This "breathing" ability is crucial for maintaining a healthy indoor environment, as it prevents trapped moisture that can lead to mold, mildew, and deterioration of your wall structures. Furthermore, the highly alkaline nature of cured lime creates a surface that is naturally resistant to mold and bacteria, contributing to better indoor air quality and a hypoallergenic home. Achieving the perfect finish with a lime-based coating requires a different approach than with standard paint. The primary advantage lies in its vapor permeability. Because it is a mineral-based product, lime paint does not seal walls in a plastic film like acrylic paints. Instead, it allows moisture vapor to pass through it effortlessly.