Open Cell Foam Insulation

The perfect spray foam insulation product for all homeowners.

What is Open cell Foam Insulation?

Open cell foam insulation is one of two types of foam insulation, the other being closed cell foam insulation. Open cell is the go-to and preferred type of foam insulation for homeowners. It perfectly insulates residential homes, with its expansive capabilities, expanding up to 100x in size, it can cover the entire area in need of insulation. This form of insulation is also cheaper than its counterpart due to its expansive capabilities. Open cell foam insulation is best used for preventing mould growth, soundproofing, thermal efficiency and lots more.

Open cell Foam

Open-Cell Insulation Properties



Expands up to 100x from its sprayed application, easily insulating all areas of your property.



Cheaper form of foam insulation compared to closed cell and it's highly effective.



Open cell foam has superior soundproofing properties to reduce noise pollution.


Energy Efficient

Has great thermal properties, keeping in heat throughout winter and cooling in summer.


Prevent Mould

Open cell composition allow for breathable insulation, preventing mould growth.


Air Impermeable

Reinforces soundproofing ability by being air impermeable, very effective for homes.



Contains no harmful gases, an odourless spray foam application for great results.



Reduce your carbon footprint with this 100% water-blown spray foam open cell insulation.

Open cell Foam

Open Cell Foam Areas of Application

Open Cell Insulation is a specific form of insulating foam that can be applied under a variety of circumstances. Our industry experts recommend using an array of insulating materials on your property for optimum effect. Structures that may benefit mostly from Open Cell insulation are residential properties or any property that requires soundproofing, such as:

• Above Grade Exterior Walls

• Roof Lines

• Attic Floors

Comparing Open Cell Foam and Closed Cell Foam Insulation

It is important to understand the different types of spray foam insulation to know how to use them properly and where to best apply your foam insulant. The two variations are open cell foam and closed cell foam insulation. These product variations differ on a myriad of levels, such as: structure, application, density, composition and their R-Value.

Although, both forms of spray foam insulation can be used for buildings and residential properties and they both offer high performance insulation and great energy efficiency. But, it is important to note the application differences and why each variation of foam insulation is better suited for particular areas or outcomes (ie. if you want to achieve soundproofing).

  • Highly expansive form of foam insulation.
  • Open cell composition for acoustic insulation.
  • Prevents the growth of mould.
  • Air impermeable properties, ideal for soundproofing.
  • Lower R-Value than its counterpart, closed cell foam.
  • More cost effective and easier application.
  • Sustainable insulation, highly energy efficient.
where to get closed cell insulation supplier

Where To Get The Best Closed Cell Foam Insulation Services

Investing in insulation for your home or commercial property is a wise and important decision. At Eco Spray-Foam Systems, we help people make the correct decisions by providing expert advice from over 2 decades of accumulated insulation knowledge, experience and expertise.

If you want to enquire about spray foam insulation, home insulation or commercial insulation, especially with the use of open cell foam, then we can provide you with the help you need. We are an Icynene-accredited insulation provider, trusted by many companies and certified by many insulation boards, such as the NIA (National Insulation Association) and CIGA (Cavity Insulation Guarantee Agency).

We have carried out quality work across England, helping customers get their desired outcome with open cell foam insulation, whether that may be soundproofing their property, adding effective insulation for thermal resistance, lowering energy bills or becoming more eco-friendly. You can visit Checkatrade to see our reviews from our customers across the country.

To find out more information about our spray foam service, you can call us directly on 0203 411 5188 or head on over to our contact form here and drop us an email. Our friendly team of experts and insulation innovators are ready to provide you with assistance, advice and guidance on the best insulation solutions for your home or commercial property.


  • Is open cell foam an air barrier?

  • Yes. Although open cell foam insulation is commonly used in residential home insulation, due to its air-sealing properties and its ability to act as an air-barrier, it can excellently perform interior insulation in commercial properties in addition to providing effective insulation in homes.

  • Is open cell foam waterproof?

  • Although open-cell foam can absorb water, more so than its closed-cell counterpart, its material composition makes is ideal as it does not and will not act as a food source for mould. Therefore, if the insulant gets wet there will be no mould growth. Additionally, upon drying, the open cell product can return to its original state without distortion, completely reviving its full effectiveness.

  • Is open cell foam toxic?

  • No. Our company endorses Icynene spray foam insulation, which is not toxic and safe to use in properties. Icynene standards of health and protection are high and their spray foam product reflects just that. Open cell foam is 100% water blown, consisting of water and isocyanates, which is certified as environmentally friendly. When opting for spray foam insulation, we recommend using Icynene approved or Icynene accredited installers to make sure you get the best out of your insulation.

  • Is open cell foam a good sound barrier?

  • Yes. Due to its light composition, especially in comparison to closed-cell foam, open cell spray foam insulation is structured and composed for benefits in soundproofing properties. Because of the expansive nature of the foam, expanding up to 100x its size from liquid state, the insulation can cover all nooks and crannies of the desired insulation area. The open-cell foam properties provide an effective air barrier, which translates into block sound and reducing noise pollutions. Therefore, foam insulation can cover the entire insulation area, has light open-cell properties and its air impermeable features can block and reduce sound.

  • When should you use open cell foam insulation?

  • Open cell foam is commonly used in residential home insulation, this is due to: lower costs, open cell foam typically requires one layer of application because of how expansive it is. Energy efficiency, open cell spray foam has a good thermal resistance level and can help save money on energy bills every month. Eco-friendly, it helps homes become more sustainable with energy conservation, adding value to the property. Soundproofing, the acoustic insulation properties of open cell foam make it a good insulate for soundproofing interior walls, this is also applicable in commercial properties.

Advantages Of Spray Foam Insulation

First and foremost, using spray foam insulation, whether that may be open cell or closed cell foam, has many advantages over traditional forms of insulation. This insulation type is one of the most innovative available on the market today, it can quickly and effectively insulate homes and it is one of the most eco-friendly and environmentally sustainable insulations available. The foam itself will also provide highly effective insulation results on your home or commercial property. Its simple application and ability to meet project outcomes makes spray foam a strong candidate and a go-to when choosing what insulation to use.

Advantages of Spray Foam
Why do you need open cell insulation

The Essentials Of Spray Foam Insulation

Some essentials to bear in mind with open cell spray foam insulation are: it is a light and more expansive form of foam insulation, it is easily applied to the area of insulation, covering all nooks and crannies. The open cell composition makes it effective at creating an air barrier, providing sound proofing properties.

Additionally, the nature of spray foam insulation is eco-friendly, sustainable and the material is even composed of recycled materials. As a leading in UK insulation, it is our responsibility to provide greener alternatives to traditional and damaging means of insulation that are currently and commonly used. You can see more about our corporate responsibility here.

Spray Foam: Closed Cell Foam Or Open Cell Foam?

When deciding whether to use open cell foam insulation or closed cell foam insulation, there are a few factors that can help you make this decision.

It is important to decide on your overall goal of this insulation, do you want better thermal resistance properties or are you looking for acoustic insulation? Are you looking for a quicker and cheaper method of insulation installation or are you happy to invest more into your project? Do you need your insulation to be air impermeable or vapour impermeable?

The above are just a few questions to ask yourself that can help you decide on the best course of insulation for your property. You can contact us today for your free consultation and expert advice in helping you make the right insulation decision.

Accredited Icynene Spray Foam Installers

Icynene spray foam insulation is one of the latest and most technologically advanced products available today. We were one of the earliest adopters of this insulating technology and have been officially accredited as Icynene installers since adopting the product in 2012. We want to make sure that our customers are satisfied with each project carried out, which is why we want to be able to offer the highest quality products. Eco Spray-Foam Systems is able to insulate residential properties of all sizes, with the flexibility of our products and the wide array of services we have, we are able to provide a bespoke insulation service.

Open Cell

Open Cell Vs Closed Cell Foam Insulation

Before we dive into the pros and cons of open cell vs closed cell insulation, it is important to note that they are both superior..