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lucius

lucius

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Going over some walls which are rough rustic finish and emulsion painted which is sound with one coat as customer wants them smooth whats best to prime with PVA or SBR.
Lucius.
 
hi lucius, do this sort of work most of the time, normally a scrape to get the loose of, then 2 coats of compaktuna, its like a very expensive pva,35 euros for 5 litres, let fully dry, and then 2 coats of skim as normal. hope this helps mate, del
 
Cheers Del never heard of compactuna but we have PVAs here around that price, what plaster do you use for finishing?
Lucius.
 
normally perlita yecaperl, or perlinor moran, think that you can buy perlinor where you are, allso think that you can buy a bonding agent called weber fx, very good stuff, 90 euros for 15 litres, they use that here on concrete structures to take the s@c render. hope it helps del
 
Hi Lucius

I would knock off or scrape the high points of the rustic finish and then apply one or two coats of PVA depending on how quickly the first coat sucked.

Then apply a thick first coat of multi finish to try to get as flat a first coat as possible and then depending on how flat your first coat is dictates on how thick to make your second coat.

Had this problem on job recently where every room in the house had thick deep artexed walls and ceilings.... nightmare!!

Cheers Muck :)
 
Thanks del and muck but we dont have multi here i cant get perlita where i am but have seen it on the coast an hour away so never used it how does it finish like and would you use it like multi the Webber fx i use all the time great stuff but a bit trumpy thanks Lucius.
 
lucius said:
Thanks del and muck but we dont have multi here i cant get perlita where i am but have seen it on the coast an hour away so never used it how does it finish like and would you use it like multi the Webber fx i use all the time great stuff but a bit trumpy thanks Lucius.
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when you use perlita, mix it with a big whisk just like multi,... but when your happy that it is mixed, carry on mixing for about 1 min, what happens is that it goes wet again, then add more powder and mix until its your happy with it then use it. if however it does not go wet, youve put plenty of powder in so just use it when your happy with mix, important to know that you have taken the mix past the gone wet again stage,. what happens is if you do not do this, it will be no good on low suction backgrounds, plasterboard being one of them, the perlita tries to seperate from the water, bit like s@c in a barrow with no feb in it, the water comes to the top, if you know what i mean,. working time is about 40 min, forget about laying 4 walls on at a time, just do 2, that is hard work by yourself, keep on top of it, on second coat 1st trowel within 5 min, you know the rest :) this applies to all reskims of low suction, the last trowel, you will see it start to change colour, you need to have in hand at this stage, dont bother with it, let it set, complete change of colour, white to grey, it will feel a course finish, so a good final trowel gives it a smooth finish, if you try and finish as its turning colour it can start to tare, pending on the background, any bubbles etc they all come out better than multi, cheats :D dirty water works 15% of the total volume of water, remember there is dirty water and dirtywater, hydrated lime, a good handfull in a mix, both will increase the setting time, but remember it takes the hardness out of the plaster, i use these cheats for small jobs just to get the first coat on its way, on high suction and moderate it goes nice, no final trowel when its set as muckspreader said getting back to the original question, forgot to say lay it on thick, it will take it, del
 
Thanks Del spot on bit of info ime down the coast next weekend so i will get a couple of bags and try them in my own house see how i get on will let you know i excpect putting a bit of lime in it aso helps bind it a bit to stop it seperating.
Thanks Lucius
 
Del do you think it would be quicker to do do 2 coat perlita or 1 coat machine plaster say 6 or 7 mill by hand ime thinking about the same perhaps longer with the 1 coat as it takes forever to go of.
Lucius.
 
dont know mate,dont know how long machine plaster takes to go off, if its 6 or 7 mill i would use perlita, at least you know whats gonna happen, praps do it in 3 coats, but i think the last thing you want, is say 7 mill in one hit and it sagging, with reference to the lime dont put to much in,.........to much lime goes off in 10 15 min; and when set you can push your fingers in what you havnt used, and the next day, a big handfull of lime to roughly a bag is enough, to slow it down use any joint compound, 30% helps to a bag roughly, 50% you will be waiting for it. cheers del
 
Hi del yeah one coat you can whack on up to 20mm no probs without sagging it just takes ages to go of especialy if on PVA but the only bonus is you can give it a spray in the morning and it will still trowel up. Do you use PERLITA and PVA for covering Gotalin paint i would be interested as last year i done a whole house but used some crap what decorators use made by aguaplast 15€ a bag and an absolute nightmare but guarranteed to cover gotalin, where i live it is a small community only 2 secs to loose a good name so i didnt take a chance.
Regards Lucius
 
this is the pva i use lucius

Link Removed

hope the link works now

it's ph is low and doesn't react with anything

cheers Del
 
Its that spray on stuff, flecky bit like artex but not as heavy bit likethe old wood chip wallpaper.
Lucius
 
Funnily enough the stuff i use sometimes is called " compactpuma" made by grupopuma which is also good but i think they are both SBRs.
Lucius
 
lucius said:
Funnily enough the stuff i use sometimes is called " compactpuma" made by grupopuma which is also good but i think they are both SBRs.
Lucius
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compactpuma is good stuff as well, sell that here,the paint sounds like stucco, very flecky, does this sound right, think weber make it, or similar product. del
 
Yeh just an interior flecky spray on paint most of Spain is covered in it, its called Gotalin here.
Lucius.
 
Yeah Grand ime sure your right but would you PVA first, machine plaster sticks to anything perhaps i am just getting paranoid as i said before i live in a town with a small community of expats and i have a good name just dont want to lose it over a bit of plaster falling of the wall.
Regards Lucius.
 
thistle Bond-it a green emulsion like pva base with sand grit in it. good sealer and gives mech key. very good but expensive
 
Thanks plast we dont have thistlebond here but their is a simillar product available which is SBR i think with grit but happy days the client has gone for metal and board, thanks to everyone for their input on this one ,
Regards Lucius
 
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