JM Spider® Custom Insulation is a professionally installed spray-in fiber glass insulation system. It fills framing cavities completely, leaving no gaps or voids. Locate a contractor here.
JM 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.
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 resources section below.