millboard DECKING

Millboard is all about showcasing woods natural grain. Many years were spent developing this natural wood-look in a wood-free composite that provides the attractiveness or real timber without the flaws that can come with the real thing.

what is millboard?

What is Millboard.jpg

why choose millboard for decking?

This composite is created by moulding the authentic grain pattern of real wood boards using a polyurethane resin reinforced with mineral fibres and a unique Lastanesurface. Millboard has now been tried and tested over 10 years and will withstand the most challenging environmental conditions without splintering, rotting, warping or fading significantly.

It will keep looking inviting for years to come with very minimal maintenance typically limited to a very simple wash off so if you are looking for an ultra-low maintenance decking Millboard is the perfect choice whether for residential or commercial settings.

millboard decking features

  • Ultra-Low maintenance

  • It's simple and quick to install

  • Highly resistant to fading, scratching, staining and mould

  • Low-slip and splinter free

  • A non-porous Lastane surface

  • An attractive real wood appearance

  • A range of colours and grain patterns

  • A 25-year limited warranty


Millboard comes in two different grain patterns:

Enhanced Grain which showcases a smooth, natural wood grained finish of modern elegance these boards are 176x32 3.6m



Weathered Oak to replicate 100-year-old wharf timbers, sun-bleached driftwood and old railway sleepers, so it has that fine detail and character that usually only comes with real wood. It is perfect for a wide range of landscaping applications these boards are 200x32 3.2m

Millboard has a diverse product range: View the full Millboard Product Range

Millboard is as beautiful as hardwood but innovatively designed to improve upon it in all areas.

Use Millboard to create the perfect finish to your outdoor area without having to be concerned about time-consuming regular maintenance.

Millboard is handmade with care and quality with every board carefully hand coloured to perfectly re-create that real wood appearance.

With Millboard the possibilities are endless, decking, wall claddings, seating, planter boxes. Talk to Austim about your own Millboard vision.




durafix Hidden Fastener

In a word simple, the Durafix Stainless Steel 316 fixings just screw straight in, no pre-drilling or countersinking.

Stop the screw head 5mm below the Lastane surface, and it will leave a small almost indistinguishable hole.

easy installation for residential and commercial applications

Millboard installation guide

 Environmentally friendly

Wood free and carbon verified using the least amount of energy and carbons possible 430g CO2e per square meter.

frequently asked questions

Do Millboards mark?

The Lastane® finish is highly resistant to scratches and food and drink stains.


Can Millboard be used for other applications?

Millboards are extremely versatile and can be used to create not only beautiful decks, but balconies, roof gardens, boardwalks, planters, bridges, pontoons, seats, steps, and much more besides. For inspiration view our product portfolio at


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Can you cut Millboards as you can with wood?

Millboard may be scored with a carbon topped multi-purpose mitre or chop saw. Matching colour coating for exposed ends is available in 500ml tins. As the shaped end of the board disappears when cut, these can be placed in less visual areas against an edging profile or walls.  

What are the recommended fixings for millboard?

Following considerable trials, we approve and supply self-drilling ‘Durafix’ stainless steel screws. There is no need to drill beforehand or countersink Millboards and the inimitable Lastane® material will self-heal leaving no unidentifiable marks for a clean finish.


What joist spacing do you recommend?

Joist spacing of 400mm is recommended for small-scale commercial and regular residential use. On heavy commercial balconies, bridges, jetties, entrances, and stairs, use 300mm spacing. If you need to cut the Millboard down lengthwise lessen the joist centres accordingly. At least 3 joists are required for any chopped boards. All Millboards are reinforced for additional strength. For laying 45° to the joist, we recommend max 300mm centres & 240mm for commercial use. Please see our full installation guide to learn more about applications.


How do I finish the edging detail?

We recommend that our purpose made edging is fitted at steps, supported by fascia boards to complement the aesthetic finish and performance of your deck. Fascia deck boards and edging come in rigid as standard, however, flexible boards and edges are also available and can be curved to follow a maximum convex diameter of 3 metres.


Can you recommend a merchant or an installer?

We have a network of recommended installers who can complete the work for you. They are chosen for their professionalism and high-quality workmanship. We do not charge extra for this or receive any commission; we just want you to get the best from your project. Ask our sales team for a recommendation.


Do Millboards come with a Warranty?

Yes, our 25 Year Residential limited warranty against rotting such as fungal and mildew decay, splitting and twisting leaves your mind at ease. Millboards are handcrafted in the UK. Full details and terms and conditions are above.

Millboard residential warranty

Register your warranty here -  millboard warranty registration


Why are Millboards virtually maintenance free?

Millboards are manufactured with a non-porous material, therefore resisting algae development and stains. There is no need to use any kind of rough cleaners, solvents, wax, chemicals, lubricant or other household cleaners on Millboards and no need to pressure wash as dirt does not get deep-seated. As the surface texture is non-porous, any dirt and grime may be simply washed off with soapy water and brushed with a soft bristle broom as you would for an indoor area.


Are all Millboards anti-slip?

Yes, according to AS4586:2013 slip resistance assessments Millboards are leading the industry with their high-scoring P5 anti-slip ratings even in wet conditions.

See the slip test report for yourself - millboard slip test report


Are Millboards colours consistent?

As with all flooring, it is best to buy all you need in one go, as different batches may have slight variations. Otherwise, we recommend blending different batches.


what’s next?

Contact Austim to discuss in detail about millboard and get a FREE quote.

Why Austim?

Austim has the best composite decking timber supplies Perth wide and makes choosing the right product easy. Got questions about Millboard? Ask Austim!