Is Spray Polyurethane Foam Environmentally Friendly?
Polyurethane foam has a bad reputation with environmental safety. It can take up to 500 years for a polyurethane foam layer to decompose. Plus, it has been linked to hormone disruption and air pollution. Many believe that spray polyurethane foam roofing (SPF) is made from the same material that can cause hormone disruption and air pollution. Will it cause danger to the environment in the future? Let’s learn more.
What is Spray Polyurethane Foam?
Spray polyurethane foam, or SPF, is a type of insulation that consists of two components, isocyanate and polyol resin. When the two substances are mixed and sprayed onto surfaces such as walls, roofs, and other surfaces, the foam expands and fills in any gaps.
It is a highly effective insulation because it can resist water and moisture, which helps it last up to five times longer than other types of insulation. This type of insulation also has a low cost to manufacture and maintain, making it great for homeowners looking to save on their utility bills.
What is Spray Polyurethane Foam’s Potential Danger to the Environment?
As a sealant, SPF is not a danger to the environment. If the foam is exposed to the outside environment, it will degrade and break down in a short period. Thankfully, closed-cell foam is the most-used SPF that doesn’t break down and crumble like open-cell foam.
What are Closed-Cell Spray Polyurethane Foams?
Closed-cell SPF are typically used as a sealant for roofs, caps and other surfaces where traditional sealants may not be strong enough. The primary difference between open-cell and closed-cell spray polyurethane foam is that the closed-cell variety contains a higher density (and therefore less space) of small air bubbles.
Are Closed-Cell Foams Better For The Environment?
Yes. Closed-cell foams have a much smaller carbon footprint than traditional open-cell foams. Closed-cell foams are made from petrochemicals and are typically less than 1% of the total material by weight. This makes closed-cell foams the most environmentally friendly option.
Open-cell foams are made from natural materials like soy, cotton, and wool grown, harvested, spun, and processed. These materials are not renewable and have a much larger carbon footprint.
What are The Benefits of Closed-Cell Spray Polyurethane Foams?
Here are the benefits of closed-cell SPF.
Thermal and Sound Insulation
Closed-cell polyurethane foam has the property of excellent insulation. The closed cells allow air to circulate and absorb sound and help keep heat and sound vibration molecule movement to a minimum.
This SPF type contains closed cells that are more resistant to water absorption than open-cell polyurethane foam. Closed-cell polyurethane foam also has a higher density than open-cell polyurethane foam, which helps it maintain its shape and resist moisture better.
Exceptional Impact Resistance
Closed-cell polyurethane foam is a closed-cell foam, which means that the cells that make up the material are closed, meaning there is little to no air inside them. This helps create a strong, stiff material that can withstand more impact.
If you need excellent SPF roofing, insulation, or cladding applications, you can always count on us at Ener-Spray to provide you with professional applications. Contact us today to learn more.