Poona Steels

An expansion joint filler board is a pre-molded, compressible material used to fill gaps in expansion joints within concrete structures, allowing for movement due to temperature changes and settling

An expansion joint sheet is a flexible, typically rubber or elastomeric material used in construction to create gaps between concrete slabs, walls, or other structural elements, allowing them to expand and contract freely due to temperature changes, settling, or seismic activity, preventing cracks and structural damage; essentially acting as a "movement joint" to absorb stress caused by movement in the building materials.