Bathroom Ventilation and Lighting Explained: CFM, Sone Ratings, and CRI Made Simple
A bathroom can look perfect and still fail in daily use. The most common issues are not visible in photos. They show up as fogged mirrors, lingering moisture, poor lighting, and discomfort. Ventilation and lighting are the systems that quietly define how a bathroom performs. When done right, you do not notice them. When done wrong, you feel it every day. Key Takeaways ✓ Ventilation removes moisture and prevents mould growth ✓ Fan size is measured in CFM based on room size ✓ Sone ratings determine how quiet a fan is ✓ Lighting should include task, ambient, and accent layers ✓ High CRI lighting improves visibility and accuracy Why Ventilation Matters More Than You Think Bathrooms produce constant moisture. From showers and baths, steam builds up quickly. Without proper airflow, that moisture settles on surfaces. Over time, this leads to: Mould growth Peeling paint Damaged cabinetry Lingering odours Ventilation is not optional. It is required for both comfor...