Expert Tips: How Long Does Insulation Last? (2024 Update) (2024)

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Feeling chilled? It may be a sign that it is time to replace your home’s insulation!

Most of us don’t think about the insulation of our homes on a daily basis. The truth is that it can affect many different areas of your home life without you even noticing. But if you’ve never thought about replacing your instullation, you are not alone.

An installation replacement brings up lots of questions for the average homeowner, including

  • When should I replace my insulation?
  • What types of insulation material are available?
  • How much will it cost?
  • How long does insulation last?

If those questions sound familiar, you’ve come to the right place. In this guide, we’ll cover everything you need to know about replacing insulation in your home.

Expert Tips: How Long Does Insulation Last? (2024 Update) (1)

Signs It’s Time to Replace Insulation

Wondering whether you have to replace your insulation or if it can last a little longer? Here are some telltale signs that your insulation may be on its way out.

  • Age đŸ‘ŽđŸŒ – Insulation is typically pretty hearty. For most homes, it can last for 20-80 years! That being said, like all things, insulation tends to wear down over time. If you are living in an older home and encountering some of the following problems, it may be time for a replacement.
  • High Energy Bills 📈 – Are your energy bills unusually high? It could be that your insulation material is too old to properly protect your home from the outside air.
  • Moldy Scent 👃 – Got a musty odor in your home or noticing your allergy symptoms acting up? Old insulation allows moisture to get into your walls, resulting in mildew and mold growth.
  • Drafty House đŸŒŹïž – If your house feels drafty, even with windows and doors closed, it’s a sure sign that your insulation isn’t up to snuff.
  • Pest Infestation 🐁 – Pests love certain types of insulation material to make their nests. If you’re noticing an uptick in mice and other pests in your house, they may have found a way to get past your insulation and turn it into a comfy home.

What Types of Insulation Are There?

Expert Tips: How Long Does Insulation Last? (2024 Update) (2)

One of the most overwhelming choices for homeowners is deciding what type of insulation they should replace their existing insulation with. There is a wide range of materials available on the market, each with its own unique pros and cons. Here are some of the most popular types available.

Blanket Insulation

If you knock down your walls, chances are that you would find blanket insulation already there. Blanket insulation is one of the most popular types of insulation materials on the market. A type of fiberglass insulation, it typically arrives in a roll and is unrolled and affixed to the wall. This type of insulation is usually cut with a utility knife to fit your space.

This is a highly affordable type of insulation, coming in at about $30 per roll. While it insulates effectively, it is prone to breaking down after a decade or two, meaning you will likely find yourself facing insulation problems as your home ages.

Concrete Insulation

When it comes to durable insulation, concrete certainly takes the cake! Concrete insulation is typically only used when you are constructing your home. The concrete blocks are used to create the foundation of your home and then filled with things like steel wool insulation to stop air leaks.

When it comes to insulation replacement, we generally would advise against concrete insulation unless you are doing a major renovation of your space.

Foam Board Insulation

Expert Tips: How Long Does Insulation Last? (2024 Update) (3)

Foam board insulation is a popular material choice for basem*nts or areas of your home that are prone to moisture collection. Foam board is resistant to moisture retention and mold growth, making it an excellent choice for basem*nts and attics alike.

Loose Fill Insulation

When it comes to filling in gaps in your existing insulation, many homeowners opt to have loose fill insulation materials installed. Also referred to as “blown in insulation,” this is a fiberglass insulation blend that a professional can place in any gaps in your existing insulation.

While it’s a messy process, it’s a hugely effective way to insulate your house. Expect to pay between $600-$1200 per 1000 square feet.

Spray Foam Insulation

More and more homeowners are turning to spray foam as an insulation solution. Spray foam is great for climates that have a lot of extremes in weather, as it won’t expand and contract with changing temperatures. It’s also excellent at repelling water and keeping your home dry and insulated.

That being said, spray foam insulation can be 2-3 times more expensive than standard insulation made out of fiberglass.

How Long Does Insulation Last? ⏳

The longevity of your insulation is hugely dependent on the type of insulation material you choose and how your insulation is installed.

For most types of insulation, you can expect it to last 15 to 20 years before starting to break down. However, sturdy forms of insulation, such as spray foam, could last you around 80 years before needing to be replaced. Contact us today to learn more about roof insulation longevity and maintaining peak performance.​

Expert Tips: How Long Does Insulation Last? (2024 Update) (2024)

FAQs

How long will insulation last? â€ș

Unless damaged, it can last 80 to 100 years in most houses before it needs to be replaced. However, insulation can start falling from fiberglass batts after 15 to 20 years, so if your insulation was installed in batts well over a decade ago, it might be time for an inspection or a home energy audit.

What is the longest lasting insulation? â€ș

Highlights
  • Mineral wool and fiberglass are the longest-lasting insulation materials, with lifespans of nearly a century.
  • Insulation should be checked regularly for water damage and pest infestations.
  • A sudden spike in your energy bills could be a sign that your insulation is damaged and needs replacing.
Dec 11, 2023

What is the life expectancy of blown in fiberglass insulation? â€ș

Blown-in insulation typically lasts for about 20 to 30 years. Proper installation and conditions can extend its longevity. Choosing the right insulation for your home is crucial for energy efficiency and comfort.

What is the life expectancy of insulation materials? â€ș

Cellulose insulation usually lasts 20 to 30 years before it starts to degrade, and mineral wool also lasts decades as long as it is not damaged. Spray foam insulation is one of the longest-lasting. Many homeowners never have to replace it in their lifetime.

What is the life span for insulation? â€ș

Signs It's Time to Replace Insulation

Here are some telltale signs that your insulation may be on its way out. Age đŸ‘ŽđŸŒ – Insulation is typically pretty hearty. For most homes, it can last for 20-80 years! That being said, like all things, insulation tends to wear down over time.

What is the life expectancy of exterior insulation? â€ș

Generally, home insulation lasts between 20–30 years or more with proper installation and maintenance. However, the lifespan of home insulation varies depending on several factors, such as the type of insulation, quality of installation, environmental factors, and maintenance and upkeep.

What insulation is most reliable? â€ș

Among the best insulation for homes, there is fiberglass insulation, and it can come in different forms - fiberglass rolls, foil fiberglass, fiberglass boards, fiberglass bets, rolls, etc.

What is the best insulation ever? â€ș

A: The best insulator in the world right now is most probably aerogel, with silica aerogels having thermal conductivities of less than 0.03 W/m*K in atmosphere. of aerogel preventing ice from melting on a hot plate at 80 degrees Celsius!

What is the healthiest type of home insulation? â€ș

The best non-toxic insulation is either mineral wool or foam insulation inserts.

How to tell if insulation needs to be replaced? â€ș

When to replace insulation: 7 signs that it's time
  1. Your upstairs feels really cold in the winter—and like a sauna in the summer.
  2. Your home was before 2005.
  3. Your energy bills keep increasing.
  4. The insulation looks ugly.
  5. You've got unwanted house guests.
  6. You're not seeing evidence of any insulation.
Feb 28, 2023

Should I remove old fiberglass insulation? â€ș

Now, the questions asked here is that old attic insulation removal necessary? Not necessarily, however, as we mentioned above, old fiberglass attic tends to grow mold and attract insects. If there isn't any water damage or signs of insect or rodent-infestation, you can get by not having attic insulation removal done.

What health problems can fiberglass insulation cause? â€ș

There are other possible health effects:
  • A rash can appear when the fibers become embedded in the outer layer of the skin. ...
  • Eyes may become red and irritated after exposure to fiberglass.
  • Soreness in the nose and throat can result when fibers are inhaled. ...
  • Temporary stomach irritation may occur if fibers are swallowed.

What is the longest lasting home insulation? â€ș

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. At the same time, cellulose, loose-fill, foamboard, loose fill and rock wool insulation can last up to 100 years.

How often should you replace blown insulation? â€ș

Blown-In Insulation (Fiberglass And Cellulose)

Because it is both efficient and economical, blown-in or loose-fill fiberglass is an insulation material that sees widespread use. In most homes, loose-fill insulation can survive anywhere from 80 to 100 years before needing replacement, provided that it is not damaged.

Do old houses have good insulation? â€ș

Most halls for vintage homes aren't built for extreme cold or intense levels of heat. This is primarily because the weather conditions back then aren't as high and as low as they are now. Many old houses have hollow walls that contain wood shavings in place of properly insulated materials.

When should insulation be replaced? â€ș

The typical lifespan is between 20 and 30 years, with degeneration starting as soon as 15 years following installation. The life expectancy may be shortened by harsh weather or intervention from the outside, just as it can with other forms of insulation. You often use cellulose as supplemental insulation.

How do you know if insulation is bad? â€ș

9 Signs Your Home Is Under Insulated
  1. High Heating and Cooling Bills. ...
  2. Uncomfortable Rooms. ...
  3. Ice Dams and Roof Leaks. ...
  4. Pest Problems. ...
  5. Room Stays Cold Despite the Heater Being On. ...
  6. Cold Floors and Walls. ...
  7. Freezing Pipes. ...
  8. Temperature Fluctuations.
Nov 15, 2023

Should you put new insulation over old? â€ș

Adding new insulation depends on a variety of factors. If your old insulation is damp or water-damaged, it needs to be removed and replaced. If the current insulation has always been dry, you can add fresh insulation on top of it.

Should you remove old insulation before new? â€ș

If the insulation is still in good condition, it may not need to be removed. However, if it's damaged, damp, or infested with pests, it should be removed before installing new insulation.

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