ROOFNOW™ Ontario

Inspection Checklist for Metal Versus Asphalt Roofing

When Ontario weather changes quickly, roof details are tested by water, wind, snow, ice, and heat. This page focuses on metal versus asphalt roofing and why it matters for long-term roof performance.

Inspection Checklist

The strongest roofing decisions come from understanding the whole assembly: deck condition, underlayment, flashing, ventilation, fasteners, drainage, and installation workmanship.

This topic matters because when homeowners compare long-term replacement cycles. Homeowners should pay attention to service life, maintenance, weather exposure, and lifecycle cost when reviewing roof condition or comparing roofing quotes.

What Homeowners Should Check

Start with the visible roof area, then check the attic if it is safe and accessible. Look for staining, soft decking, blocked airflow, loose materials, rust, cracking, lifted edges, or signs that water is moving behind the surface layer.

Before approving any roof work, homeowners should ask how the contractor plans to address the cause, not only the surface symptom.

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