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Every material has fundamental material properties that determine their energy performance like conductivity, resistance, and thermal mass. Knowing these terms will help you chose the right materials to improve heat flows.
Thermal insulation is a material that blocks or slows the flow of heat through the building envelope. Insulation is vital to most green building design because it allows spaces to retain what heat they have, while avoid gaining excess heat from outside. Learn how to measure insulation and about different types of insulation.