The most compressible filler board for expansion joints dura board hd100 is a high performance crosslinked, Pre, Molded, Compressible joint filler board. It is readily compressible filler board that guarantees minimal strain transfer. Duraboardhd100 Joint filler for expansion applications board is a non, Bituminous superior alternative to bitumen boards features closed cell hence negligible water/water vapour absorption Superior resistance to chemicals bitumen free User-friendly, Resistant to rot, And inhibits bacterial growth applications structural expansion material for sealing joints masonry construction using concrete bricks and blocks on paved roadways and airport landing strips parking areas, Industrial flooring & taxi tracks etc. Infill panels that connect isolation zones decks, Abutments, Joints for pier hinges etc. As a backup support for sealant joints for taxi tracks, Airport runways etc, Expansion within concrete highways. Expansion joints in industrial flooring, Parking areas etc. Capable of holding water and preventing water entry structures