Metal Roofing Built for London's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection

Performance you can measure (all climates):
• Proudly manufactured in Canada by a family-owned company, serving homeowners across London and Southwestern Ontario
• Authorized Interlock® Lifetime Aluminum Roofing Systems installer for the London region
• Designed for London’s inland climate with emphasis on snow loads, freeze–thaw cycles and humid summers
• Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
• Alunar® Coating System (no visible aluminum surface) provides durable, corrosion-resistant finish and colour retention
• Corrosion resistance engineered to withstand chloride exposure from winter road salt and de‑icing near London’s arterial routes
• Built and tested to resist 193+ km/h wind events, offering measurable protection against severe gusts that can impact Southwestern Ontario
• Snow-shedding panels and engineered flashings reduce standing snow, lower structural snow loads and help limit ice-dam formation during freeze–thaw cycles
• Class A fire-rated available to address ember and ignition risk during regional dry spells
• UL 2218 Class 4 impact resistance for protection from hail, falling branches and storm debris encountered in summer storms
• Cool-roof properties reduce attic heat gain during London heat waves and improve year-round thermal performance
• Solar-compatible geometry and engineered attachment points for modern bracket-mounted photovoltaic systems on London roofs
• Built to shed heavy rainfall from convective storms and atmospheric-river-driven downpours that can produce intense runoff in the region
• Low-maintenance aluminium surface resists moss and biological growth prevalent in London’s humid conditions
• Fully recyclable aluminium construction with a Lifetime‑Limited transferable warranty for long-term protection and resale value in London
• Precision manufacturing tolerances and tested connections deliver repeatable field performance across neighbourhoods throughout London and Southwestern Ontario
Interlock Metal Roofing (Ontario) Ltd.
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Interlock® Aluminum Roofing — all-climates performance specs for London, Ontario
| Spec / Rating | Climate / Risk Factor + What It Solves |
|---|---|
| Wind resistance: 120+ mph (193+ kph) | Extreme wind, hurricanes, storm uplift: full interlocking attachment helps prevent blow-offs, edge lifting, and panel loss in high-gust events. |
| Fire rating: Class A (with proper assembly) | Wildfire, embers, radiant heat, chimney sparks: non-combustible roof assembly provides the highest residential fire protection rating. |
| Hail resistance: UL 2218 Class 4 | Hail and impact debris: highest impact classification; resists cracking, splitting, and surface loss common with asphalt under hail strikes. |
| Snow & ice performance: interlocking, shedding profile | Heavy snow, freeze-thaw, ice dams: smooth aluminum sheds snow efficiently and the interlocking design helps block water intrusion when melt-refreeze cycles occur. (Final snow-load capacity depends on roof structure and local code.) |
| Corrosion resistance: aluminum (won’t rust) | Salt air, coastal humidity, wet climates: aluminum naturally resists rust and corrosion, reducing long-term failure risk in marine or high-moisture environments. |
| Heat / UV durability: baked-on coating system | High heat, intense sun, thermal cycling: coatings resist UV breakdown and temperature-swing fatigue, slowing fading and surface degradation. |
| Moss / algae resistance: smooth coated surface | Wet shade, organic growth: low-porosity metal surface gives moss/algae less to grip, reducing staining and maintenance. |
| Material: heavy-gauge aluminum roof profiles (Slate / Shake / Shingle / Tile / Standing Seam) | All-season structural stability: lightweight, dent-resistant metal system stays stable through large hot-cold swings and severe weather. (Add exact alloy + thickness for maximum spec proof.) |
| Expected lifespan: 50+ years | Long-term durability across climates: avoids re-roof cycles typical of shorter-life materials, even in high-stress environments. |
| Warranty: Lifetime-Limited, non-prorated + 50-year transferable | Lifetime protection + resale value: guarantees long-term material confidence and transfers to future owners. |
Available Profiles in London, Ontario:
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Metal Roofing FAQs for Homeowners in London
The following metal roofing FAQs are designed specifically for homeowners in London, Ontario. Whether you are building a new home or replacing an existing roof, understanding how roofing materials perform in local weather conditions is essential. From wind and storm protection to fire resistance, hail impact, snow loads, and coastal moisture exposure, Interlock’s Lifetime Aluminum Roofing System is engineered to provide long-term durability, energy efficiency, and peace of mind in London.
