Fiber Glass Insulation
Johns Manville fiber glass insulation offers trusted performance and proven energy savings. Whether you’re building a new structure or retrofitting an existing building, each of our insulation products is designed, tested and proven to provide maximum thermal and acoustical performance for the life of a building. We manufacture the only complete line of certified Formaldehyde-free™ fiber glass insulation, providing improved indoor air quality by reducing exposure to formaldehyde.
Faced batts and rolls are lightweight, naturally white thermal and acoustical fiber glass made of long, resilient glass fibers.
Johns Manville unfaced building insulation is a lightweight, naturally white thermal and acoustical fiber glass.
Johns Manville blow-in, loose-fill fiber glass insulation is designed for open attics and hard-to-reach locations like corners, nooks and crannies.
JM Spider Custom Insulation features variable thickness levels that 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.
Johns Manville Poly-Encapsulated insulation is wrapped in plastic for a more comfortable installation with less itch and dust.
Johns Manville Insulation Boards are a series of semi-rigid or rigid thermal and acoustical fiber glass insulating boards for custom curtain wall applications.