Insulative refers to the property of a material that resists the transfer of heat or electricity. Insulative materials are commonly used in construction and manufacturing to improve energy efficiency and safety. For example, materials like fiberglass, foam, and rubber are known for their excellent insulative properties, helping to keep buildings warm in winter and cool in summer. In electrical applications, insulative materials prevent the flow of electric current, protecting both people and equipment. Common insulators include plastic, ceramic, and glass. These materials are essential in the design of electrical devices, ensuring that electricity flows only where it is intended and reducing the risk of short circuits or electrical shocks.