Frequently Asked Questions


Where can I use Millboard?

Millboard is extremely versatile and can be used in practically every outdoor space. Create decks, balconies, roof gardens, boardwalks, bridges, pontoons, seating, steps, planters and more.


Do I need to seal Millboard?

No, all Millboards are surface sealed in the factory to ensure they arrive in premium condition. In the first few weeks of use, rainwater will sit on the surface in globules, but don’t worry – this is normal and will stop once the temporary surface seal breaks down.


Does Millboard mark?

The Lastane® finish is highly resistant to scratches and food and drink stains, and everyday wear and tear. Sharp objects such as unprotected table or chair legs, spiked shoes or metal planter bases can leave marks if dragged across the surface, so take care  when moving these items around.


How do I clean Millboard?

Because Millboard is made of non-porous composite, it resists mossy build-up and stains, so needs very little maintenance. To remove spills and marks, simply use a mild detergent and a cloth. Just steer clear of solvents, chemicals and abrasive cleaners that could damage your Millboard – and there’s normally no need for pressure washing.


What if it snows or is icy?

A small amount of granulated white salt can be used to keep your millboard ice-free. Please don’t use rock salt, as this contains clay and grit and can be abrasive. When winter’s over, clean the surface with soapy water and a soft broom.


Does Millboard come with a Warranty?

Yes, our 25 Year Residential limited warranty and 5 year commercial warranty gives you peace of mind against fungal and mildew decay, splitting and twisting. For more information go to


Is Millboard anti-slip?

Yes, in BS79.76 slip resistance tests, all styles of Millboard achieve one of the highest anti-slip ratings, even in wet conditions.


Are Millboard colours consistent?

As with all flooring, we advise buying all the Millboard you need at the same time to help ensure that the colour is as consistent as possible. If you don’t order all your Millboard at once, you can blend different batches to create only subtle variation throughout your space.


Can Millboard be cut just like wood?

Millboard can be cut with standard saw blades, although we recommend a carbon-tipped, multi-purposed chop saw. As the formed end of the board is lost when cut, these can be placed in less visible areas against a wall or edging profile. Matching Touch-up Coating for exposed ends is available to buy separately.


What fixings should be used to fix Millboard?

Following extensive trials, we recommend and supply Durafix self-drilling stainless steel screws, designed specifically for Millboard. There’s no need to pre-drill or countersink Millboard and the unique Lastane® material self-heals, leaving a virtually indistinguishable mark on the surface.


Can you recommend an installer?

We have a nationwide network of recommended installers who can complete the work for you. Each is chosen for their professionalism and high quality, but you should always follow normal precautions before entering into a contract with a third party, especially if a deposit payment is required. Please visit our Where to buy to browse for an installer near you.


Something else?

For any other technical, installation or care questions call our technical team on 024 7643 9943, or email us at



CAUTION – In high temperatures or prolonged bright sunlight Millboard can become hot. Please exercise caution before walking barefoot on to Millboard in circumstances where the Millboard is in high temperatures and exposed to sunlight. In these circumstances, it may be necessary to use footwear. You should not use Millboard in areas that are affected by heat reflective glass.



All types of Millboard have been tested by BBA, Certificate 17/5409 for use as Decking Boards. Millboard has been tested to BS EN ISO 13501-1:2007+A1:2009 and has a Bfl-S1 reaction to fire classification (fire test for flooring). Millboard is not recommended for use as cladding on buildings 18m (6 storeys) or above, and for other cladding use, it should be subject to Building Regulations checks.
View our Fire Test Results Certificate here.