Composite decking for architects

Millboard composite decking for architects: Our decking combines the natural beauty of real timber with the high performance of our unique wood-free material. Millboard is non-porous, which means high resistance to algae growth and excellent anti-slip properties.

What does Millboard composite decking look like?

Its appearance is the most realistic wood effect decking product in the world! (More importantly perhaps, it looks nothing like plastic). It is an alternative to wood and yet contains no wood or plastic.

What is our composite decking it made from?

Millboard is made from Polyurethane resin (not plastic) with mineral stone flour commonly referred to as Resin, mineral composite (RMC). It also contains glass fibres to give extra exceptional strength. Other ingredients are high quality colour pigmentation and high-tech ultraviolet light inhibitors for durability and lasting beauty.

What sort of spans should I use between Joists?

400mm centres for residential applications, 300mm centres for commercial and public realm applications. Millboard decking will cantilever over the end of a joist by a maximum of 50mm.

Can you screw fix Millboard like you can with wood?

Yes, it will fix down with screws just like wood will, but without the possibility of splitting. We only Warrant the use of our Millboard ‘Durafix’ screws as these are the only screw that give a satisfactory hidden ‘Lost Head’ effect.

Can you use normal wood working tools?

Absolutely, no specialist wood working equipment is needed, you can even saw it by hand. As with all products that create dust when working with them we recommend, dust bags on saws and dust masks to be used in the control of dust. Gloves should also be worn.

Can the Millboard composite decking system be used on a flat roof?

Yes is the easy answer, determine what method of construction has been used for solid wood or concrete slab roofs with a mineral finish. Use our ring supports or joist shoes to position the joists where slope of roof is gentle enough to not be a concern. For a single ply membrane roof use our adjustable self-levelling head pedestal systems to spread the load preventing any point loading, both products will raise the joists above any standing water, prolonging their life while also acting to reduce sound transfer. Both products encourage the free flow of water on the roof membrane.

Will composite decking fade over time?

Millboard has a very high resistance to fading, this is because it contains no wood fibres which typically fade and leave tannins.

Can I butt joint composite board ends tight to the next decking board?

You can do because the expansion and contraction is minimal, the butt joints should be positioned in conjunction with recommendations contained in the installation guide. A maximum of 2 butt joints before a gap of 2-3mm is desired.

How will saltwater effect Millboard composite decking?

Millboard is suited to saltwater environments. Salt water will have no known ill effects on Millboard decking and if need be Millboard can live submerged.

Can you use composite decking for load bearing applications (i.e. structural)?

It is not recommended to use Millboard in structural applications; Millboard decking would need to be fixed to a structural frame, either made of timber or ‘Plas-Pro’ recycled plastic.

Can you paint / stain it?

There’s no need! Millboard is designed as an ultra-low maintenance product and paints and stains will not adhere permanently to the surface of the Millboard in most cases. Clients choose the colour they desire based on the knowledge they won’t have to coat it to keep its colour.

Can you bend Millboard composite decking?

Millboard decking boards won’t bend across their width, but curves can be created by using the flexible edging profiles and fascias.

Are Millboard composite decking products environmentally friendly?

Yes. Because Millboard decking will not splinter, warp or fade in the way wood does, it dramatically reduces the wasteful life cycle of repair and replacement and eliminates the frequent application of environmentally harmful paint, sealers or stains. Millboard decking boards are manufactured with polyurethane resin which can typically last longer than timber, up to 35-40 years (subject to environment). Timber is typically 10-15 years. This avoids unnecessary replacement, which would use up resources on a broader scale. In addition, the manufacturing process of rigid polyurethane resin uses a lot lower energy expenditure (2-6 Mj/Kg) than thermoplastic process (6-29Mj/Kg), thus reducing potential emissions.

Polyurethane has an Ozone Depletion

Rating (ODR) = 0. Global warming

Potential (GWP) = 0.

Unlike wood, Millboard decking is a one-time purchase for most homeowners, with a 25-year Limited residential warranty.

How does the price of composite decking compare to softwood decking?

Initially, it is more expensive than softwood decking, but similar in price to a high quality hardwood. What you must remember is that the subframe material and installation are comparable to traditional decking so the labour cost remains similar. Also due to the reduced maintenance requirement, the life cycle cost of Millboard is considerably less than that of softwood decking. It is a much superior quality material to softwood and it is uniform, whereas softwood decking may be warped, contains knots and is inconsistent in density. It’s the perfect alternative decking product.

What material is used for the sub structure?

The cheapest option (applicable to free draining, relatively dry conditions only) is to use treated softwood. The softwood sub structure will obviously decay over time, and may not last as long as Millboard could do. Alternatively we also supply our non-rotting Plas-Pro recycled plastic sub structure system, which is far superior and useful in damp conditions or areas with low air circulation.

Does composite decking become slippery when wet?

Millboard decking has achieved the highest accreditation for slip resistant composite decking in the world! As it is resistant to hosting algae growth and has a textured ‘Lastane’ surface material it is naturally low-slip.

Is there a hidden fixing system?

Yes, the Durafix screws Millboard supplies are made to sink into the surface of the boards and the surface material covers back over leaving only a small, virtually indistinguishable hole

How easy is composite decking to clean?

Once the decking has been installed and after the initial ‘after installation’ clean down there will be very little maintenance required. As the surface is non porous dirt, food and drink spillages do not become absorbed, unlike timber. The simplest way to clean the deck itself if it is really needed is to use soapy water and a brush. It can be cleaned down with a power washer, on low power, if required but this should never really be needed.

View the complete Millboard Collection here or Dowload the Architectural Guide here.