Many homeowners try to mask old apartment ceiling stains with mold-resistant paint, only to face recurring leaks and mildew after the first rainy season. Learn why fully demolishing down to the raw concrete slab and following a standardized leak repair workflow is the only way to ensure long-lasting, hassle-free results. Many homeowners try to mask old apartment ceiling stains with mold-resistant paint, only to face recurring leaks and mildew after the first rainy season. Learn why fully demolishing down to the raw concrete slab and following a standardized leak repair workflow is the only way to ensure long-lasting, hassle-free results. Many homeowners try to mask old apartment ceiling stains with mold-resistant paint, only to face recurring leaks and mildew after