hi guys, Kirk and Jason with Kirk Giordano plastering, today I want to show you how to skim
coat some cinderblock walls, and yeah we've shown this before, but what we're doing here is a little
bit more unique, they're gonna paint this, put a mural on it so what we're doing first is we've
had to prep this if you guys, that's a separate video within itself, how to prep cinderblock wall
if you want to see how that's done simply click right here, and you'll get to that video what
we're gonna do right now is I'm gonna show you a few of the tools you'll need then we'll show you
what we've already done, which is about a hundred feet down that corridor number one, try to show you
every little thing you need I'll get to it first thing is you need to hose the wall down although
we already pressure wash to piss out of it, it's dry right here so we're gonna hit it with water,
now granted we're not gonna show that spot, okay, we're gonna hit this with water what you're going
to need is a hawk and a trowel, now generally ill use this size hawk and trowel, I do have
a larger trowel for when I'm done, and I want to smooth everything out, and I do have a smooth
Darby, this is more like a rod guys, so first thing I'm gonna do is we got to get this smooth enough
where they could paint the mural on it they're gonna prime it and paint some fancy designs on
there now because we're video in this we kind of let our mud get away there's our mud right
here and that's okay it's a little hard but I can make a work I'll show you, I'm only gonna take it
from here on up that way, I can give you guys an idea what the heck we're doing okay guys keep in
mind with exterior cement say this is Portland cement, it only go so smooth guys, it's not like
an interior plaster say like a diamond or a taping mud, where we have the luxury of plastering it
down smooth like glass, I tell these folks well, we can do is with regular cement,
exterior cement, it has sand in it, see how I'm taking my tops here, because we are doing the tops, four, for
the sake of trying to show you folks how smooth we can get this spread this stiff mud here and again
sometimes we let the mud get away, because we're doing a whole bunch of other things now what I
want to do is I want to build up I want to cover the grout lines sometimes you can hit it twice
and see this top piece here, I'm using this for my template because we are doing the top, I'll get some more of this stiff
mud make it work, and put it on here come up come up, come up, now again, I'm taking this but I want to
reinforce this corner and no no bonding agent is necessary for this because we are going over very
porous block. okay, now say for example that being done there if I want to take it all the way to
the ground I can but I'm just showing you folks a small area because we're gonna get back busy,
all right now what I was showing you earlier is you can keep this in mind this is a Darby
it's a smooth Darby then we take a Darby we come up just like so gives us a truth straight wall
it's like yeah you take sideways, I feel a rock rock, that's okay and what we do is we're gonna
do this whole wall like this here then we take the top take the top this way while I'm at the
top I might as well finish this, is what we'll do we'll take some mud put it on top of there
put it on top there, one more hawkfull, just to finish the top guys, then I'll show you how we
really smooth it out, I just kind of look at it if I see it here I need a little bit more, I put
a little bit more, okay now I'm taking the top got a rock pull it out I'm taking the top and
I'm pushing it into my side here this would give me a nice straight even top now all right we got
that and remember it's going to adhere by suction one more thing here because I need to this part
but I needed to get that yeah alright now we take the Derby once more and this is a smooth Darby it
does not have the serrated edges like when I'm using it on wood by the way guys I've said in a
number of videos if you give stucco a hard steel trowel finish it'll crack but going over brick
or cinderblock it very rarely will over overlap which has a wood base every time it'll hairline
crack but again over brick and rock and block cinder block concrete this is the concrete it
won't crack if we go with a steel finish alright now that I use the Darby I can take two things I
can use my smaller steel trowel or I'll just come over with my large steel trowel now this one is
for interiors and it's basically for curved or radius ceilings so you don't leave lines but I
like to use it for all almost everything okay now we take this and we go over it and what I'm doing
now is I'm getting it as smooth as we can get exterior stucco with sand this is Good sand in
it and that's it's a plaster sand Oly, now I know some folks might say well, I can get it
smoother than that, well you can get sand only so smooth guys, taping mud man we can make that like
glass, now where I have this one divot I just keep going over it just like this, this needs to set a
little bit more but I'm trying to give you guys an idea of the tools you'll need for a hard steel
trowel finish over a block and if the house is painted there are no exceptions, you do the exact
same thing only you put a bonding agent so so that the Portland will it here all right I'm gonna come
your way, Carl okay, I'm gonna show what we've already done and then we're gonna get busy and
finish this all right guys that's pretty smooth now in about 15-20 minutes when this dries I'm
gonna hit it one more time with these same tools over here again okay if you could show this 100
foot span here this walls done it's already pretty hard now we what we've done is we've taken these
trowels and we just go over it back and forth back and forth how loose is this that's how loose it
is that's okay guys I'm trying to prove a point here when you do that we've just got to fix your
mess and they are going to prime this and paint now they asked me first what kind of primer do
you recommend I said man recommend anything that comes and looks like glue it's got to be a thick
thick primer and that will give this as much of a base as necessary anyway this is ready for a
mural Jay and I are gonna finish this I thought I'd point out how to skim coat cinder block with
a steel trowel finish I've shown you guys a lot of other things but not a steel child finish all
right guys we're about to put a conclusion on this we had one but it really didn't show what
we were after so now that we're in the Sun we're just finished it up and you guys can mist it see
what I'm doing this I'm just barely missing this now we don't want it we just finished this we
don't want to wash it off but we do want to mist it a little bit of water like that guys it makes
the corners and all of that stuff dry a little harder and it's real good for the wall too anyway
this is Kirk and family we thank you for watching and as usual guys we'll see you on the next one
you