How deep can you go with render?

[pilsbury]

Ive mentioned before my slight building error with my extension wall that is a continuation from an existing wall that is out of plumb. I ended building my new block wall plumb so it’s perfectly flush a DPC but just a tad under an inch set back at eaves level.

I’ve had suggestions before about camouflaging this, but I’m keen to try and flatten out this error when I render, likely sand/cement. I intend to use 2 stop beads either side of the existing/new wall as a movement joint, clearly with the new wall side built out.

Is there a maximum thickness of render? Is it wise to build up in layers? How many? I’ve been told reducing strength mixes as you build out. Or is this doomed to fail?

 

[Alastairreid]

You will lose an inch over 3 coats..2 scratch and a finish, scratch coats at 4-1 and finish at 5-1..dont forget the waterproofer in the scratchcoat.

 

[pilsbury]

Ok , so is possible. What is the standard depth of render to a stop end or bead? The built up area will be that + 1”.

 

[Alastairreid]

19mm ish.