Millboard Brushed Basalt

Millboard Brushed Basalt
Millboard Brushed Basalt

Project Photos



A new release from Millboard, Brushed Basalt is the most authentic painted-wood-look decking board available. It is perfect for creating seamless transitions between indoor and outdoor spaces with its tasteful styling.

Millboard is made from mineral fibres reinforced with fibreglass, with a surface layer of incredibly resilient polyurethane Lastane®. The highly specialized exterior coating is accredited with the highest anti-slip rating in the UK, even when wet and will not rot, warp, fade or splinter. Even around a pool where it is constantly battered by the hot sun and chlorinated water, the boards will remain unchanged.

Millboard decking requires no oiling, sanding, staining, painting or coating over the life of the product. Millboard has low expansion and shrinkage, so it can be installed with minimal gaps between planks. It has a similar hardness to a fine hardwood deck.

Matching edging, fascia and bullnose board are available for this product. You can use Millboard's handy Decking Calculator to work out the exact materials required for your project. Alternatively, Send us your plans and we'll work it all out for you!

  • Price POA
  • Availability Stocked product
  • Unit Size 3.6m lengths
  • Code MDE176B
  • Lead Time Please enquire



Collection NameMillboard Enhanced Grain Product NameBrushed Basalt Product CodeMDE176B Product TypeComposite Decking


SurfaceLastane® CoreResin Mineral Composite (RMC)


Width176mm Thickness32mm Length3.6m


LookClean Oak StatusPre-finished TextureLight grain texture (moulded from real Oak)


Lastane surfaceHighly slip-resistant, wear resistant, exceptional UV & weathering stability, algae resistant, stain resistant, does not warp, rot or splinter Resin Mineral Composite coreLightweight and strong, very low expansion and contraction rate, does not warp, rot or harbour insects, environmentally friendly Weight11.4Kgs per board Density650kg/m3


Suitable UsesResidential, Commercial, Public Spaces Suitable ApplicationsDecking, balconies, roof gardens, public spaces, boardwalks, bridges, pontoons, building facades, seating, steps, planters and more Coverage1.54 boards per m2 Fixing MethodDurafix hidden screw system Fixings per boardResidential: 18 Screws per board / Commercial: 24 Screws per board


Care RequiredMinimal CleaningHose down and clean with stiff bristle broom as required MaintenaceNo oiling or staining required over the lifetime of the deck


Residential25 Years Commercial5 Years

Technical Specs

NZ Standards

Reaction to Fire
ISO 9239-1 - Flooring
Group 1-S - Critical Flux 8.6kW/m2 (Compliant)
Reaction to Fire
ISO 9705 - Walls & Ceilings
Group 1-S
Slip Resistance AS/NZS 4586
Dry Floor Friction Test (FFT)
0.58 COF - Classification F (Moderate to very low)
Slip Resistance AS/NZS 4586
Wet Pendulum Test (PTV)
51 SRV - Classification W (Low)
Acoustic Testing
AS/NZS ISO 717.1:2004
AS 1191.2002
AS ISO 354 - 2006
51 Rw
Taber Abrasion
ISO 7784-2

European & Other Ratings

Reaction To Fire
EN 13501-1 : 2007 + A1 : 2009
CFL - s1
Formaldehyde Emission
Determination of Swelling in Thickness
BS EN 317 : 1993
0.1% (Gt)


Buyer Awareness

With Millboards wide range of colours, you can choose what is best for you. As with all products, the darker colours will feel hotter underfoot in sunny exposed locations. If this is an issue, opt for lighter colours for such locations.

To recreate the aesthetic of natural colour variation, Millboard intentionally adds secondary toning colours. There may be variance within the same board or from board to board in colour tone. This means that samples cut from boards may vary from the general colour of the boarding.

Whilst every care is taken to ensure consistency some colour variation from batch to batch may occur. To avoid this, we recommend that you order all you need in one delivery. If you do have different batches it is best to mix the batches to blend the colours.

As with all things constantly exposed to ultra violet light and all weathers, colours will tone slightly in time, this is normal for decking. On delivery if you find the colour unacceptable or believe them to be defective in any way, do not install the boards.

Millboard Brushed Basalt
PLEASE NOTE: When calculating square meterage required you will need to allow extra for wastage. For Millboard we recommend allowing at least 8%. A professional site measure is recommended before purchasing this product.