Denver, Colorado – Johns Manville has added a new spray polyurethane foam to its range of building insulation products. JM Corbond IV is a closed-cell SPF.
The fourth-generation product uses an HFO blowing agent, allowing it to meet increasingly stringent regulations prohibiting the use of materials with a high global warming potential. The new SPF was designed to offer similar performance to its older JM Corbond III product.
‘JM Corbond IV not only has a lower GWP than JM Corbond III, but also performs competitively in terms of R-value, spray yield and cooling requirements when you compare it to the previous generation,’ said Yusheng Zhao, senior research chemist at Johns Manville. ‘The main difference between the two products is in the new HFO blowing agent.’
The product is already available for shipping within the US and, the company said, will soon be available in Canada, too. The older Corbond III product is currently still available in the US, except in California, New York, New Jersey, Vermont and Washington.