Packing floor tiles

[Fred]

wonky 4m2 floor today, all over the place. trowelled the floor, back-battered the tiles, sound as a pound, and even checked every other tile, time took, 4 hours, was a dog of a job though, with an old 60's heating system with the grill in the floor, and underfloor out-let pipes forthe toilet and sink...............

 

[Brad]

thanks for that comprehensive answer dave