Thermal spray foam insulation is used in buildings, and refers to the application of thermal insulated materials, which are applied using various spraying methods, into a roof space or wall cavity to prevent heat loss. Thermal spray foam insulation is an important factor to achieving thermal comfort for the buildings occupants, and thermal spray foam insulation reduces unwanted heat loss, and reduces the energy requirements of cooling and heating systems. Thermal spray foam insulation simply refers to the insulating materials being used to slow heat loss. The effectiveness of foam insulation is usually evaluated by its R-value, but this does not take into account construction or local environment factors. Thermal spray foam insulation is easy to apply. Foam insulation is sprayed onto or into the underside of the roof within the attic/loft space, and dries to rigid foam. The application of this process is normally completed within two days. Thermal spray foam insulation does not particularly address ventilation or sound proofing issues.