JM Spider® Custom Insulation System
Johns Manville Spider® Custom Insulation comes in variable thickness levels can fill 2x4 cavities up to an R-15 thermal rating, 2x6 cavities up to R-23, and six-inch steel stud cavities up to R-25. JM Spider® insulation also reduces sound transmission, achieving a Sound Transmission Class of 43 in a standard 2x4 wood-framed wall. JM Spider® insulation resists mold because it sprays in almost dry (less moisture content than wood framing), and is treated with a U.S. EPA-registered mold inhibitor to protect the insulation against mold. JM Spider® insulation can be used for both wall and ceiling applications. In addition, only fiber glass insulation made without formaldehyde—such as JM Spider® Custom Insulation—can pass Environmental Specification 1350, the toughest indoor air quality test in North America, with a non-detect for formaldehyde.
JM Spider® is CCMC (Canadian Construction Materials Centre) approved to meet National Building Code 2005 in wood-frame construction and to deliver 4.1 RSI in 140 mm cavities. To read more on this Canadian listing, please reference the CCMC Report in the document list below.
Product Literature
Technical Resources
