--- In papercreters@yahoogroups.com, Ron Richter <ronerichter@...> wrote:
> I didn't mean to make such a stir.
<shrug> If we don't challenge assumptions and generally held beliefs,
we may never find the truth. I prefer to be annoyed and end up knowing
the truth. =)
> Mulling this issue over just brought up another thought, does the
> stucco adhere as well to the compressed block as it does to the
> uneven surface of an uncompressed block that generally makes uneven
> rough surfaces for adhesion?
In my (admittedly limited) experience, PC sticks reasonably well even
to smooth surfaces. For instance, it stuck quite well to my wheel
burrow, concrete mixer and mortar mixer, all of which are smooth
metal. It stuck to the edgers I use for my path, which are not so
smooth concrete. It stuck to the molded step stones I made, which are
smoother concrete. It sticks to itself, although not as well unless
you prewet it again. It also has a bit more trouble if you make it
perfectly smooth (with a tamper in my case), but that would be more of
a problem in a monolithic pour, since blocks would still have edges
and mortar lines to rough it up a bit.
If I were going for a stucco'd end surface (and I will eventually), I
would not worry too much about making the wall smooth. It will get
covered anyway in the end. But if it turns out you need to rough it up
a bit, there are plenty of ways to do that (chainsaw, hatchet, stiff
garden rake, etc).
Lastly, several folks have said that adding latex paint to the stucco
mix greatly increases it's stickiness, to the point where they used it
on metal shipping containers without a problem. You can find links to
the video in some earlier posts.
- Ernie
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