Ceiling insulation Auckland is a material that is installed on the ceiling of a building to decrease the amount of heat that escapes from the building. Ceiling insulation helps to regulate the temperature in a space, and can also help protect an interior wall from moisture damage. Underfloor insulation Auckland is a type of home insulation that is installed between the floor joists and the sub-flooring. It is made of rigid foam insulation that expands and contracts with changes in temperature, moisture, and air pressure. This type of insulation provides thermal protection for the floors and walls below as well as acoustic noise reduction.