The National Center for Healthy Housing Mold Molds are simple, microscopic organisms that can grow virtually anywhere, both in homes and outdoors. Along with mushrooms, yeasts, and mildew, molds are classified as fungi. Molds typically consist of a network of threadlike filaments that infiltrate the surface on which the mold is growing. Molds reproduce by releasing spores, which are ...

Molds are ubiquitous, and mold spores are a common component of household and workplace dust; however, when mold spores are present in large quantities, they can present a health hazard to humans, potentially causing allergic reactions and respiratory problems.

Mold What to know Mold can look like spots of many different colors, and it can smell musty. If you see or smell mold, you should remove it. If mold is growing in your home, you need to clean up the mold and fix the moisture problem. Learn what mold is, how to prevent it, and how to clean it up.

Let’s examine the types of mold you’re most likely to find in your home, the potential effects on your health, and how to get rid of mold.

This website provides guidance about mold and moisture for homes, schools, multifamily and commercial buildings. Molds can have a big impact on indoor air quality.

Learn about the common causes of mold in home, the health risks it poses, and effective ways to keep your living space mold-free.