Disintegrating wall heavy spray from traffic

[Vincent Scardale]

A solid wall next to a main road - lots of water spray - has blown off at the bottom. The property has not been lived in for over 40 years, so there was little internal induced condensation. However, there was damp around the interior wall connected to the exterior exposed spalled/blown brickwork.

Should I use lime render and let the wall breath or seal it with cement render?

Or are both these useless, there's something better?

Thanks