Attic frost is a common concern during Canadian winters and often signals underlying issues in your home. Left unaddressed, frost can lead to water damage, mould growth, and serious structural problems.
Understanding the causes and prevention of attic frost is critical to maintaining a safe and efficient home.
What Causes Attic Frost?
Attic frost forms as warm, moist air from your living quarters rises into the cold attic. When moisture-laden air cools, it condenses and freezes on cold surfaces such as roof sheathing, nails, or insulation.
Common sources of attic moisture include:
- Poorly vented bathrooms or kitchens
- Gaps around attic hatches or recessed lighting
- High indoor humidity levels
Inadequate attic ventilation exacerbates the problem, trapping moisture and allowing frost to form.
As frost begins to melt during the day, water drips onto insulation and wood surfaces, amplifying moisture-related problems. The ongoing cycle of freezing and melting can cause significant long-term damage.
Why Frost is a Problem
Melting frost produces water, which can promote mould growth, impacting both air quality and health. Moisture degrades wooden structures and damages roofing materials over time. Wet insulation becomes less effective, resulting in increased energy bills.
Moisture issues can also cause ice dams, which put additional strain on your roof and gutters.
Preventing Attic Frost
Improving insulation reduces heat transfer from the home to the attic. Sealing air leaks around hatches, vents, and light fixtures keeps warm air from leaking into the attic.
Proper ventilation helps moisture escape, lowering the risk of condensation and frost. Ridge vents and soffit vents can further enhance ventilation. Controlling interior humidity with dehumidifiers or exhaust fans in kitchens and bathrooms helps to reduce surplus moisture.
We’re Here to Help
Have you noticed attic frost or suspect moisture problems? We are here to help!
Our experts can evaluate your insulation, ventilation, and air sealing to identify the underlying reason and propose solutions. Addressing attic frost soon can help you avoid costly repairs while also keeping your home safe and comfortable.
Call us today!
Taking steps to prevent attic frost ensures a healthier, more efficient home for years to come. Protect your home from moisture damage and enjoy the peace of mind that comes with a properly maintained attic.
