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Energy conservation has become a policy objective throughout the world to protect the environment and conserve natural resources, energy use in buildings for heating and cooling is considered a major source of energy consumption in many volatile and developing countries. Environmental impact and what energy costs are on hillside living and comfort Today our drivers of green buildings have become friends of paramount importance to commercial institutional and residential building owners. Thermal insulation is an important but largely neglected factor in achieving thermal comfort in buildings, and insulation can reduce unwanted and costly heat gain or loss and reduce the energy demand of cooling and heating systems[1]. An energy-efficient and environmental property. Legal regulations and increasing public awareness have led to the need to reduce energy demand and associated costs. An important factor in the struggle against excessive energy consumption in residential buildings and public utility facilities is suitable insulation material to work in specific conditions. It is possible to reduce energy consumption through effective thermal insulation of all building partitions, but this would be virtually impossible without the right materials[3]. Different types of insulating materials in use today include rigid polyurethane. From polyurethane spray to glass wool to expanded and extruded polystyrene rock wool Additional thermal insulation can include designs and techniques to address the main modes of heat transfer, conduction radiation, convection, and evaporation condensation[2].