Johns Manville’s Spider® Plus is cavity spray fiberglass insulation. It is engineered to completely fill cavities such as open walls prior to installing drywall. It’s different from dense-packed fiberglass because of its adhesive-free fibers.
JM Spider® Plus is manufactured with interlocking fibers. When installed, these fibers spring and lock into open cavities without adhesive or installing behind netting. This technology allows JM Spider Plus to fill gaps and voids fully with quick drying times so your project can continue moving ahead on schedule.