Homeowners in Metro Vancouver should monitor their properties for several physical and environmental indicators that a professional roof inspection is necessary. Early detection is particularly critical in the rainy Pacific Northwest climate to prevent minor issues from escalating into structural damage.

Visible exterior signs include:

• Granule loss on shingles, which creates bald patches and accelerates erosion.
• Curling edges on asphalt shingles, often caused by heavy winds.
• Sagging or dipping sections of the roof, which signal potential structural weakening or deck rot.
• Moss or algae proliferation, as these organisms thrive in damp areas and erode roofing materials over time.
• Damaged or failing flashing around chimneys and vents.
• Persistent water ponding on commercial flat roofs.

Subtle interior signs also indicate hidden leaks that require immediate attention:

• Water stains or damp spots on ceilings.
• Musty odors in the attic, suggesting trapped moisture.
• Evidence of attic moisture stains or inadequate ventilation.

Professional inspections are recommended bi-annually (in spring and fall) to address damage from winter ice or summer UV exposure. If you notice any of these signs, a professional assessment is advised to preserve property value and ensure safety compliance.