Insulation in long rolls usually 15” or 23” wide for full-length placement between studs, joist or rafters, usually composed of mineral fiber (Glass wool).

large panels of insulation made especially for insulating concrete walls in basements and crawl spaces. Can also be used in large open areas such as floored attics.

Flexible insulation, such as fiberglass or mineral wool, that comes packaged in long single rolls.