Mold and mildew are both fungi that can affect your home and health. The main difference between the two is mold is a type of fungus that grows on surfaces, whereas mildew is a type of fungi that grows on damp surfaces. Mold tends to be black, green, or white and can grow on damp surfaces such as walls and ceilings. Mildew is usually white or gray and grows on damp surfaces such as fabric, leather, and paper.
Mold can cause damage to the structure of your home, whereas mildew usually does not cause any structural damage. Mold can also cause health problems, such as allergies and respiratory issues, while mildew does not usually cause any health problems. It is important to note that both mold and mildew can spread quickly in humid environments.