on the previous video we showed this harder scratch coat this wall here talked about all
the preparation and what I was doing bottle of stone and of course on this
video I'm going to show you guys more in detail on random over this painted block
so the tactic strategy I've went for is asbr painted over it and definitely given a hell of
a coat here I want to make sure it's well covered and also the other part of this strategy is I'm
going to put some in the SBR in the mix so some of you are going to ask why am I not Scotland if you
take me look over my shoulder there the ground is completely clean it's finished so Scotland isn't
really a great option again we pick and choose our bottles and according to the job you know
the block here still has plenty of key in it also so the answer to that is obviously I can do Scott
coat that's not a problem I know the ratios we have videos on the ratios and really just answer
your question why the Renault Scott code again you gotta check pick and choose your bottles
this one's completely clean all round the mess is going to Warrant more Hassle and it's not like
it's red brick I'm trying to help kill suction or Bane then any loose wobbly bricks and blocks it's
painted black and the spr is gonna be more than enough to help hold Miranda especially as we have
some hbr in the scratch coat as well another quick thing about the spr obviously we're in the winter
at this time but you know it could be summer when you're doing your project your DIY project or you
know maybe you're doing a job at home or whatever it is and it should never really paint too
far because aspr teams the it's not like PVA it doesn't want to go tacky it just wants to dry like
it'll go at the dry in seconds you know with five a little stage in between so you want to be a plan
you rather your scratch coat over the top of this as it's wet so that you know it's all set together
um again not so bad as we have some in the mix I know I keep saying that but that's that's the
beauty about this you can add it to your mix as well so you'll lose now I'm a plan the scratch
cook three to one as I said on the previous random video and what I'm doing here is I'm
really pushing hard really exaggerating here I'm definitely trying to prepare that stuff and every
noog and cry into the blocks as you can see all the black dots they're they're always slate voids
we holes in the concrete which has been made like that on purpose guys and the reason for that is
so the reader can key in and bond to the blocks and so the reason I'm pressing hard is I'm really
trying to force my render in my scratch code into that and I'm not trying to put a particularly
heavy coat on as a lead coat here well the scratch code that's all in the name scratched and all as
well um scratching with the scratcher the scar Affair but yeah I'm not one to go dead dead
heavy I don't have no risk of anything slain and just really concentrating on getting a nice even
coat nice and neat and like I said I'm really really pressing in because to me that's where
all the strength is going to come here is if I can get it as sunk into them blocks as possible
um but yeah another re-tip is just keep that Hawk underneath your trowel when you're gone and you'll
find you don't drop as much the other big massive question we get a lot is why are you starting on
the left side not the right side and simply put it this is the most comfortable for me I plan on
making more videos more around this and I'm not sure lots of other plasters do you think about
this or not but certainly not the ones that saying and then types of comments and it's all got to
be to do with what you're comfortable with doing guys again this is scratch coat so you know you're
really you know heel the toe with scratch coat and float coat until the heel you know so you can do
that either way and working in the urander yeah you're always working to do around there you know
you're working left to right that's the same as you would be walking regularly after it's always
working to do around there and like I would say as long as you don't leave any air bubbles in behind
the gear you should be ground you know that's that would be your big killer when it comes to
the random floating just to make sure that you're not trapping any air in behind as or will lead to
so you know boost it's not connected to the wall so you don't want to be having any of that and you
can see the SBR in it and you can tell it's that wee bit stickier but it's I still find
it nice to work with if you do asbr does tend to make your your render set that little bit faster
but what I've I've found out is that if you put that bit too much aspr end guys it actually will
do the opposite effect it won't set it'll take days to set and that's because you've killed
it with the glue you don't want to be doing that so try and keep your ratios a bit bit more away
is you know a little does a lot in this case when you're on at the mix yes I painted it on pure but
that that's that's a different thing than mixing it through your mix because if you mix that amount
through your mix um it's more like an adhesive that than a cement down as well so the cement
won't set because of the SBR it sounds strange but if you want them to test it yourself you're
more than welcome to test it on a meat bucket full mix up on up put a whole paint of the
sbrm and I guarantee you it will not set very quickly and put a couple capfuls in
it will set much quarter and both will probably be very very strong
and pretty waterproof as well cement itself is waterproof and again guys nice and neat here
back to the actual plaster nice and neat and look at that nice key for the next top coat
so the reason I didn't scratch right over to the pan well I didn't have the floor covered
I'll tell you it's good to you know don't cover that and then when you're painting
goodness if you're an SBR you know you've got it covered you know like so
thank you when I've coated that I know it's all covered that's the joint cover
as long as you don't spray it over the top as you spread it over past it you're going
to mess a bit with the SBR then I think this clip was in the previous video but
it's such an important wee one again I like the shirt basically if you do have any cracks
guys like so or some sort of bad looking voids or anything you can use some wire mesh or some
mesh like so and what this does is it'll help reduce the chances of cracking again nothing's
ever 100 but doing this seamless skin me skimming inside skim taping them and Joints up and stuff
it's it's better than not doing it and it should reduce the chances of it re-cracking
and in the third and final video guys I'll be just going over heart iPhone is the render and sort of
some more tips and tricks on that so make sure and subscribe not to miss it [Music]
plastering rendering over old concrete block that are painted showing the ways I go about preparing them for the finishing coat and under coats of sand and cement render, showing how i use the sbr and giving many trades tips and secrets away for you to learn or know how to plaster / cement render old brick or block walls #cement #rendering #oldwall can you plaster cement render over painted block outside walls sbr pva mix ratio part 2 of 3