Left hooker
Well-known member
We get dolly blocks down here 100x100mm or 150x100mm to bring outer walls up to level to match course work on inner skinwe do 560mm from conc to FFL, insulation buggers things up as it doesn't work brick. our recipe is from conc:
inside skin
block flat ( across the foot)110
block flat bedded up (lengthways)125
beam 150
insulation 100
screed 75
outside skin
block
block or 3 engineers
no need to lean mix fill cav and you have 235 under beams to fall sewer.
This is the typical build up