DURAboardHD100' is a high performance crosslinked,pre-moulded, compressible joint filler board. It is readily compressible filler board that ensures low load transfer. The most compressible filler board for expansion joints‘DURAboardHD100’ (expansion joint filler board) is a non-bituminous superior alternative to bitumen boards. Closed cell hence negligible water / water vapour absorption.Resilient - recovers more than 96% with excellent chemical resistance and thermal stability between - 40 °C to + 70 °C. Bitumen free, easy to use and rot proof and bacteria resistant