathrooms, laundries, pool surrounds, and changing rooms. Its dimensional stability means it won't swell or warp in high-humidity environments.
Is Tricoya suitable for ground contact?
Is Tricoya suitable for ground contact?
Yes. Tricoya is warranted for 25 years in ground contact and freshwater immersion. It has proven termite resistance in Australian field trials, outperforming spotted gum, merbau, and western red cedar against Coptotermes in Northern Territory testing.
Can I use standard woodworking tools on Tricoya?
Can I use standard woodworking tools on Tricoya?
Yes. Tricoya cuts, routes, machines, and fastens exactly like standard MDF. No specialist equipment is required. Carbide-tipped tools are recommended for general use; diamond-tipped for high-volume production.
What adhesives are compatible with Tricoya?
What adhesives are compatible with Tricoya?
D4 class exterior adhesives including polyurethane (PU), epoxy, and EPI are suitable for Tricoya. PVA is not recommended for external applications.
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