Sorry i never made my self clear theres only one comb ceiling above the vanity but thats good to hear i thought it was the correct thing to do,
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See how i have mosaics above well there 6mm thick and the white tiles are 9mm is the correct way to get both tile types level to put a thicker bed on for the mosaics and use a 6mm notched for the larger tiles?? I used my gauge trowel to put a smooth thick bed then using a float bedded the mosaics in the as i said used a 6 v notch for the large.