Some advice please:- What is the best way to join two edging strips? I'm finishing a row of tiles with shiny aluminium edging strip, the wall is 3 metres long and the strips come in 2.4m lengths. Do I butt join them or does a scarf joint look better? Also when tiling a window reveal, do I put the edging strips in the reveal or on the upright of the wall? Many thanks, Les