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Shadow Line+

The Envello Shadow Line+ cladding board has been moulded from real oak masters and designed to perfectly replicate smooth timber with a flat grained finish, giving a clean authentic look. The increased width of the Shadow Line+ board compared to standard timber boards means there is larger grain detail. This gives an enhanced visual impact, without risk of the board twisting or warping over time.
Tested to the rigorous demands of BS EN 13501-1, the Shadow Line+ system achieves a classification of Euroclass D.

RRP Per m2


RRP Per Board


Euroclass D fire rated system

UKAS accredited to BS EN 13501-1

Impact and weather resistant

maintains its integrity, even in the most challenging climates

UV stability

Automative grade paint deliver exceptionallly high UV stability

Moisture resistant

Exceptional resistance to moisture

Hand moulded & coloured

Hand finished by our master craftsmen

Increased thermal performance

0.108 (W/mK) Lambda vale

Easy to install

Lightweight and easy-to handle

Wood free

No algae growth or rotting

Limed Oak 181mm
Dimensions (mm)
200 x 18 x 3600mm
Fixings per board
Weight per m2 (kg)
Boards per m2


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Frequently asked questions

    There will always be a slight variance in the board’s dimensions due to the fact that we mould from natural oak, and due to the pressure of the moulding process. Despite this, we calibrate the boards to maintain as consistent a profile as possible. The manufacturing tolerances are: Width: ± 3mm. Length: ± 5mm. Thickness: ± 2mm. The dimensions of the Weathered Oak style may vary more between moulds due to the fact that they are moulded from timeworn oak with minimal changes to the dimensions. When working with the boards, packers may be required to create a flush finish between two boards.

    The Shadow Line+ cladding boards have been tested to BS EN 13501-1 and have a classification of D-s3, d0.

    The Board & Batten range is also crafted with fire retardants in the board composition, but it is not fire rated and carries no ‘reaction to fire’ certificate.

    The responsibility for the cladding’s suitability in the required location is to be determined by a certified building professional (building control, building insurance, fire officer, etc). Millboard will not be held responsible for incorrect specification, application, or product installation in areas not in accordance with government guidance, in the UK or abroad. Current guidance should be gained from the government website relating to the geographical project location, England’s building regulation Approved Document B can be found on -

    From what to expect when you first unpack your Millboard, to aftercare tips and answers to all of your most common questions. Visit our FAQs page now for all of your Millboard related queries.

    Sample basket