In my opinion the best option would be to use a Synthetic Stucco base coat & a Synthetic Finish with color & texture selected.
Example of types of materials i would use.
(1) Clean existing Stucco with a pressure washer.
(2) Apply STO Plex W surface conditioner .
(3) Apply STO RFP (reinforced fiber plaster) with STO Reinforcing Mesh 4.8oz per sq. yd. This base coat is flex able, will bridge cracks & is water proof above grade. If you need to go below grade use STO Flexyl it is also flex able & will bridge cracks & is water proof below grade.
(4) Apply a STO finish coat of a color selected & texture selected.
You can also get finishes that are resistance to mold, mildew & airborne pollutants aren't likely to stick to it.
The above type over lay will be very light weight & at the most no more than about 1/4" thickness max. depending on texture selected.
Example of types of materials i would use.
(1) Clean existing Stucco with a pressure washer.
(2) Apply STO Plex W surface conditioner .
(3) Apply STO RFP (reinforced fiber plaster) with STO Reinforcing Mesh 4.8oz per sq. yd. This base coat is flex able, will bridge cracks & is water proof above grade. If you need to go below grade use STO Flexyl it is also flex able & will bridge cracks & is water proof below grade.
(4) Apply a STO finish coat of a color selected & texture selected.
You can also get finishes that are resistance to mold, mildew & airborne pollutants aren't likely to stick to it.
The above type over lay will be very light weight & at the most no more than about 1/4" thickness max. depending on texture selected.
