Roof foam insulation is used in buildings, and refers to the application of thermal insulated materials, which are applied using various methods, into a roof space, to prevent heat loss. Roof foam insulation is an important factor to achieving thermal comfort for the buildings occupants, and roofing insulation reduces unwanted heat loss, and reduces the energy requirements of cooling and heating systems. Roof foam insulation does not particularly address ventilation or sound proofing issues. Roofing insulation simply refers to the insulating materials being used to slow heat loss. The effectiveness of roof foam insulation is usually evaluated by its R-value, but this does not take into account construction or local environment factors. Roof foam insulation is easy to apply. Roof 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.