Sealing solutions,ultra,good stuff and came out superb like i said.I`ll try the xylene,thats just thinners isn`t it?Didn`t think ice and salt would do this.If this fails i`ll just re seal it in spring and add some anti-slip granules.When it`s wet it looks like when i sealed it so it should be ok,i`ve got 5 jobs off people passing who were impressed at how mine came out,i`m scared now that they will see what the salt has done before i get the chance to sort it and cancel,ha ha.This imprinted concrete can be a bit of a pain.Can i try the xylene this time of year on a clear day?Do you think it was the salt and it`s eroded the layer of sealant?thanks Dan