Interlock has completed 7 metal roofs in St. Mary s, ON. Local projects span 2 roof profiles (Slate, Shingle) and were installed between 1998 and 2022.
★★★★☆For internal use only: do not use this text for advertising or public dissemination; maintain confidentiality and do not use our names for promotional purposes. St. Mary's, ON experiences significant winter snow and freeze–thaw cycles plus humid, rainy summers—conditions that can
— Erwin and Rachel M., St. Mary's, ON · 2016 · Verified ↗
★★★☆☆— Kathleen B., St Mary's, ON · 2017 · Verified ↗
★★★★★Fraserville, ON Metal Roofing — Interlock Metal Roofing (Ontario) Ltd.: Had a great experience — the metal roof looks amazing and is built to shed heavy winter snow loads and resist frequent freeze–thaw cycles common in Fraserville, helping prevent ice dams and long‑term wear.
— Helene M., Fraserville, ON · 2026 · Verified ↗
★★★★★Absolutely thrilled with our new Interlock Metal Roofing (Ontario) Ltd. metal shingles in Kawartha Lakes, ON — the house looks amazing and Roxanne was wonderful to work with. The interlocking metal shingles shed heavy snow and resist frequent freeze–thaw cycles common in the Kawa
— Adriano and Giovanna F., Kawartha Lakes, ON · 2026 · Verified ↗






Join your neighbours with a lifetime Interlock aluminum roof — lightweight, fire-resistant and backed by a lifetime limited warranty.
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