Metal Roofing Built for Markham'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 Markham and SouthāCentral Ontario
⢠Exclusive authorized installer of Interlock® Lifetime Aluminum Roofing Systems in the Markham area
⢠Designed for Markhamās inland climate: heavy snow seasons, freezeāthaw cycles and seasonal storms
⢠Snow-shedding metal panels reduce buildup and help prevent ice dams common during Markhamās freezeāthaw transitions
⢠Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
⢠Coated with the AlunarĀ® Coating System (no visible aluminum surface) for durable finish retention through humid summers and winter roadāsalt exposure
⢠Tested to 193+ km/h for severe gusts and storm winds that occasionally affect the GTA and Markham neighbourhoods
⢠Class A fire-rated available for homeowners seeking enhanced fire performance and ember resistance where applicable
⢠UL 2218 Class 4 impact resistance to protect against hail, falling branches and seasonal debris
⢠Energy-efficient coolāroof behaviour lowers summer heat gain and improves attic comfort during Markham heat waves
⢠Solarācompatible design supports modern bracketāmounted photovoltaic systems for local rooftop solar installations
⢠Sustainable, fully recyclable aluminum reduces landfill waste and outlasts asphalt shingles in Markhamās variable climate
⢠Lowāmaintenance finish resists moss and biological growth on shaded, treeālined roofs common in Markham communities
⢠Backed by a LifetimeāLimited transferable warranty to support longāterm protection and resale value in the Markham housing market
Interlock Metal Roofing (Ontario) Ltd.
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InterlockĀ® Aluminum Roofing ā all-climates performance specs for Markham, 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 (wonāt 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 Markham, Ontario:
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Metal Roofing FAQs for Homeowners in Markham
The following metal roofing FAQs are designed specifically for homeowners in Markham, 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, Interlockās Lifetime Aluminum Roofing System is engineered to provide long-term durability, energy efficiency, and peace of mind in Markham.
