Interlock Roofing Ltd. has introduced Interlock Metal Siding and wall cladding panels, extending its lifetime aluminum system from roofs to exterior walls. The new panels, made from the same heavy-gauge aluminum and finished with the Alunar Coating System, are available in profiles, colors, and trims that match the company's roofing products, allowing a home's roof and walls to share a unified aluminum finish. This expansion addresses compatibility issues that often arise when roof and wall products come from different manufacturers, simplifying installation and warranty coverage.
The debut installations include custom homes in Whistler, British Columbia, showcasing the product's aesthetic and functional benefits. Interlock Metal Siding is offered in four architectural profiles—Slate, Cedar Shingle, Shake, and Standing Seam—which can be combined within a single color family. The panels feature the Alunar Coating System, a multi-layer architectural coating with Cool Roof infrared-reflective pigments that reduce solar heat gain on walls. Non-combustible aluminum construction carries a Class A fire rating, a critical feature for properties in wildfire-prone regions.
Aluminum's moisture resistance prevents rot, warp, or cracking through freeze-thaw cycles, and the factory-baked finish resists chalking and fading, eliminating the need for repainting. The system also resists insects and coastal salt-air corrosion. Four-way interlocking panels install over most existing wall substrates by certified installers and require no painting, sealing, or staining over their lifespan. The aluminum is largely recycled in content and about 95 percent recyclable at end of life.
"Homeowners already trust our aluminum roofing to protect their home for a lifetime," said Scott Plumptree, Director of Marketing at Interlock Roofing Ltd. "Extending that same panel, coating, and color system to siding means the entire exterior performs to one standard and reads as one intentional design."
Interlock Metal Siding and aluminum wall cladding are available across the United States and Canada through certified local installers for both new construction and re-cladding projects. The product is backed by a Lifetime Limited, 50-year transferable warranty. For more information, visit interlockroofing.com/siding.
