Insulating your home’s attic is one of the most effective ways to reduce your energy costs. By sealing your home and adding adequate insulation, you can cut down on your energy bill by a substantial amount. So, if you’re looking to add or replace your home’s attic insulation, it’s essential to know the options available and which would be best for your needs. To help make the decision easier, we’ve put together a guide on the different types of attic insulation and their benefits. Keep reading to learn more.

To choose the ideal attic insulation for your home, you’ll need to consider its R-value. Let’s start with a quick definition.

What is the R-value?

The R-value measures an insulation material’s capacity to withstand heat flow. Higher R-values mean better insulation. In addition, factors like density and thickness can affect an insulation’s R-value.

Now that we know the R-value or resistance value, we can look at the different insulation materials and their benefits.


Fiberglass has a high R-value, making it an excellent choice for attic insulation. It’s also one of the most affordable options, making it a popular choice among homeowners. Fiberglass is made from sand and recycled glass, so it’s also an eco-friendly option. Due to its ready availability and high moisture resistance, fiberglass is often used in new home construction.

However, it’s essential to know that tiny glass fibers can cause skin and eye irritation. So, if you’re installing fiberglass insulation yourself, wear gloves, long-sleeved clothing, and eye protection. 

Mineral Wool

Mineral wool insulation is made from rock or slag obtained from smelting operations. It’s a safe and nontoxic option that doesn’t irritate the skin. This material is known for its fire-resistant properties, making it a good choice for homes in areas at risk of wildfires.

In addition, mineral wool is also moisture-resistant, so it won’t lose its insulating properties if it gets wet.

Soundproofing is another advantage of mineral wool insulation. This may be the best option for you if you live in a noisy area or have thin walls.

However, mineral wool is one of the more expensive insulation options. 


If you are conscious of the carbon footprint of the products you use in your home, then cellulose insulation is a good choice for you. Cellulose is made from recycled paper products. It’s also treated with fire retardant ammonium sulfate, making it more fire-resistant. 

In addition, cellulose is one of the most economical insulation materials available. However, it does require a lot of effort when installing it. Cellulose is also susceptible to moisture damage, so be sure to install a vapor barrier if you live in a humid climate.

Having looked at some of the materials used for attic insulation, let’s now look at the forms they come in.


Batts are pre-cut pieces of insulation that come in various widths. They’re usually made from fiberglass, but you can also find batts made from other materials, like mineral wool. The advantage of batts is that they’re easy to install. You simply fit them between the joists in your attic. However, one downside is that they can be tricky to fit around obstacles like wiring and pipes.


Rolls Insulation comprises long strips of material that you unroll and fit between the joists in your attic. They’re available in various widths and lengths, enabling you to find the perfect size for your needs.


Blown insulation is made from fiberglass, cellulose, or another material. It’s installed using a machine that blows the insulation into your attic. This option is more versatile than batts and rolls, as you can use it to insulate around obstacles. It’s also less likely to leave gaps in the insulation.

Spray Foam Insulation 

Spray foam insulation, as the name suggests, is a foam that is sprayed on the desired area. This insulation is made from a mixture of two liquids that expand and harden when they come in contact.

Spray foam creates a tight seal that prevents heat loss by filling in all the nooks and crannies. 

This insulation is available in two forms, closed-cell and open-cell. Closed-cell spray foam has a higher R-value and is more effective at preventing heat loss. However, it’s also more expensive.

Open-cell spray foam is less dense and has a lower R-value. It’s less effective at preventing heat loss but is more affordable.

However, spray foam insulation is one of the more expensive options and can be tricky to install. It’s also not eco-friendly since it’s made from petroleum products. 

There are different insulation materials available, each with its advantages and disadvantages. Fiberglass is popular due to its affordability and high R-value, while cellulose is a good choice for those conscious of its carbon footprint. Mineral wool is a good choice for fire resistance and soundproofing, but it is more expensive. Spray foam insulation is effective at preventing heat loss, but it is pricey and not eco-friendly. When choosing an insulation material, consider your needs and budget.

By Manali