Foam fillers are materials used to fill gaps, cracks, and voids in various applications, providing insulation and support. They are commonly made from polyurethane or other types of foam, which expand upon application to create a tight seal. This helps improve energy efficiency in buildings and prevents air and moisture infiltration. These fillers are often used in construction, automotive, and packaging industries. In construction, foam fillers can enhance the thermal performance of walls and roofs, while in automotive, they help reduce noise and vibration. Their versatility makes them a popular choice for both professional and DIY projects.