The following section provides a brief description of each different form of insulation, along with recommendations on which forms are best suited to various areas in your home. This form of insulation is produced in batts or blankets. Flexible insulation's are available with or without a facing material. Kraft paper and aluminum foil are two common facing materials. Kraft paper is treated to resist the flow of water vapor.
Aluminum foil facing serves both as a vapor retarder and a radiant barrier.
Facing materials typically include stapling flanges, allowing the blanket or batt to be stapled to wood framing members. Unfaced blankets and batts are also sold. Blankets and batts are most often used in new construction when access to wall, floor, and ceiling cavities is available. They have limited value in doing an insulation retrofit. However, blankets are often used in retrofits to add insulation above ceilings in accessible attic spaces.