Johns Manville (JM), a Berkshire Hathaway company and global building products manufacturer, has introduced JM ocSPF insulation, a low-density polyurethane open-cell spray foam insulation designed for commercial and residential applications. Recommended for walls, floors, unvented and vented attics and ceilings, JM ocSPF insulation will insulate cavities of any shape, creating a “seamless” protective air barrier that minimises or eliminates air leakage for maximum building envelope performance.

JM ocSPF insulation is mould and mildew resistant, minimises sound transmission and provides an R-value of 3.8 at one inch, R-13 at 3.5 inches and R-19 at 5.5 inches. It is considered an air impermeable insulation at a thickness of 3.5 inches. JM ocSPF insulation can be applied at up to 6 inches per pass and, when properly installed, the product expands 120 times its initial volume, sealing all voids, gaps and crevices. Unlike many other open-cell products on the market, JM ocSPF insulation is formulated with 100 per cent reactive catalysts to minimise emissions during spraying, resulting in lower jobsite odor and improved safety for installers.
 
JM IB Coating

In addition, JM is introducing JM IB Coating, an intumescent ignition barrier coating recommended for use over JM ocSPF insulation in unvented attic and crawl space applications. JM IB Coating is an effective ignition barrier over JM ocSPF insulation at a minimum application rate of 0.6 gallons per 100 sq ft.

“Now, JM customers can order both fibre glass insulation and closed- and open-cell foam efficiently from one manufacturer, and with the reassurance that they are receiving quality products from Johns Manville,” said Mike Lawrence, vice president and general manager for JM’s Insulation Systems business.