Porous pebble dash painting

[Jack07]

I'e been putting it off for a while but I'm going to have to deal with my porous pebble dashed wall.
Driving rain is causing reveals to leak and after hours of filling snall cracks in the wall I'm fighting a losing battle.

I want to paint it and I know its labour intensive but I have to do it.

I was looking for some advice on the best way to tackle it.

I was going to power wash and clean it up than apply a tanking slurry with a brush before painting over in a masonry paint.

Any advice on method or products would be greatly appreciated.

Thanks

Jack