I have asked around regards to this and received mixed advice, so I was wondering if anyone here could help out...? I have 72 sq metres of pitch pine parquet (reclaimed), each block has a pretty thick layer of bitumen on the underside. Is it completely necessary to remove every last bit of bitumen? And what is the best (and fastest) way to remove the bitumen? Also, once the bitumen is removed, it is advisable to lay it with bitumen? Or is there an alternative? Thanks in advance for any help!