In addition to its use in attics, Mountain Fibers Attic Loose-Fill Cellulose Insulation can also be applied in exterior walls, especially in older homes. When used with a plastic liner, it can be installed in walls without the need for wetspray equipment. This technique is especially beneficial for insulating ceilings as well, making it a flexible choice for various home improvement projects. Whether retrofitting an existing structure or building new, this insulation offers reliable performance and ease of installation.