PVA outside ya or na

hail hail

hail hail

Private Member
PVA outside ya or na
PVA outside ya or na
PVA outside ya or na
PVA outside ya or na
PVA outside ya or na
Will be doing my reveals soon on an outside gable over stone,concrete lintel and block. Any other time I do this, I dampen the Concrete heads to get rid of dust for better adhesion for render.

While building this stone, I've removed the plastered reveals already in place but the reveal on underside of concrete head was boast, ALL them! The guy working with me who's a stone mason and plasterer as well saying better to use unibond pva on head when we throw the reveals on! In all my time Plastering, I've never used PVA outside. Remember reading on hear before and someone mentioned it years ago, PVA can become live again and losseing up the render but this other guy is adamant we should use it.

I'm sticking to my guns and doing it my way but what yous think, should I listen to him?
 
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hail hail said:
View attachment 12185 View attachment 12184 View attachment 12185 View attachment 12184 View attachment 12184 Will be doing my reveals soon on an outside gable over stone,concrete lintel and block. Any other time I do this, I dampen the Concrete heads to get rid of dust for better adhesion for render.

While building this stone, I've removed the plastered reveals already in place but the reveal on underside of concrete head was boast, ALL them! The guy working with me who's a stone mason and plasterer as well saying better to use unibond pva on head when we throw the reveals on! In all my time Plastering, I've never used PVA outside. Remember reading on hear before and someone mentioned it years ago, PVA can become live again and losseing up the render but this other guy is adamant we should use it.

I'm sticking to my guns and doing it my way but what yous think, should I listen to him?
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Tell the stone mason to stick to his stone
 
I've seen people roll pva externally before dashing and always wonder what else these chancers are doing wrong.
 
I have used week pva to kill suction on outsides and never had any problems. I even still use it on insides . My god i am a wrongun. Oh well just off for a ride around in me van and go and do some tappin.:whistle:
 
I used sbr mixed with cement for something similar lately,I think it was Evo stick.Render over it while still tacky.A lot of engineers that inspect work in Ireland don't know sbr is.
 
Nicm said:
I used sbr mixed with cement for something similar lately,I think it was Evo stick.Render over it while still tacky.A lot of engineers that inspect work in Ireland don't know sbr is.
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Suprising really given the amount of traditional cement work still fine there I thought it would be as common as milk!
 
I've used lots of pva Sbr on exterior render.
I always apply one coat the day before at 5/1 then a neat coat as I apply and never had a problem
 
Waterproof pva won't remulisfy if water gets behind render (hairlines) it hangs longer and goes very tacky for ages, brilliant stuff. Concrete lintels or glossy paint waterproof pva with an sbr scat coat. Bit overkill....but no callbacks.
 
@hail hail . I see n your pics the old render has a reddish stain on the right hand side. I've seen a lot of this in Ireland, mainly from Longford to the West. Often wondered what it is ? I'm thinking it may need an anti fungicide treatment or similar ?
 
irish_spread said:
@hail hail . I see n your pics the old render has a reddish stain on the right hand side. I've seen a lot of this in Ireland, mainly from Longford to the West. Often wondered what it is ? I'm thinking it may need an anti fungicide treatment or similar ?
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Yeah we get it all over houses here in West. I forget what the name of it is! I've a mate who removes this with some liquid stuff he gets in from Germany. He's getting a good turn at it too.
 
Nicm said:
I used sbr mixed with cement for something similar lately,I think it was Evo stick.Render over it while still tacky.A lot of engineers that inspect work in Ireland don't know sbr is.
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Agree! TBH, never used it myself. Even phoned builders yard looking it here before and had to explain to them what it was.
 
irish_spread said:
@hail hail . I see n your pics the old render has a reddish stain on the right hand side. I've seen a lot of this in Ireland, mainly from Longford to the West. Often wondered what it is ? I'm thinking it may need an anti fungicide treatment or similar ?
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I was told that the red staines come from the cement.
It was crushed by iron balls or rollers years ago and the red is bits of rust from the iron.
This isn't a fact it is just what I was told!!!
 
Jerseyboy said:
I was told that the red staines come from the cement.
It was crushed by iron balls or rollers years ago and the red is bits of rust from the iron.
This isn't a fact it is just what I was told!!!
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I don't think it's that. I've seen houses less than 10 yrs old with it. Really bad on western coast though, it even bleeds thru the paint
 
beader said:
As a teenager i would get complaints from my mum about these when she had to wash my bed sheets.
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My granny slatted me one morning and told me to stop blowing my nose on my socks when I stayed in hers for awhile lol. Felt embarrassed to f**k. She knew rightly what it was but it was her way of telling me stop that filthy carryon lol. Just to lazy to go get some big roll :(
 
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