Fiberglass insulation is less dense than other types of insulation and does not create an airtight seal, which means air can travel freely through the insulation. This is called air leakage and it's one of the most common sources of energy loss in a house.
The main concerns with use of fiberglass insulation are skin, eye, and respiratory tract irritation.
Misused & Susceptible to Water
Often fiberglass insulation is misused when it's installed. An example of misuse is when it is installed in a basement ceiling. Fiberglass insulation is easy for air to move through and it loses a high percentage of its R-value when it gets water into it.
Fiberglass batts can sag over time, creating gaps that compromise performance. Other problems, such as dust or mold growth, can occur if the installation area experiences a lot of moisture or air infiltration.
No long-term health effects should occur from touching fiberglass. Eyes may become red and irritated after exposure to fiberglass. Soreness in the nose and throat can result when fibers are inhaled. Asthma and bronchitis can be aggravated by exposure to fiberglass.
The potential health effects of fiberglass exposure
However, just as with the chemical flame retardants, fiberglass carries its own set of adverse health effects when it escapes into the environment. For example, airborne fiberglass strands can cause skin irritation and respiratory problems when inhaled.
Based on extensive scientific research and evaluations by leading health authorities, fiberglass insulation, including glass wool fibers, is not associated with cancer or serious long-term health effects. While it can cause temporary irritation, proper handling makes these effects manageable.
However, due to its construction with natural materials, eventually the product will lose effectiveness. Fiberglass insulation typically needs to be replaced 15-20 years into it's life, as it can easily become dirty, wet, moldy, and ineffective if there's a roof leak or water damage of any kind.
Not Using Enough Resin
Using too little resin with fiberglass can also be a problem. If you don't use enough resin, the fiberglass may not stick to the surface properly. It can also lead to fiberglass fibers fraying and your final product could be brittle and weak.
Spray foam: Open-cell or closed-cell spray foam can provide excellent insulation and air sealing in one application. Combination approach: Use spray foam to seal air leaks and fill odd-shaped cavities, then supplement with batt insulation for cost-effectiveness.
Mineral Wool Insulation
In many ways, mineral wool is a superior insulation product. It has a higher R-value per inch compared to fiberglass, about a 22-37% higher R-value. It contains 70% recycled material, making it a greener product than fiberglass at 20-30% recycled material..
Exposed insulation poses several safety risks, especially in homes with children and pets. Fiberglass insulation is not highly flammable, but it can still pose a fire risk. Exposed insulation can increase the risk of ignition and rapid flame spread. Always keep exposed insulation away from heat sources.
The best non-toxic insulation is either mineral wool or foam insulation inserts.
Fiberglass insulation can potentially last 80 to 100 years if it is undamaged, but bits can start to fall from fiberglass batts after 15 or 20 years. If shouldn't need to be replaced after such a short time, but it's worth an inspection.
Fiberglass Batt and Roll Insulation
Fiberglass batt and roll insulation is a common and budget-friendly option. This insulation comes in pre-cut batts or long rolls, making it easy to fit between the framing members, like joists and trusses, in your attic.
However, “by the late 1970s consumers and health organizations established a solid link between asbestos and lung disease. In 1980, asbestos production was banned throughout the U.S. and many other countries” (hunker.com). As a result, cellulose insulation was introduced as an alternative to fiberglass.
A: The nice thing about fiberglass tubs and showers is that no matter how dirty they become, they are fairly easy to clean. Be careful not to use any abrasives on the fiberglass, such as scouring pads, steel wool or gritty cleaning solutions. “Soft Scrub” may be used sparingly on soap scum buildup.
Fiberglass and fiberglass resin it doesn't rot but if you leave it in the sun the sun will break down the material and you'll have what they call dry rot. It has nothing to do with bacteria or decay it's that the sun and the ultraviolet rays have broken down the fiberglass and now it's starting to fall apart.
A variety of solvents have been used to clean processing equipment, metal parts and tools after a polyester resin (fiberglass) has cured on them. Acetone, methyl ethyl ketone, and diacetone alcohol are the solvents most commonly used to remove cured polyester resin from the substrates to which it is attached.
Air Leakage
Fiberglass insulation is less dense than other types of insulation and does not create an airtight seal, which means air can travel freely through the insulation. This is called air leakage and it's one of the most common sources of energy loss in a house.
Benefits of Replacing Your Attic Insulation
Enhanced energy efficiency: New insulation can help reduce energy costs by improving your home's ability to mitigate thermal transfer. Indoor air quality: You can improve the air quality in your home by removing old insulation that may harbor mold, dust or allergens.
Once insulation gets wet, it loses its ability to trap air effectively, reducing its thermal resistance (R-value). Moisture can also lead to mold growth, which poses health risks and can damage the surrounding structure. Fiberglass or cellulose insulation must be removed and replaced.
In general, the color of insulation doesn't equal better performance over another color. Whether it's pink, white, brown, or yellow—color doesn't influence dependability, reliability, or the products effectiveness.
Smaller fibers may be inhaled deep into the lungs. Inhaled fibers are removed from the body partially through sneezing or coughing, and through the body's defense mechanisms. Fiberglass that reaches the lungs may remain in the lungs or the thoracic region. Ingested fiberglass is removed from the body via feces.
Prolonged skin contact with fiberglass can cause irritation and itching, leading to fiberglass dermatitis. This condition presents as a rash, redness, and sometimes small bumps. In severe cases, it can cause painful blisters.