Millboard, a UK-based manufacturer of premium outdoor living solutions, adds to two new colors to its popular Envello Shadow Line+ range of siding. Inspired by nature, these new hues provide even more options to enhance outdoor spaces with beautiful long-lasting siding that requires minimal upkeep.

The Envello Shadow Line+ range from Millboard is renowned for its durability, authentic wood look, and low-maintenance features. Shadow Line+ is a mineral resin composite that contains no wood and no recycled plastic. The introduction of Salt Blue and Sage Green extends the range's versatility, allowing customers to create unique, stylish, and enduring outdoor environments.

Salt Blue captures the essence of coastal tranquillity, evoking the calming tones of the sea. Meanwhile, Sage Green brings a touch of natural sophistication, seamlessly blending with the lush surroundings of outdoor spaces. These new colors enable homeowners to express their individual style while enjoying the benefits of high-performance outdoor siding.

"Our dedication to transforming outdoor living experiences remains steadfast, and the introduction of Salt Blue and Sage Green to our Shadow Line+ range is a testament to that dedication," said Harvey Douglass, Chief Operating Officer of Millboard. "We believe in providing our customers with the tools to Live. Life. Outside. These new colors not only enhance the visual appeal of outdoor spaces but also embody our ethos of embracing the beauty of the great outdoors. We are excited to see how homeowners will integrate these new shades into their outdoor designs, creating spaces that inspire, rejuvenate, and connect with the surrounding environment."

Millboard’s commitment to innovation and quality is reflected in the Envello Shadow Line+ range, known for its weather-resistant properties, eco-friendly materials, and remarkable longevity. Homeowners can now choose from a total of seven colors in the Shadow Line+ range, ensuring a perfect match for any outdoor design vision.

The Benefits of Envello Shadow Line+ Salt Blue and Sage Green include:

  • Advanced Dimensional Stability: Shadow Line+ provides a drastically reduced expansion and contraction rate, ensuring superior stability in various weather conditions, when compared to other siding options. The siding's innovative design significantly reduces the risk of warping and distortion that is commonly associated with temperature fluctuations.
  • Authentic Wood Esthetics with Low Maintenance: Shadow Line+ captures the timeless beauty of real wood without the associated high maintenance.  Envello is a mineral resin composite that is engineered to stand the test of time.
  • Made in Great Britain: Shadow Line+ has been meticulously developed by Millboard’s technical experts and is manufactured exclusively at our Warwickshire-based facilities in the UK.
  • Florida Q-Lab Testing: Shadow Line+ undergoes rigorous testing in Florida labs, ensuring that the product meets and exceeds industry standards for quality, durability, and performance.
  • 15 Year Warranty:  Shadow Line+ is an ideal choice for long-term projects, as the 15-year Limited Structural warranty makes it an enduring solution for residential and commercial applications.
  • Artisan Craftsmanship: Shadow Line+ is molded from real timber and each board is individually hand-painted, no project is ever the same. 


The Salt Blue and Sage Green additions to the Shadow Line+ range will be available for purchase from February 27th 2024. For more information on Millboard Envello Shadow Line+ Salt Blue and Sage Green, visit