that wasn't the point.
context is to determine the quality of the limewash that mitchell
is going to use. he has expressed his reservations about
so called limepaints.
but in fact is seems likely that 5-10% polymer in a limewash
is not the worst thing in the world.
my understanding is that in the united states there are some
rather poor products calling themselves limepaints as well
as other products that might be equivalent to the description
i have given of the limewash i use.
perhaps it is all predicated on availibility of 7 year old lime putty.
the small addition of polymer does have other 'benefits' , it enables reception of deep rich colour into the material.....which is a dead give-away that it carries some polymer.
so look at the % ingrediants in the product - MSDS - and pay less attention to shop/sales hype.

the gear i use is the same composition of their stucco antiqua
which is essentially VP......to return the compliment - obviously
i would not import from america,but i might _need rivesto,
novacolor is next,and ard . these latter two also contain
polymer.....perhaps 2% so my gear stacks up quite well.
if mitchell wants to be super-safe let him get rivesto VP
and dilute down to make a wonderful limewash.
similarly,novacolor or ard VP's will perform well.
VP=venetian plaster.