Composite Siding & Decking | Premium Wood-Free Decking

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Millboard composite decking

Outperform & outlast

Millboard decking combines the natural beauty of timber with the durability of our advanced resin mineral board. Designed and made in the UK, our boards are hand-molded from real oak masters to capture every detail of the grain.

Containing no wood, Millboard decking won’t rot, warp or splinter. It’s exceptionally slip-resistant, withstands everyday wear, and retains its rich color year after year, making it the low-maintenance choice for outdoor spaces that demand both style and longevity.

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Envello siding & soffits

Elevate every exterior

Envello pairs the timeless look of timber siding with the durability of our advanced resin mineral board. Hand-molded from real oak masters, it captures every detail of the grain. Containing no wood, it retains its color and character without the need for staining, sealing or painting.

Two profiles, two looks: Board & Batten+ for bold vertical definition, and Shadow Line+ for depth and clean horizontal lines. Lasting protection for a building that asks nothing of you in return.

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Integrated Lastane® layer

Lastane® surface layer retains integrity of the boards over time and means no splinters on the surface.
Low maintenance

The surface layer needs no sanding, staining or oiling. Simply clean as the project location requires.
Hand-molded & colored

Every board is molded from specially selected oak masters and hand-tinted by our craftsmen, so no two boards carry quite the same character.
A natural wood look

Hand-molded from real timber for an organic wood-grain appearance, replicating the intricate grain detail of natural oak.
Maximum durability

A fiber-reinforced closed cellular core provides strength and resilience while keeping the weight of each board down.
Recycled materials

Each board blends 38% recycled content, including limestone diverted from landfill, bonded in a polymer resin.
Wood-free, warp-free

The composition is entirely wood-free, eliminating rot and warping, and giving insects and pests nothing to attack.
Quality assurance

A trusted name in construction, accredited to ISO 9001 and specified with confidence on residential and commercial projects alike.
A long life outdoors

Designed to outlast timber by decades, which makes Millboard siding and decking the more considered choice long after the installation is finished.
UK-made, globally tested

Designed and manufactured in Warwickshire, tested independently around the world. British craftsmanship, innovation and an unwavering dedication to quality.

Since 1976

The Millboard story

A family business in Warwickshire, making boards that look like the finest oak, but without the associated drawbacks. Hand-molded from selected oak masters, hand-tinted, and fixed with Durafix® lost-head screws that virtually disappear into the Lastane® surface.

Time is the one part of the process we will not shorten. It is why ours still look right years later.

About Millboard