Give your CBS walls the stucco system they deserve.
BioLime direct-apply lime plaster / lime stucco will achieve crack-free, long-term results. Originally built for maritime applications, BioLime finishes are superior to cement and synthetic stucco in all aspects.
See why – https://biolime.com/limestone-building-science/
System Calculator displays results as a 3/4″ overall finish:
Scratch Coat: 3/8″ applied
Brown Coat: 1/4″ applied
Finish Coat: 1/8″ applied