The next generation of
panel products with a
60 year service life for
exterior and interior
Presentation: Peter Clifton, Product Manager, wet
Mediteapplications
Tricoya
 What is wood modification
via acetylation method?
 What is Medite Tricoya
Extreme
 What tests have been
done on Medite Tricoya
Extreme
 What are Medite Tricoya
Extreme’s leading uses?
What is wood modification via acetylation method?
Description of Acetylation
Acetylated
wood
element

Acetylation effectively
changes the free hydroxyls
within the wood into stable
and moisture resistant
Acetyl groups. This is done
by reacting the wood with
acetic anhydride, which
derived from Acetic Acid
(vinegar)

Acetylation dramatically
improves the fibreboards
durability, stability, coatings
performance and service life
What is wood modification via acetylation method?
The MDF Process
Acetylated wood
element
What is Medite Tricoya Extreme?
In this section we will cover the
following topics:

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
The performance benefits
Warranty
Environmental credentials
Technical properties
What is Medite Tricoya Extreme?
Performance benefits
What is Medite Tricoya Extreme?
Performance benefits
 Up to 50 year warranty on
panel stability and decay
performance
 Resistant to fungal decay
 Resistant to termite attack
 BBA Assessment
(M2149109)
What is Medite Tricoya Extreme?
Performance benefits
 Non-toxic acetylation
process
 Formaldehyde free resin
system
 Meets CARB2 emission
limits
 Non hazardous material –
product could be recycled
 FSC® certified
What is Medite Tricoya Extreme?
Health & Safety of Acetylated wood fibreboard
 Non hazardous material
 Normal vac extraction for
wood dust can be used
 Compliant with standard
factory working conditions
 Material safety data sheet
available at
www.meditetricoya.com
What tests have been done on Medite Tricoya Extreme?
Stability test
Medite®Tricoya®
Extreme
Medite®Tricoya®
Extreme
 Exceeds wood panels
 Comparable to non-wood
What tests have been done on Medite Tricoya Extreme?
Accelerated Exterior Weathering Test
Extreme Durable MDF excels in outdoor
environments
Freeze/thaw cycles:
3 hours water soak at 20ºC
3 hours freezing at -20ºC
Wet/Dry cycles:
18 hours storage in water (>5ºC)
6 hours storage at 60ºC/20%RH
X 25
Image: 12mm panel before
durability test cycles
What tests have been done on Medite Tricoya Extreme?
Accelerated Exterior Weathering Test
 No cracks, or delamination in
Freeze / Thaw cycles.
 Significantly improved
dimensional stability
performance in all dimensions
through cycles
Image: 12mm panel after durability test cycles
What tests have been done on Medite Tricoya Extreme?
Durability Summary: SP Sweden – Durability assessment EN311
 Testing undertaken by SP Sweden further supports
the BRE’s findings of Medite Tricoya Extreme
having class 1 durability, equivalent to slow grown
Teak, with excellent stability and being capable of
a 60 year service life for exterior use.
Mass loss (%)
Durability class
estimate
Soil type
Scots
pine
Extreme
Durable MDF
Compost
31.40
0.11
1
Simlangsdal
en
28.44
0.32
1
Forest soil
34.50
0.25
1
What tests have been done on Medite Tricoya Extreme?
Extreme Durable MDF Technical Specification Summary Sheet
Medite Tricoya Technical Specification Sheet
Thickness (mm)
Test
Property
Range
Units
6
9
12
15
18
Method
Density
+/-30
kg/m3
720
720
720
700
700
Internal Bond
Min
EN 319
N/mm²
0.80
0.80
0.80
0.80
0.80
Modulus of Rupture Min
EN 310
N/mm²
30.0
30.0
25.0
20.0
20.0
Modulus of Elasticity Min
EN 310
N/mm²
3,000
3,000
2,500
2,500
2,500
Screw Holding Face Min
EN 320
N
900
900
Screw Holding Edge Min
EN 320
N
700
700
Free Formaldhyde
Max
EN 120
mg/100g < 1.0
< 1.0
< 1.0
< 1.0
< 1.0
Thickness Tolerance
EN 324-1 mm
+/- 0.15 +/- 0.15 +/- 0.15 +/- 0.15 +/- 0.15
Thickness Swell
Max
EN 317
%
2.5
2.0
2.0
1.5
1.5
(24hrs)
Thermal Resistance
R Value
m2 K/W
0.056
0.085
0.114
0.15
0.18
Dimensional
Movement
Length / Width
EN 318
%
+/- 0.1 +/- 0.1 +/- 0.1 +/- 0.1 +/- 0.1
Thickness
EN 318
%
+/- 1.0 +/- 1.0 +/- 1.0 +/- 1.0 +/- 1.0
After Boil Test
Internal Bond
Min
EN1087-1
EN 319
N/mm²
0.65
0.65
0.65
0.65
0.65
What tests have been done on Medite Tricoya Extreme?
Processing
Medite Tricoya Extreme can be cut, coated, coloured, sanded, glued, machined
and fastened the same as any other high performing wood fibreboard – allowing
users all the freedom normally associated with MDF but in extreme applications.
Fabricating
The panel may be cut, machined and used in
exactly the same way as the rest of the Medite
(MDF) range.
Coating
Conventional water-based paint coatings may be
used to decorate the panel.
Laminating
Melamine papers, high pressure laminates and
foils can be adhered to the product.
Sanding
The acetylated wood fibreboard panel is delivered
ex-mill with a 150 grit sanded finish and can be
sanded with fine sandpaper to achieve a smooth
finish.
Gluing
Since acetylated MDF is drier than other wood
panel products and absorbs water in a different
manner, curing times of adhesives may be
different. Recommended adhesives are PU,
Epoxy, PRF and EPI.
Fixing
Due to some residual acetic acid in the panel,
stainless steel fasteners & fixings with A2 or A4
(EN1008-1) quality or AISI type 304 or 316
should be used
Fire rating
Panels achieve a fire class rating of euro class D
within the Euro classification as with most woodbased panel products
Coating performance warranties
 A number of coating manufacturers have successfully trialled the
acetylated wood fibreboard
 These coating companies now offer extended coating warranties
on exterior joinery and cladding manufactured from Medite Tricoya
Extreme and with a fully factory finished approved system.
 Warranties of up to 10-15 years respectively on opaque finishes
 Other leading coating companies are working on their own testing
and warranties
Service life cost
BMTRADA evaluated the service
life cost of cladding:
 Initial cost of coated MTE in line
with coated exterior grade
plywood
 MTE has much lower cost during
total service life than exterior
graded plywood due to low long
maintenance intervals
 Financial advantage from a very
early stage on
 No need for replacement or repair when maintenance is poor
Applications - Fascia's and Soffits
2 projects – Netherlands
• Original spec, gaboon
marine plywood and
compact laminate.
• Switched to Extreme
Durable MDF
• Better machining
• Better paint finish
• Extended paint
performance
• Core guarantee
• FSC certified
• Light in weight than
compact
• More stable
College Façade Dual use solution
 Façade for college
extension - Netherlands
 Climbing wall
 Original specification
 Façade – compact
laminate
 Wall – birch plywood
 One product two uses
 Environmental, saved
time, reduced waste,
Prisma Gemiva School – Canopy
and window surrounds
 Lightweight solution to a
heavyweight challenge
 Easy to cut and install
 Easy coting to replicate
“concrete” look
 Environmentally
sustainable
 Durable
Student Accommodation
Stavanger, Norway
 Project for students to find
solution for growing demand
 Converted sea containers
 Combination product usage
 Medite Tricoya Extreme
 Accoya timber frame
 Vacuum sealed high
performance insulation
 Plan to roll out to greater
numbers
Façade refurbishment
Nijmegen, Netherlands
 Replacing asbestos façade
panels
 Existing substructure used
 Speedy replacement
 lightweight
 Panels easily cut to size
 Easily trimmed to size on
site to fit
 Guaranteed paint system
 FSC Certification
Facade Cladding
Switzerland
Art Structure – Netherlands



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Metal structure with
Medite Tricoya
Extreme cut and
machined panels
Original specification –
marine grade plywood
Guaranteed paint
system
Installation for 5 years
Demonstrates
versatility
Garden Buildings, Planters & Beach Huts
Shopfronts and Signage
Exterior Doors
And many more!!
And many more!!
James Latham depots
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Enquiries and literature
P: 0116 257 3415
E: marketing@lathams.co.uk
W: www.lathamtimber.co.uk