how do you folks, kirk and jason here with kirk giordano plastering, today i want to talk about
lime plastering this diamond lime plaster, because a lot of people have called and asked and say kirk
what is and what does that mean when like for example this is usg
diamond plaster, it's uh it says right here veneer finish that that topic right here,
veneer finish throws a lot of people off because they say, what is the veneer? What kind of mineral
is that? well it's not a mineral it's an application meaning a thin coat, so when it says
veneer finish what it should really say is, lime finish because you take the limestone you put
it in a huge kiln or furnace you heat it up and you get lime or slaked putty
either one then when you add water like what we did here you come up with this stuff right here
and this the thing i'm going to answer today is can you just go one coat
technically when we put this product on here and by the way, in the UK they call it skim
plaster, that's a better terminology because all i'm going to do is skim this this is an
old house about 100 year old and what they had here was old wood lath so the wood lath he just
puts sheet rock over that he didn't have to we could have skim coated right over the wood lath
after we prepped it what is that pink stuff there, that pink stuff is "Plaster Weld," that's
made by Larson's, do you actually need the pink stuff" No, you can get quikrete sold at home depot
this right here you got to go all the way to the plastering yards to get it so if you
want to use that you got to google, "plastering yards near me anyway this particular plaster
it's limestone so it's a lime putty and what we're going to do is we're going to put a coat on that
you can't really see it if you're facing it but it's about a half inch thick so i'm going
to show you guys and explain something what people ask me often they say kirk how come
we need to put a base coat under it and i say you don't really have to unless you know the rules
the rules are if you're going to apply it over sheetrock or any other substrate clean
that substrate meaning get all the dust dirt grime off it because this will not adhere so
now here's what i'm going to do guys a lot of times people will say
how can you use such a big trowel well the big trowel gets it true and plum with almost one swipe
there it is
if you're working with a little bitty child and you'll be doing this all day,
and you'll have to rod this section because it's hard to figure out how to make it trim plumb
see that's where it's true and plumb from this piece of sheetrock to that piece of sheetrock,
and one of the things i guess I'll point out right now is
people say well how come you can't just put one coat of veneer you can i'm doing it right now
and the reason uh i'm doing it is to prove a point guys okay if you put say for example a base
coat of structural light now when that structure light sets and keep in mind structural light takes
about three to five hours to set but when you go over struck the light that's already set that that
structure light will give you a hard dense surface meaning this will absorb right into it right now
as it as it goes this diamond usually takes about diamond or imperial they take about say once once
that bag is mixed it takes about a half hour for this stuff to set unless you go and over struck
the light that's already hard then it'll suck the moisture right out so you've got about 10 minutes
so i know how much time i have and so to prove a point as far as these holes right here
the idea if you read the bags it'll say this material is allowed to go 3 16 of an inch
thick can you go an inch or two yeah i've done it thousands of times say like i'll be doing a house
and i'll be finishing it and i'll see a bunch of holes maybe oh i'd say anywhere between an
inch to two inches deep and what i'll do is i'll just fill it with this now granted when this sets
it sets like say, for example in the bucket right there it's going to be a half-hour
so as soon as i took my first hawk full out of here, i got a half hour to use it, meaning apply
it then it's going to get hard, and when it gets hard, i'm going to bring it back to life and get
some of the holidays out of it and make sure it's kind of true and plumb here and there
and can you match a skip trial finish like that absolutely
sure you can, but the reason i'm doing this right here is because
When you try to do one coat, you just have to know when to play with it when
they leave it alone and when to play with it. So most people, if they do one coat,
what it'll do is it'll they'll go over trial it once it starts to set. They'll start troweling it,
and that'll if one coat it'll separate from this or to create blistering spider checking cracking
things like that so once i get into this because we got a lot of stuff we're doing here once i
get this on, we're gonna go do some other stuff and then when this sets in about another say oh.
Less than 20 minutes, i'm gonna come right back to it, okay guys? We are multitasking today
we've got a whole bunch of rooms we're doing, so i wasn't sure if it was a good idea to
show what i'm referring to because the question is people call me, and they said can i do one coat
over sheetrock and my response is i don't know if you can, but i can and here's why guys okay
now this is just its limestone lime plaster it's over the sheetrock, and the idea is the sheetrock.
well the plaster weld the emulsifiers have got to set then the plaster sets and now that substrate
becomes one it becomes solid if you do that and right now i can look at this plus we have a big
pile outside like this of excess and i stuck my finger in it it's starting to get hard so the
idea is this is starting to get hard because the bucket is there's a holiday right there
we put struck a light in a few areas and we don't want to drag that anyway now that
this is set here's a number of ways you can do this guys because you don't want to disturb it
you want to keep a wet trowel and if this gets set all the way where it's gone
here's something you can buy it's called a spray bottle and you just
pump it up and spray it and it brings it back to life i prefer to just use a wet trowel like like
so unless we're doing whole complete rooms and here's how you do this now we we don't want spider
checking we don't want separation we don't want hairline cracking or blistering it'll it'll have
a bunch of bubbles here if i keep playing with it so okay here's what you do now that now that it's
starting to set you take your trowel wet it or wet the wall either way works let it and come up
you see, that's already getting hard
and it might take some pressure you might have to put some force on it like say
that's the equivalent of lifting maybe a 10-pound dumbbell,
and you just push hard now but don't over trowel it
let's see there it is that's done, guys now let's see the bottom here
that's done i'm going to get this a little bit to bring it back to life
that's done but that's really smooth and this is not so smooth so
what i want to do is i don't want it too pretty because we don't want to have one
pretty perfect spot and the rest not so so i'm gonna put a little skip right here and that's
just to make it so it's not completely uniform or it won't match this the same applies up here
come on that ladder all right so the same applies here push hard and it all depends
you see that excess here watch that's a little bit of excess there and it's setting right now
so i'm being careful not to over trial it there's about six to seven swipes that matches
that matches this now i'm gonna just put some imperfections i'm gonna take the mud that's on
the trial right now come down that's what happens when you put structure light and it's got a
little bit of sand here and there okay now that's not going to separate it's not going to blister
now okay we go up here another thing guys now granted we got four rooms we're doing right now
and in the back of my mind i'm thinking man what are those are the rooms doing so we're
multitasking doing a lot of stuff if you're going to use this guys now this is a skip trial finish
and he put fiber glass tape around here if you put fiber mesh tape
around a perimeter i mean that's okay for sheetrock but for plaster the plaster weld is
better it bonds the new to the existing whereas if you put the fiber mesh tape now i've got a
cover that so that'll take a little bit extra know-how which is not a big deal
and what i want to do here is bring the texture out
okay that's done as far as application as far as troweling so we don't get the blistering effect
or the separation now that's done now i've just got to put a skip trial texture to match this
here and that part is not so bad okay we're gonna i'm gonna grab some excess plaster and
show you that last piece all right guys i'll show you another indication how you know it's
ready to trial on right now i'm just taking this little throwaway brush and getting my corner uh
dropping it down here's how you know when it's dry it darkens so you can see that's kind of dark so
what i'm doing now is i'm just i'm just putting on a skip trial finish and if the camera shows it
you can you can see the difference in color but with us i mean i've got to match the finish so
this is the skip trial it's like let's see if you can see down here see a difference of color that's
when you know it's starting to set and that's when you start to hit it that's to match this finish
here and where the tape is i gotta put it a little heavy because we want to cover that ridge so when
you guys are using plaster you really don't need uh tape unless it's going over sheet rock joints
then you put the fiber mesh tape but as a rule you don't do that so all i'm doing now is finishing
the skip trial finish then we've got to get back to all the other details we got going on here
anyway guys my name is kirk jason on the camera we thank you guys for watching and as usual we'll
see you guys on the next one all right folks we've reached the end of another video as always
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to keep supporting us and as usual from the entire giordano family we'll see you on the next one