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I think I posted this in the wrong forum initially, sorry!
I need to put some wedi boards on the wall for tiling. When the old tiles came off they left a recess behind them -- there's old plaster, then two feet of bare concrete blocks that the tiles were stuck to, then old plaster again below where they were. The gap's a centimeter or two, larger in places where a chunk of the concrete block came out on the back of the tiles. I need to get it nice and flat for the wedi boards to go on and be supported behind. I've got sand and cement, what's the best mix to make? Cheers
I need to put some wedi boards on the wall for tiling. When the old tiles came off they left a recess behind them -- there's old plaster, then two feet of bare concrete blocks that the tiles were stuck to, then old plaster again below where they were. The gap's a centimeter or two, larger in places where a chunk of the concrete block came out on the back of the tiles. I need to get it nice and flat for the wedi boards to go on and be supported behind. I've got sand and cement, what's the best mix to make? Cheers
