Much ado has been made in recent years about the benefits of installing white or “cool” roofs. The idea: Light-colored materials reflect heat, while dark roofs, such as those made of asphalt and tar, absorb…

Much ado has been made in recent years about the benefits of installing white or “cool” roofs. The idea: Light-colored materials reflect heat, while dark roofs, such as those made of asphalt and tar, absorb…