Johns Manville Spider Plus insulation is an excellent choice for several reasons in your Charlotte, NC home. ABS Insulating recommends JM Spider Plus for its interlocking fibers that are designed to fit into the smallest gaps and completely fill a cavity such as an open wall. JM Spider Plus is mold resistant, doesn’t contain formaldehyde, and leaves little mess behind. Your insulation can be installed and dried in one day. All in all, JM Spider Plus can save you money and keep your construction project on schedule.