Hi, I'm having some external rendering done on my property. The renderer has started beading the brickwork and putting on scratch coat, however he is not nailing the beading to the brickwork just using the sand/cement mix to act as an adhesive. Is this cutting corners? Will the beading be more likely to shift away from the house, crack etc if it is not nailed on? Is he rushing the job or is this acceptable? Help! He's only just started so I have not paid yet.