Hey do many plumbers not bother screwing basins with pedistals back to walls do the just stick them back with silicone. I just removed my old basin which had been in for years and it was just siliconed back to the tiles took some getting off.
never bother with screws on basin/pedistals!
of the many many i've siliconed.....NEVER had a issue! nice bead along the top and down the edges.
if there is a issue in the future or tap change, quick stanly blade cut and hey presto....slide them out for access without dicking about with pesky screws!
i use tin tack to hang boiers too!
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