Spray foam insulation cost

Spray Foam Insulation Cost | The Complete Price Guide (2019)

So let’s get right to it. How much does spray foam insulation cost to install? - Truth is: Spray foam insulation costs more than traditional insulation methods on the market such as Fiberglass. Spray foam is not the cheapest insulation solution, but it's the most superior form of insulation on the market today.

Let's be honest, it's pretty much impossible to give a flat price online without an experienced surveyor visiting your property to provide you with a FREE personalised no obligation quotation.

This is because the spray insulation cost varies significantly from job-to-job depending on various factors.

However, this guide will teach you everything you need to know about the factors that determine the spray foam insulation uk cost.

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To calculate how much spray foam insulation cost per square metre depends on 4 main factors: the thickness, the size of the area you want to insulate, how it’s installed and the type of spray foam insulation.

The first three factors are variables that fluctuate from property to property, However, the type of spray foam insulation used is generally fixed.

Remember: There are two main types of spray foam insulation - Open cell and Closed cell. 

Open Cell -

Generally speaking, when it comes to insulating a home - whether that's loft insulation (Roof insulation), wall insulation, or floor insulation - it is ideal to use Icynene open cell spray foam.

This is due to the structural properties of open cell spray foam, which enables the foam to encapsulate air and expand.

This, therefore, makes this type of spray foam insulation the perfect option for homes as it is breathable, preventing the timbers from rotting.

Spray foam insulation acts as an air barrier, therefore ensuring that there is no heat loss or air leaking into the property.

Closed Cell -

Icynene closed cell is more suitable for projects that have a metal frame structure, such as a shipping container, boat and other similar constructions.

This is a result of Icynene closed cell having a rigid and dense structure, due to the foam minimising the air that is encased in its bubbles.
This is ideal for preventing air and water leakage, however not so much for timbers.

Hence, closed cell spray foam predominately being used on metal framed structures rather than homes.

Icynene closed cell spray foam was applied to the Boxpark Croydon project in Summer 2016.



To find out more about which type of spray foam insulation is the right fit for you click here.

Spray Foam Insulation Cost: Spray foam vs Traditional Insulation 

spray foam insulation cost: spray foam vs traditional insulation

It's essential for you to understand the key differences between spray foam and traditional insulations:

1) No Air Leakage 

When laying traditional forms of insulation gaps are often formed.

When there's is a gap between Fiberglass insulation or if the Fiberglass insulation is compressed, the U-value decreases.


with spray foam, there are no air leaks because the foam forms an air barrier between the inside and outside environments.

There are no gaps or compression because the spray foam fills all cracks and voids in the wall.

2) No Air Pollutants -

Fiberglass insulation deteriorates and falls down over time. When this happens it gets broken down into plastic covered GLASS particles that become airborne in the living space of the home.

Convectional loops form in the walls when using Fiberglass insulation. This inevitably leads to mould and mildew forming in the walls of your home.


Spray foam insulation is non-toxic during and after installation. There are no CFC’s, HCFC’s or other ozone-depleting materials in the foam insulation we use.

Foam insulation actually makes your home healthier by reducing the amount of dust, pollen and allergens in the air.

Many customers decide on spray foam insulation just for the air quality advantages of foam. Foam is extremely helpful to asthma and allergy sufferers.

3) Noise Barrier -

Spray foam insulation can act as a noise barrier minimising sounds from outside and inside the structure.

Other traditional insulation methods do not reduce excess noise at all.

4) Prevent the Cost of Replacement -

Over time Fiberglass insulation deteriorates.

This may cause your utility bills to rise and due to an inadequate amount of it, lose its effectiveness and therefore needs replacement.


With our market-leading Icynene spray foam insulation, you never have to worry about a replacement as it doesn’t degrade over time as there is no change in the insulation’s properties or performance over the life of the property.

To learn more about the differences between spray foam insulation and other traditional insulation methods click here

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Spray Foam Insulation Cost: Return On Investment 

There's a saying: "you get what you pay for" - and this is the case when considering which insulation is best for your property.

While thinking about the cost of anything, you also have to think about the return.

Icynene spray foam insulation instantly increases the sale value of your home.

Energy efficient homes are valued at around £10,000 more than those that are deemed non-energy efficient.

The latest research also shows that over 70% of buyers consider energy efficiency as the main buying point.

But that's not all...

Spray foam can help you save anywhere up to 50% on monthly energy costs.

It pays for itself averagely in as little as 1-3 years - Which therefore means everything after is just pure savings!

Finance option

Make your plans a reality - The finance option we offer is 0% APR up to 24 months, which means that you don't pay any extra payments over the instalments then you would if you were to pay in full.

Get the spending power you need with our great 0% interest-free finance option, when you're looking to have Icynene Spray Foam insulation installed.

We also offer a wide variety of other finance options tailored to your needs.

See Finance Options

Spray Foam Insulation Survey
The bottom line

Ultimately, the spray foam insulation cost will be predominately influenced by the type of spray foam insulation you need, the thickness and area that you want to insulate.

Spray foam insulation cost may be a more expensive option in the beginning, but in as little as 1-3 years you will have made the money back by the amount you save in your energy bills.

Spray foam insulation is higher quality and longer lasting solution than any other form of insulation which results in increased comfort for you and family, and higher energy rating for your home, in turn increasing its market value.

At Evergreen Power it's our mission to make your house more energy efficient. That's why we provide our customer with Icynene Spray Foam Insulation, the most efficient and modern insulation method available on the market today.

For a Free Quote, Advice or simply More Information. Call 0800 689 1894 or click here.


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1 Comment

  • Tom O

    Great blog. Very Insightful.

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