Ottawa experiences cold winters with heavy snow, ice dams and freeze–thaw cycles, plus seasonal storms with high winds, hail and heavy rain. Metal roofing generally performs well: it sheds snow and ice, resists wind uplift when engineered and fastened correctly, and—when using impact-rated materials and underlayments—offers strong hail resistance. Actual performance depends on roofing system design (profile, clips, underlayment), installer quality (fastening, flashing, ventilation) and material durability (gauge, coating, impact rating). Homeowners prioritise weather resilience to reduce leak and repair risk, limit insurance claims and extend roof life. Interlock Metal Roofing systems are engineered for durability, hail protection and wind resistance. For Ottawa, choose a tested system and certified installer to match local snow, ice and storm loads and evolving climate risks.