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Spray Foam Vs. Injection Foam: Which Is the Right Insulation for You?

Whether you’re having your home built from the ground up or you’re having a renovation done, you might hear from the builders that you need to get new insulation. You might already be familiar with the terms spray foam and injection foam but do you know what they mean? Do you know their differences?

Most homeowners do not. That’s fine. That’s what we are here for. In this post, your reliable residential insulation company in Saskatoon is sharing the similarities and differences between spray foam and injection foam insulation: 

What Is Spray Foam Insulation?

This type of foam insulation is an insulation that you spray into place. It is made up of two parts: a liquid and a gas. When the two parts come together, they will expand and form a foam that you can use as insulation material within your walls or attic. The foam will last for many years and is resistant to water as well as mold.

The downside to spray foam insulation is that it can be tricky to install. If you have gaps in the insulation then you will have air infiltration and reduce the efficiency of your insulation. It might be a good idea to hire a professional for the installation for this reason.

Pros and Cons of Spray Foam Insulation

Pro: Spray foam insulation can be installed in many different ways. It can be installed on the exterior of the home or within the interior. It can be sprayed into a wall or attic and it can be sprayed into place by a professional. The foam will expand and fill in any gaps within the home.

Pro: Spray foam can be used in a variety of applications. You can spray it directly into your walls, your attic, or any other void in your home. It will fill in these areas and ensure that your home is properly insulated. Pro: Spray foam will last for a long time. It will resist water, it will resist mold and it will resist the harshest weather conditions. It can stand the test of time and remain an efficient insulator for many years.

Con: Spray foam insulation can be difficult to install. You will want to make sure that you are allowing the foam to dry between being sprayed. If you don’t allow the foam to settle, then it will still be liquid and will not be effective. It is a good idea to let the foam dry before spraying again.

Con: Spray foam can be difficult to work with. It can be a little messy and if you don’t allow it to dry, then you will end up with a sticky area. You may need to wait a few days for the foam to dry.

What Is Injection Foam Insulation?

Injection foam insulation is similar to spray foam insulation. However, instead of spray foam coming out of a nozzle and applying to the walls or attic, the insulation is injected. It will expand to fill the spaces.

Injection foam insulation is usually applied in the same way that spray foam insulation is applied. The big difference is that injection foam insulation will fill all of the gaps and leave no air infiltration.

Pros and Cons of Injection Foam Insulation:

Pro: Injection foam insulation is easy to install. You do not need to worry about drying or waiting to spray the foam. The insulation will be injected into place and it will fill in any gaps that may be present.

Pro: The insulation will not be affected by gaps in the foam. This makes it easier to install. If you have had a problem with spray foam but you want to still use foam insulation, then injection foam may be a good fit for you.

Con: Injection foam insulation can be extremely messy. The insulation is designed to expand and fill the gaps in your home. If they are soft, then they will not work effectively.


The two types of foam insulation are very similar. The biggest differences between the two are how they are installed as well as how they expand. The good news is that your trusted Saskatoon insulation contractors can help you choose the better option for your needs. 

PolarTech Spray Foam is among the most reliable Saskatoon insulation contractors that you can trust to do a proper and thorough job for your project. Get in touch with us to learn more about our services!

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