Spray Foam For Anti-Condensation

About Spray Foam For Anti-Condensation

Spray Foam Insulation offers a robust method of reducing condensation.

Nexseal LE Closed Cell Insulation offers a perfect solution to reduce or eliminate condensation in commercial, agricultural and industrial buildings.

Fast Install

Spray Foam is a fast and effective alternative to traditional materials


Spray Foam is the only solution for Anti-Condensation


Spray Foam forms an exceptionally strong bond with concrete

Where To Use Anti-Condensation Spray Foam

Nexseal LE Closed Cell Spray Foam can be used in a multitude of environments. During autumn and winter months, many metal, asbestos or cement fibre roofs tend to condensate due to the external cooler temperature versus the warmer internal temperature. A 20-25mm layer of Nexseal LE is usually more than sufficient to eliminate condensation.


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We’re proud to work with a range of clients across many industry sectors.

How We Help You


Get in touch today to get the ball rolling


Let us specify the requirements for your project​


We’ll provide you with a budget price range


Use one of our ThermoFoam-approved installers


Once installed, we provide a 25-Year Product Warranty


Check out our Gallery where you will find some photographs of installations we’ve completed in the past. Whilst spray foam is insulation and not decoration, our experienced installation teams will always endeavour to provide a neat and tidy finish to the insulation. Nexseal LE closed cell is easier to achieve a neater finish whereas Sucraseal Open Cell expands at a faster rate to leave an undulated finish.


Why spray foam for corrugated surfaces?

Pre-manufactured insulation materials need fixing into place and generally won’t follow the undulation of the corrugate. This can leave cold pockets behind the insulation and unless the materials used are airtight, warm air from inside the building could still escape through the insulation and cause condensation pockets. The closed cell spray foam will bond to the corrugated surface and provide a seamless layer of thermal performance that will completely eliminate surface condensation.

Will my building need to be empty?

Yes, ideally. Firstly, we need as much floor space as possible to navigate a scaffold tower or cherry picker and secondly, there is often overspray particles that will fall from the roof during the spraying process and these particles can stick to machinery, stock and belongings inside. Whilst we will make every effort to cover items with protective sheeting, we cannot guarantee we won’t get overspray on items, therefore, where possible, its just best to empty the building. Due to health and safety regulations, we definitely can’t have the general public or employees in the building at the time unless they are in another zone.

Is spray foam fast to install?

Yes, typically it’s 4-5 times quicker than fitting pre-manufactured materials which can have a massive impact on how quickly you can use the building again. For businesses who rely on the space they are insulating, we can typically complete around 200-250m2 per day and for larger projects we can increase the number of installers on site to speed up the process. For most projects, we are generally in and out within a few days, leaving you fully insulated and your surface condensation issues resolved.

Which type of spray foam is best?

Our ThermoFoam Nexseal Closed Cell has been tested extensively with the BBA to ensure its suitability for bond strength, water vapour permeability and thermal conductivity. We’d always recommend using closed cell insulation to cement fibre, asbestos and metal surfaces due to its cohesive strength. Whilst some of our competitors may promote the use of open cell foam in these scenarios, it essentially has the density of a sponge, offers no structural stability and has a generally poor cohesion which could fail over time. Although we have our own ThermoFoam Sucraseal Open Cell Foam, we wouldn’t recommend its use direct to a corrugated surface

Will the spray foam stop leaks?

We don’t guarantee it against leaks. The negative pressure of the water from above will always find a way to penetrate through the smallest of crevices. The closed cell spray foam will, however, bond the roof sheets and any fixings which means if they are all in place before we spray, the foam will help to retain that structural stability. In high winds or stormy weather, the roof sheets are less susceptible to be damaged by wind and this should provide less tension on the fixings which means the roof will last for much longer as a result.

What Fire Rating Is Spray Foam?

Our Nexseal LE achieves a British Class 1 surface spread of flame which is generally accepted by property insurers. The fire risk of spray foam insulation is very low provided there are no ignition sources within 500mm.

Our Products

Check out our BBA Certified Spray Foams

Our range of open and closed cell spray foams are industry-leading, BBA-Certified, use recycled materials and contain water-based blowing agents.

Nexseal Closed Cell

This low exothermic, high-lift closed cell foam boasts a fast installation time, offers incredible thermal performance and improves the structural integrity of a building. Loved by installers for its fast rise, Nexseal is ozone-friendly and is pending BBA certification which is due in June 2022.

Sucraseal Open Cell

The leading open cell foam now available in the UK. Sucraseal combines peace of mind British Class 1 fire safety with exceptional thermal performance and is pending BBA Certification which is due in June 2022. Sucraseal is installed exclusively by ThermoFoam-approved contractors only.

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