[lupo]

Julian points at the appropriate thread. I would endorse any post that makes the point that the render should, preferably, be breathable, If it's new build you don't lose anything by insisting on this. If the render is on an old wall, or is, in itself, delicate in some respects, breathable will stick; anything with vinyl in it, e.g Sandtex or Dulux type paints, will blister and lift off very quickly. The very best paint I know, for render, is Keim; which is an Austrian, mineral based paint. If it it looks shabby after 15 or so years (which it won't, unless it's in an exceptionally difficult situation), a little wash down with water will bring it up to new. Sorry I can't help with Italian paints, but I'm sure Keim's reach will extend to Perinaldo.