painted walls

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daz1968

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any ideas on pva ratio for silk emulsioned walls. i know i need to scratch the walls to get key but not sure with ratio cheers
 
Not this question again ;D
Wonder how many people will say use bond it or WBA ::)
Just read the tub mate don't need to seal silk the silk is the seal just pva & skim when nearly dry so it doesn't slide all over the place ;)
 
no it aint at all if you use a strong mix like you should on the second coat youll use as much then theres messing around with sand, then youre using something youve just made up ;D
 
always getting shiny walls these days and all im doin is pvaing em, giving it a good half hour and if it aint proper dry sponging it back off before i get the plaster on...
let it pull right in, flatten it, let it go right off than just chuck some water at it and shine the marks out... too much hassle to 2 coat it, be there all bloody day...
does have a tendency to tear though if I aint carefull finishing it...
might just give the old sand trick a bash see if it stops the tearing....
firm wont supply gypbond, too much hassle getting knocked into a property day before to gypbond anyway...
 
might be worth devil floating the walls first mate push the screws through a bit more and give it some
 
spunky said:
might be worth devil floating the walls first mate push the screws through a bit more and give it some
tried that once or twice but it takes a bloody site longer than you'd think, alright for a private job but the prices dont really allow for anything other than a quick scrape of any lumps/bits of loose and 1 coat of pva before you need to be on it...
seems to work alright on the ceilings but the walls are rock hard and it just tends to wind the screws back through the float... im probably going the wrong way round in circles.. ::)
its all about finding the fastest way through em at the minute... half the time I was held up by the sparks last week... and I lost my bank holiday 'void' property cos they hadnt been and 1st fixed it...
we are using that 'jewsons high concentrate' pva though, good stuff...
no board finish though, its either multi or bonding, did see a solitary bag of hardwall in the container the other week... :o
 
yeah sand in pva make them walls grippy as hell, been doing this for ages ,always handy to do it the day before if the job/price allows it,
 
is there anything you can chuck in pva to make it dry quicker? just thinking about the cement idea mentioned previously...?
be nice to go in, roll it, have a smoke and get straight on it...
 
spunky said:
a bit of finish mate
never thought of that... ill give that a bash next week, nice 1 8)
think ive got fits for a few days though cos theres a chippy on holiday...
 
Same here been putting sand in pva for years.
Not sure what you can put in to make it go off quicker
but i did a hall stairs & landing over silk recently
and by the time I'd rolled it all & got the plastering gear out & set up it was dry & ready.
What i do is put a thin coat on with the sand in it,
not sure what ratio i just knock it up till it's rite ;)
but i do it a bit more watery then apply it thinly as possible
then it goes off quicker plus i always carry a blow heater on the van for times it doesn't go off just put it on & have a bite to eat in the van pop back in & it's dry ;)

That jewsons plasterers pva is good that's what i use.
 
richardbrown said:
pva + sand ..... bonding agent = completely different things all together
yeh i know mate and on private jobs i'd wanna use the proper stuff but needs must and all that...
if i can just stop it tearing and the odd time it wants to slide ill be laffin..
ill be buying a sponge float next ;D
 
I only use pva & sand on the insurance jobs i've been doing for a builder for years because most of the jobs are day jobs in & out in a day & I'll only use it when i think it needs it like on silk.
So thistle bond-it would be a waste of time making it 2 trips to the job instead of 1!
I've used bond-it on my own jobs & with my mate i help out now & again & found it ok,
but prefer pva to be honest it's what we used to use before all these bonding agents came out ;D
Quicker & cheaper IMO, also you use more plaster when going over bond-it (profit loss) :o
And it doesn't kill suction dead like most people think ;)

On a 1 day job:

Bond-it = 2 days, more plaster, expensive to buy & puts the bill up :o
Pva= 1 Day, use less plaster, cheap to buy keeps the bill down ;)
 
what about s/c screed over weather sheild paint (external)
say finish looks like the ocean all wavy and client wants it true and perfectly flat
would sbr / sand or wba be sufficient ?
goes with out saying, prepared with scraper and wire brush
:)
 
Ive been using that wba it a fair bit in recent weeks,it works.
Does exactly what it says on the tub,it seals friable surfaces and gives you the grip you require on low suction back grounds i.e concrete vinyl silk paint gloss paint etc...
This s**t is great for distemper.
i was a little scepticle at first but it is the mutts nutts.
Waste of money on artex and over skims though.
 
do you guys use river sand with pva then?? or just whatevers in the van?
i presume just a handfull chucked in with the pva bonding coat will do the job??
 
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