Roof insulation is a material used to reduce heat transfer between the interior of a building and the outside environment. It helps keep homes warm in winter and cool in summer, improving energy efficiency and comfort. Common types of insulation include fiberglass, foam boards, and spray foam. Proper installation of roof insulation can also help prevent issues like condensation and mold growth. By creating a barrier against temperature fluctuations, it contributes to lower energy bills and a more sustainable living space. Regular maintenance ensures that the insulation remains effective over time.