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How does spray foam insulation prevent mould growth?


Moisture and mould are a property owner’s nightmare and can cause all sorts of structural as well as health problems. Thankfully, spray foam insulation is built to prevent moisture from infiltrating your property and, by extension, the development of mould. 

What causes mould?

Mould requires three things to grow effectively: moisture, warmth and a food source. When warm, humid air comes into contact with a cool surface, it condenses, causing a build-up of moisture which means the possibility of mould growth.

Closed cell spray foam insulation is airtight

When installed correctly, closed cell spray foam insulation creates an airtight barrier that prevents air leakage. Air leakage is when cold air from the outside mixes with warmer air from within your property, resulting in condensation and moisture-related issues within cavity walls.

Spray foam insulation is the only insulation option available that expands to fill any space, creating a totally airtight seal in every hole and crevice and therefore minimising the risk of air leakage.

However, closed cell spray foam insulation is so good at preventing air from escaping, that good ventilation is necessary in your attic space in order to prevent condensation.

Spray foam insulation is not a food source for mould

Polyurethane spray foam insulation is not a hospitable environment for mould as it has no nutritional value. Furthermore, spray foam insulation does not decay when exposed to moisture in any way, unlike wood and metal, making is a long-lasting and durable choice for your home or commercial property insulation.

We are a team of spray foam insulation experts, providing our services across London, the Midlands and the South. If you want to find out more about the unique properties of spray foam insulation and how it can prevent mould in your property, don’t hesitate to contact us on 0800 690 6338.