Homonym: Underlay (Bedding)
An underlay is a material placed beneath flooring surfaces, such as carpets or laminate, to provide cushioning, insulation, and sound absorption. It helps to create a smoother surface for the flooring above, which can enhance comfort and extend the life of the flooring. Common materials used for underlays include foam, felt, and rubber.
In addition to comfort, underlays can also improve energy efficiency by providing thermal insulation. This can help maintain a consistent temperature in a room, reducing heating and cooling costs. Proper installation of an underlay is essential for maximizing its benefits and ensuring the longevity of the flooring above it.