The rust-proof, lifetime metal roof engineered for New England weather.

Built for New England, made in aluminum

From the Maine coast to the Berkshires, New England throws everything at a roof: salt air, nor’easters, hurricane-force gusts, Class-IV hail, heavy snow, ice dams, and relentless freeze-thaw. Interlock builds every system in aluminum for one decisive reason — aluminum never rusts. Where steel roofs rely on coatings that corrode at cut edges and scratches, aluminum forms a stable, self-protecting surface that shrugs off salt, humidity, and time.

Engineered to be your last roof

Each panel is a 4-way interlocking system that locks to its neighbors on all four sides for exceptional wind resistance, finished with the multi-coat Alunar® cool-roof coating that reflects heat and cuts summer cooling costs. At roughly 1 lb per square foot, an Interlock roof is light enough to install over most existing roofs without structural reinforcement.

The proof

Class A fire rating, UL 2218 Class 4 impact resistance (the maximum hail rating), and ICC-ES ESR-1790 evaluation — all backed by a Lifetime Limited 50-Year Transferable Warranty. The smooth interlocking surface sheds snow and resists the ice dams that wreck ordinary New England roofs, and every profile is solar-compatible.

Six looks, one lifetime material

Choose the profile that suits your home: Slate, Cedar Shingle, Shake, Mediterranean Tile, Standing Seam, or Solid Copper — all in rust-proof, ~95% recycled aluminum.