Base coat and skim

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After I have applied a base coat of plaster, should I apply PVA to it before I add the skim finish ?
 
Server said:
After I have applied a base coat of plaster, should I apply PVA to it before I add the skim finish ?
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Mix your pva in to the base cost. Save yourself a job.
When you mix up your top coat add some plasticiser too, it’ll trap the air bubbles and makes a nice light airy mix, make sure to report back with pics of your efforts. All the best. You got lab.
 
Tinytom said:
Mix your pva in to the base cost. Save yourself a job.
When you mix up your top coat add some plasticiser too, it’ll trap the air bubbles and makes a nice light airy mix, make sure to report back with pics of your efforts. All the best. You got lab.
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Can you put paint in the second coat? That would save another job, wouldn't it?
 
mark hoare said:
leave a day and just be quick, no bubbles but like glass
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like glass?

ffs

32738
 
Ok, I have but on the bonding coat, about 3pm, it has firmed up but no doubt will take a while to dry out. Now I am going to put the finish on tomorrow about 10am.

I assume that I need to pva it (even though it won't have totally dried out) ?
Do I put one or two,coats of pva on it ?
What strength should I use 3:1 or 5:1 ?
 
Server said:
Ok, I have but on the bonding coat, about 3pm, it has firmed up but no doubt will take a while to dry out. Now I am going to put the finish on tomorrow about 10am.

I assume that I need to pva it (even though it won't have totally dried out) ?
Do I put one or two,coats of pva on it ?
What strength should I use 3:1 or 5:1 ?
Click to expand...
never messured but guess 3;1 better. one coat be reeto
 
Server said:
Ok, I have but on the bonding coat, about 3pm, it has firmed up but no doubt will take a while to dry out. Now I am going to put the finish on tomorrow about 10am.

I assume that I need to pva it (even though it won't have totally dried out) ?
Do I put one or two,coats of pva on it ?
What strength should I use 3:1 or 5:1 ?
Click to expand...
Put 5 coats on and a hat .

How bigs area .
 
If its just a skim of bonding and its totally dry a watery coat of pva and skim. I always brush key a a skim of bonding.
 
It's about 10mm thick ?
What to you call totally dry ? Whilst it's dry to touch, I guess it will take a week or so to dry out ?
 
So do I put pva on it and at what strength ?
It's touch dry but will have only been on the wall for about 16 hrs
 
The bonding coat is recessed by about 2mm , to allow for the finishing coat.

So do I put pva on it and at what strength ?
It's touch dry but will have only been on the wall for about 16 hrs
 
PVA the original with wet coat then when dry 50/50 sticking coat ,
whilst that's getting tacky wet down the bonding (using a spray for consistency ) then razor blade a key and tape crack lines
( I go round boxes and pipe/cables and stick in first coat :love: )
Thin coat 50:50 bonding/multi over the whole wall , you might want to re dampen bonded areas just before , then flatten with straight edge ( I don't devils float :love:)
2 coats very tight multi
 
I was not intending to skim the whole wall (it's quite large). This is more of a patch repair.

Are you suggesting just dampen the bonding coat with a spray of water, and not pva ?
 
Server said:
I was not intending to skim the whole wall (it's quite large). This is more of a patch repair.

Are you suggesting just dampen the bonding coat with a spray of water, and not pva ?
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Sorry as I petty much refuse to patch an old wall ( it's crap ) , I'd suggest filler and rub down
 
Yea but can you imagine how much polyfiller it would take :)

Do I just dampen the bonding coat with water ? Or pva?
 
Server said:
Yea but can you imagine how much polyfiller it would take :)

Do I just dampen the bonding coat with water ? Or pva?
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Dampen, razor , dampen
Or when totally dry , PVA wet coat , let dry , PVA 50:50 , two thin coats of multi
Either way fill cracking with filler
Then run
 
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