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Spray Foam Insulation

The Big Questions: Is Spray Foam Flammable?

  

is spray foam flammable

Spray foam insulations are not a new product, but recent developments in the past 30 years have seen them develop exponentially to a point where over 50% of homes in the United States are now insulated with spray foam products such as Icynene.

With modern building regulations put in place many customers interested in our products are asking the question ‘is spray foam flammable?’. We aim to give an insight into 3 of the most common spray foam insulations and their flammability risks.

Polyurethane Is An Unacceptable Fire Hazard

Polyurethane foams will burn quickly once alight, and its highly combustible properties make it a dangerous accelerant. Insulations are meant to completely envelope your home, creating a secure and airtight thermal barrier so it is imperative that they adhere to strict building regulations set out by the UK goverment.

In an ideal world, homeowners would like their building envelope ( airtightness of their property) to be non-flammable as it surrounds them, their families and their possessions.

A lot of polyurethane foams on the market now claim to have fire retardants in but it has been proven that these do not necessarily prevent the foam from burning. It is important to check these facts before deciding on what spray foam insulation to use in your home.

Icynene Classic Plus “O” – Fire Retardant Spray Foam Insulation

The latest edition to the already impressive Icynene spray foam insulation range is Icynene Classic Plus “O”. It has achieved a best in spread of flame reaching class 1 ( the flammability test ranges from class 1 best to class 4 worst).

This flammability rating for Icynene spray foam has been achieved by coating the insulation with a specially developed intumescent coating.

The fire-resistant properties comply with building regulations, making it an ideal choice for any extension, renovation or new build which must get through council planning before work commences.

Because it complies with these building regulations, you can use the foam exposed in a number of residential, commercial, industrial and agricultural buildings without the extra cost and effort of additional fire retardant measures.

is spray foam flammable

Cellulose is a loose fill insulation (not spray foam) which is made of recycled paper which makes in surprising runner for a non-flammable insulation.  However, both fibreglass and cellulose both operate like a woollen sweater, where spray foam insulations such as Icynene work like a wind breaker

Cellulose Spray Foam Insulation Is Not Flammable

A multitude of American and Canadian studies have identified cellulose insulation as a fire-resistant material. Adding cellulose insulation to a timber framed wall or roof can increase the fire rating by 15 minutes.

Cellulose is a loose fill insulation (not spray foam) which is made of recycled paper which makes in surprising runner for a non-flammable insulation.  However, both fibreglass and cellulose both operate like a woollen sweater, where spray foam insulations such as Icynene work like a wind breaker.

This means both cellulose and fibreglass are more prone to air passing through the product, the more air that passes through a building the more prone they are to oxygen contributing towards the flame spread.

The products also act as perfect for pests as they can eat at the material causing it to lose its insular value, or use it as a nest.

Seeking a form of insulation that puts safety at the top of the agenda? Talk to our team of spray foam experts by calling 0800 1700 636, or, alternatively, by simply clicking the button below!