Hi there,
I'm looking to repaint a rendered outdoor wall on our balcony. I have cleaned it down and currently trying to decide which primers and paints to use.
I have some Zinsser CoverStain Primer Sealer and some Taubmans 3-in-1 primer left over from previous jobs. Would either of these work as a primer or do I need a specific primer for a rendered wall?
Also, there are a couple of cracks in the existing render/paint work (see attached) - none are very large, but do these need to be repaired or patched before painting or can I just apply primer over the cracks?
Photos of balcony attached - any advice appreciated!
Thanks!

