Sealing limestone tiles

[Old Mod]

I would recommend using a purpose designed sealer for your limestone tiles rather than the linseed oil. If you want to avoid the inflammable pageant vapour type then select one that is water based.
Personally I would normally fix the tiles and then seal them (then grout, then seal again) unless the sealer instructions or something else dictated otherwise.

I do remember that when we used linseed oil to polish up quarry tiles to give a nice finish it was also mixed/thinned with paraffin!

Think we used white spirits to thin it to seal handmade Mexican tiles when we fitted floors for smallbone