What should always be avoided during cold weather regarding attic ventilation?

Blocking soffit vents with insulation during cold weather should always be avoided because it can lead to poor attic ventilation, which creates an environment conducive to moisture buildup. When airflow is restricted, warm, moist air generated from inside the home rises into the attic where it can condense on cold surfaces, leading to potential problems such as mold growth, structural damage, and increased energy costs.

Maintaining adequate ventilation is crucial for regulating temperature and moisture levels in the attic, which helps to protect the roof and extend its lifespan. Soffit vents are meant to draw cool air into the attic, working in conjunction with other vents, like ridge vents, to ensure a constant flow of air. Proper ventilation prevents the potential for ice dams, which can form when warm air escapes and melts snow on the roof, only to refreeze at the eaves.

In this context, ensuring that soffit vents remain unobstructed is essential for effective attic ventilation, especially during cold weather.