This specification guide covers Millboard Envello Shadow Line+ siding, including available colors, board dimensions, installation requirements, fastening systems, trim profiles, and performance testing data for exterior cladding applications. Shadow Line+ is designed to deliver a clean, contemporary wood-look siding profile with the durability and lower maintenance of a wood-free material.
Inside, you’ll find details on the elastomer surface layer, reinforced mineral resin core, thermal performance, fire testing, wind load testing, and installation methods for both horizontal and vertical applications. The guide also outlines compatible external and internal corner profiles, reveal boards, color-matched screws, and accessory systems designed to support modern architectural detailing across siding and soffit applications.
Envello Shadow Line+ is available in multiple finishes including Golden Oak, Coppered Oak, Burnt Cedar, Smoked Oak, Salt Blue, Sage Green, Anthracite, Antique Oak, and Limed Oak. The collection is moisture resistant, WUI certified, weather resistant, and engineered for demanding exterior environments where a refined wood look and clean horizontal or vertical lines are desired.
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