HFOs: New Nature Friendly Blowing Agents

HFOs: New Nature Friendly Blowing Agents

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A greener future is around the corner in the construction field. Construction professionals who are environment-friendly now have a new ecological alternative with hydrofluoroolefins (HFOs). Those new products replace the hydrofluorocarbons (HFCs) which were accelerating global warming. Isolation Majeau presents to you this new agent that is found in the blown polyurethane HEATLOK Soya HFO from Huntsman Building Solutions (Demilec) which meet the Paris, Kyoto and Montreal protocols requirements. The HEATLOK HFO pro also has its own EPD (Environmental Product Declaration) which shows a much lower global warming potential (GWP) than other types of insulators. 

What is the Blowing Agents Purpose that are in Insulation Products?

Blowing agents are small gas bubbles inside the insulator. It’s with the help of those chemical products that the insulator will transform into foam. They also help slow down heat movement. Those are essential ingredients since they are the ones that bring the insulating properties to the foams. The blowing agents are found in rigid board and sprayed insulation such as the blown polyurethane from Huntsman Building Solutions (Demilec) in Boisbriand.

The Difference Between HFC and HFO

The HFO gases replace the HFC. They have the same functionalities, and have similar performances. The difference lies in the molecular level. Indeed, the HFO molecules contain at least one carbon-carbon link. Those molecules are then very reactive in the atmosphere, which reduces their life span, making their impact on global warming very low. In fact, their Global Warming Potential is less than 1, which is 99,9% lower than traditional blowing agents. 

 The Hydrofluoroolefins (HFO) Have Other Ecological Advantages

They are:

– Nontoxic

– Without danger to the ozone layer

– Non-flammable

– Not considered as Volatile Organic Compounds (VOCs)

– Low conductive

The HFOs Are Technically Superior: More Insulating, More Inflatable

First of all, an insulating panel made with HFO has a 10% to 15% better energetic performance than the one made with HFC. Two inches of  blown polyurethane HEATLOK Soya HFO has an average R-value of 6 per inch, according to the CAN/ULC S770-09 norm. 

With the help of hydrofluoroolefins, the spraying of polyurethane foam made with successive two-inch layers can reach eight inches in one day, according to the Huntsman Building Solutions (Demilec) procedure with their star product  HEATLOK Soya HFO.

The Other Non-Chemically Blown Insulators

Not all insulators use chemical blowing agents. For example, polystyrene is blown with a water base. It’s more ecological, but its R-value is lower.

The HFOs Future

Canada is ahead of the United States by forcing the blown polyurethane manufacturers to use new HFO blowing agents since January 1st  2021. According to Ecohabitation, the HFC should be banned in the United States in two or three years from now. 

The HEATLOK Soya HFO, a Greenguard Gold Certified Product

The blown polyurethane from Huntsman Building Solutions (Demilec) is Greenguard Gold certified. This means an ecological choice for you and your family because the GREENGUARD certification identifies the products and the materials found inside that emit the least amount of volatile organic compounds and particles in order to increase indoor air quality.

If you have any questions on the use of blowing agents, our experts will gladly help you.

This article was originally published on May 17, 2022 by Marcel Lapierre