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Attic

Mold, ventilation, animal intrusion — what lives above the ceiling

8 guides in this series

Start with Guide 1 →

All 8 guides in this series

The Complete Attic Inspection Guide for Ontario Buyers

The attic reveals more about a home than any other single space. Roof condition, insulation, ventilation, moisture, and structural integrity — all visible from above.

Attic Mold in Ontario — Causes, Costs, and What Inspectors Find

Attic mold is the most common undisclosed defect in Ontario real estate. Here is why it forms, what remediation costs, and how thermal imaging finds it.

Attic Ventilation Requirements — Ontario Building Code Standards

Ontario building code specifies net free ventilation area ratios. Most existing homes fail to meet current requirements.

Bathroom Fans Venting Into Attic — The Most Common Violation

Bathroom exhaust must vent to the exterior. When it vents into the attic instead, moisture accumulates on roof decking and mold follows.

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Animal Intrusion — Raccoons, Squirrels, and What They Destroy

Wildlife intrusion through soffits and roof vents damages insulation, electrical, and creates health hazards from feces and urine contamination.

Attic Structure — Rafters, Trusses, and Signs of Overloading

Cracked rafters, sagging ridge boards, and modified trusses indicate structural problems that affect the entire home. Here is what inspectors assess.

Attic Storage — When Extra Space Becomes a Structural Problem

Using attic space for storage loads trusses designed only for ceiling weight. Here is when attic storage crosses from convenient to dangerous.

When to Walk Away — Attic Issues That Should Stop a Purchase

Widespread mold, structural modification to trusses, and active animal colonies are among the attic findings that should pause a purchase.

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