Insulating Your Air Ducts: Types of Insulation Explained

Air ducts are a major source of dust and allergens in your home, and insulation is an essential part of keeping them clean. There are three main types of insulation used in air ducts: cellulose, fiberglass, and mineral wool (rock or slag). All of these materials are made from recycled waste materials.


is primarily composed of recycled newsprint. It is lightweight and easy to install, making it a great choice for small areas.

It is also fire-resistant and can provide good soundproofing. However, it is not as durable as other types of insulation.


insulation is made from glass fibers that are spun into a mat. It is more durable than cellulose and can provide better soundproofing. Most fiberglass products contain between 40 and 60% recycled glass.

Mineral wool

insulation is made from rock or slag wool.

It is more expensive than cellulose or fiberglass, but it is also more durable and fire-resistant. It is usually made from 75% post-industrial recycled content. When choosing the type of insulation for your air ducts, you should consider your budget, the size of the area you need to insulate, and the type of duct you have. Each type of insulation has its own advantages and disadvantages, so it's important to do your research before making a decision. Today's Superior Air Duct Cleaning blog will provide you with more information about the different types of insulation available for your home or commercial building.