wots the best way of rendering externally over accrington brick? was thinking of the aluminium sheeting 8'x2' using screws/washers into brickwork(lots of screws i guess). Alternatively i was thinking of keying brickwork with a grinder and sbr bonding slurry. Will both work just as well or is sheeting it out more guaranteed that the render is less likely to fall off? + Where should the bell cast beading be in relation to the damp proof course? thanks