The potential pitfalls of spray foam insulation

- Mon 15 Jul 2024

It is becoming increasingly more common when inspecting the roof void of properties for us to see spray foam insulation. Spray foam is a high performance product with excellent thermal qualities. There are two types of spray foam insulation – closed cell and open cell.

Closed cell foam is filled with a gas that enables the foam to expand and fill all the gaps and spaces around it. When cured it becomes rigid which makes the structure it has been applied to stronger. Closed cell has a much greater R-value which makes it more energy efficient.

Open cells foam isn’t as dense. The cells are filled with air, giving the insulation a more spongy texture. It does not add strength but it is a good insulator and air sealer.

As spray foam encases the roof timbers there is always the risk of condensation, rot and decay. This can cause you problems if you are looking to buy or sell a property as many Chartered Surveyors may request further specialist reports on the spray foam and condition of the roof structure, deem the property unmortgageable or impose a retention for the complete removal of the spray foam which could mean complete replacement of the roof coverings.

So, if you are considering having spray foam insulation it is always recommended further specialist advice is undertaken. Bradleys Surveyors are more than happy to discuss the pros and cons of spray foam insulation so feel free to get in contact.

https://bradleyssurveyors.co.uk/

The potential pitfalls of spray foam insulation

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