If you find evidence of active moisture intrusion — water entry through the foundation, an active roof leak, or significant mould growth — these conditions must be assessed and remediated by a qualified contractor before any insulation work begins.

Adding insulation over an active moisture problem does not solve it — it hides it.

Important safety warning — vermiculite insulation: Some Manitoba homes built before the mid-1980s may contain vermiculite insulation in the attic — a lightweight, pebble-like material ranging from 2–10mm in diameter, light brown, grey, or gold in colour, sometimes sold under the trade name Zonolite. Vermiculite insulation may contain asbestos.

Do not disturb vermiculite insulation. If you suspect your attic contains vermiculite, do not attempt to sample, remove, or add insulation over it yourself. Have the material tested by an approved laboratory before proceeding with any attic work. Contact Safe Manitoba or your local public health authority for the name of an approved testing laboratory and for guidance on asbestos-containing materials in your home.

A quick inspection helps, but a home energy assessment is the best way to know how well your insulation is really performing.

For more on EnerGuide Evaluation and how it can help you prioritize upgrades, Check out the Home Energy Assessment Guide → Why Get a Home Energy Assessment?