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How Long Does Insulation Last: Lifespan, Effectiveness, and When to Replace

January 17th, 2023 BY First American Roofing

Brrrrr! 🥶

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 installation, you are not alone.

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

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.

how long does insulation last placing insulation

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.

What Types of Insulation Are There?

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 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

how long does insulation last foam board

Foam board insulation is a popular material choice for basements 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 basements 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.