What is glass wool?

Glass wool is often used in air filters.

Glass wool is an industrial product made by spinning glass into a fibrous material that can be placed on mats and blankets. This product is used as insulation and in other applications such as air filters. It is available at home improvement stores and manufacturers may also produce wool for special purposes, such as insulation on aircraft, where standards may be higher for health and safety reasons. Several companies manufacture glass wool products along with lines of other insulation materials for a variety of applications.

Glass wool must go through the spinning process very similar to normal wool.

This product is made from molten glass mixed with a binder and passed through a fine sieve to turn it into delicate spun fibers. The fibers can be easily joined together and can be packaged in pre-cut batts or rolled batts. Blankets allow users to cut glass wool to the right size for the application, while blankets can be useful for patterned construction. Some glass wool products have a paper backing for easier handling. The article may include markings discussing the type and type of wool for the convenience of workers.

Glass wool can be applied to walls to help resist mildew.

For basic insulation in homes and other structures, this product can provide adequate loft and depth to limit heat transfer and block out some sound as well. It is also possible to purchase special-purpose glass wool designed as soundproofing for activities such as building sound booths or soundproofing a home in a noisy location, such as near a highway. Other specialty products are used in aeronautical applications and as insulators for equipment such as batteries.

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Glass wool is strong, durable and tough. It can potentially become a home for microbial growth if it gets wet, but otherwise it should resist mold and other problems. In applications such as construction, it is typically applied to walls coated with Tyvek® and other materials, which successfully keep water out of the building envelope. Special-purpose products are even more durable and can withstand harsh conditions.

Workers handling glass wool must be careful. It is an irritant that can cause itching and discomfort if it comes in contact with the skin, mucous membranes, or eyes. It can also cause lung problems if inhaled. Protective equipment, including long sleeves, gloves, eye protection and a respirator, is a good idea when handling this insulation product, especially special purpose products due to their greater strength. If someone develops symptoms of exposure, such as itching or wheezing, it is advisable to see a doctor.

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