How Long Does Attic Insulation Last

Batt insulation fiberglass or cellulose tends to fall down from crawl spaces or ceilings starting 15 to 20 years after installation.

How long does attic insulation last.

Unfortunately insulation doesn t last and perform effectively for years and years. When service life is included in the terms of a fiberglass insulation. But if you can t afford to shell out a few hundred bucks for this service never fear. At the same time cellulose loose fill foamboard loose fill and rock wool insulation can last up to 100 years.

According to home advisor insulating your attic can cost between 1700 to. The international association of certified home inspectors states batt loose fill fiberglass and cellulose insulation can all provide 100 years of warmth. Attic insulation option no 3. Keep reading for the details.

While it is true that newer insulation can last for quite a long time many homes are not equipped with modern insulation. Do a little research online and you ll find sites that claim insulation can last for 100 years or more. Loose fill insulation may settle over time leading to air leaks. Blown in insulation made from cellulose or mineral wool this type of insulation will also last as long as 100 years but is prone to settling and compacting.

While that sounds impressive it is important to understand that several unique factors about your home and attic determine the longevity of insulation in your attic. Homes that were built more than 10 years ago may not be up to the latest insulation standards so unless your house was recently built or you ve replaced your insulation within the last 10 years or so there s a good chance your home is not properly insulated. Typical insulation lifespan the international association of certified home inspectors states that spray foam insulation wrap tape and housewrap insulation can last for more than 80 years. Insulation that gets dirty or logged with dust will be less effective.

But this is in perfect conditions. Foam insulation can settle after a year and may need to be replaced to keep it fluffy and insulating properly. A century of service the expected service life of fiberglass insulation under ideal conditions is usually stated as 100 years. It starts with how old your insulation is.

While some insulation is built to last years there are times when you need to replace your insulation or add on more insulation to it. Modern homes are well insulated and more energy efficient than homes built even a decade ago. If you just moved into a newly built house two years ago you are most likely good to go. We ve rounded up all the most important know how about attic insulation costs products prep work and installation right here.