Soundproofing Spray Foam: The Definitive Guide

Written by Daniel

Soundproofing Spray Foam is a unique product that has been gaining in popularity in recent years. It is a spray that can be used to soundproof an entire room or just specific areas of the room. It is made up of special materials that help to absorb and block sound waves. In this article, we will discuss the science of how Soundproofing Spray Foam works, as well as where it can be best used. We will also talk about how you can install it, and its pros and cons.

What is Soundproofing Spray Foam?

In recent years, soundproofing spray foam insulation has taken the insulation world by storm. Icynene Spray Foam is a BBA-approved insulating material that provides a better U value than traditional insulation materials. Icynene spray foam is a type of insulation that provides many benefits to those who install it in their homes or businesses. One of the great advantages of spray foam insulation is that it significantly muffles exterior noise. This enables you to spend more quality time with your family in peace and quiet.

2 Types of Soundproofing Spray Foam

Key characteristics of closed-cell and open-cell spray foams:

Closed Cell

Closed-cell spray foam is a type of polyurethane that expands up to 35-50 times its original volume. With closed-cell spray foam, approximately 90% of the cells are sealed shut which makes the foam impervious to outside elements like moisture, vapour, rodents, etc. This makes it an excellent choice for commercial warehouses and boats as it does not allow moisture to seep in and damage surfaces made of wood or timber.

Open Cell

Open-celled spray foam expands to 100 times its size once applied on the surface. The mixture, which is delivered via water, creates an interconnected series of air cells upon contact that Trap airflow and serve as a thermal barrier. This type of insulation is semipermeable to moisture and vapour in contrast to closed-cell spray foam; however because it allows for moisture movement, it’s ideal for use on wooden or timber surfaces. Homeowners typically use this type of insulation.

The Best Places to Use Soundproofing Spray Foam

Sealing Wall Cracks And Crevices

By filling in your walls’ gaps and crevices with spray foam, you will significantly reduce the amount of noise that passes through. In addition to the spray foam, adding soundproofing materials like paint, acoustic panels, or wallpaper will create an even more peaceful environment. By combining acoustic foam panels with interior room noise, you will be able to block out sound. This way, you can create a more tranquil environment for sleeping, reading, studying or conversing.

Apply Spray Foam Between Drywall

If you’re looking to reduce exterior noise vibration and lower sound wave levels in your home, one method is to use sound-deadening spray foam between the drywall. Open-cell foam spray is also excellent for filling and sealing cracks that outside noise can enter through. However, some may find using spray foam messy and time-consuming.

Use Foam Spray Around Acoustic Panels

When you’re working with acoustic spray foam panels, it’s best practice to spray the edges of each panel. If you’re trying to cover a large wall surface area, spraying around the entire set of panels will be most effective. Sealing up any tiny cracks, gaps, or crevices will help reduce the amount of sound that gets transferred from outside. You can close these openings with spray foam insulation before attaching the acoustic panels, but you’ll need to let the spray foam dry first. The sound-reducing spray foam is effective because it can be used in conjunction with soundproofing paint to achieve desired results.

Pros and Cons


Easier to Install

The beauty of spray foam lies in its convenience- you can easily apply it to any surface in your home without having to dismantle anything beforehand. Just point, shoot, and watch as the soundproofing properties go to work!

Great Soundproofing

The advantages of soundproofing your home are crystal clear. Not only does it provide optimum privacy by ensuring that nosy neighbours and strangers can’t overhear delicate conversations or sensitive information, but it also allows you to fully enjoy your hobbies without being disturbed by outside noise pollution. Soundproofing spray foam insulation is one excellent way to achieve these benefits in your home.

Lower Energy Bills

Not only does spray foam insulation provide soundproofing benefits, but it also creates an impenetrable barrier against pests and drafts. By expanding to fill in cracks and gaps, this material effectively keeps out critters that might try to sneak into your home. In addition, you can enjoy improved temperature regulation inside your house throughout the year. By using this method, you will be able to reduce the amount of air conditioning and heating that you use, which will help lower your energy bills. Additionally, because heat is not escaping from your home as easily, your AC unit and heater won’t have to work as hard, furthering their efficiency and lowering your monthly expenses.

Health & Qualify of Life

Not only is soundproofing spray foam insulation 100% water-blown and eco-friendly for your family, but it also eliminates respiratory distress by minimizing airborne pollutants in your home. Furthermore, roof insulation helps improve the overall quality of life and health.


Unfortunately, spray foam insulation is much more expensive than fibreglass. In fact, it is often three times the price of fibreglass. Additionally, unless you are only doing a small job, it is not advisable to apply spray foam insulation by yourself.

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