I use Nivea as it replenishes all the lost oils in the block...helping it keep young looking.
cheers! i usually weed kill after i have blasted every thing out, then go over it again just rinsing excess off! then obviously i leave a day to dry go back and sand/seal it. Had no complaints so far:)
There are no weedkillers on the market that would work the way you are using them. I suggest you contact your supplier and check his recommendation. If what he has told you is correct i would sack him as he doesn't know what he is talking about.
don't believe everything you see on telly , do you think Cameron will get caught soon moving the dead body.