host posted on September 12, 2013 20:35
Johns Manville (JM), a Berkshire Hathaway company and leading building products manufacturer, recently announced that JM Corbond III closed-cell spray polyurethane foam insulation now delivers an R-value of R-7 per inch, a change that translates to a nine percent increase in thermal resistance compared to the previous R-6.4 per inch
[Read More...]