Soot stains

[thebigfella]

Alright boys & girls is there anything I can put on a chimney breast to stop soot stain coming through before skimming, customer had a plasterer do up stairs and he sealed the chimney before but it's still bleed through?

 

[leebo02]

has the chimney breast been removed,, you just setting or float and set

 

[Jurek]

dunno. cow dung? batten and board? sbr and sand and cement? membrane and board?

 

[malc]

dot and dab a board over the chimney breast

 

[thebigfella]

Can't do much because fancy coving just re skim but didn't know if there was something I could paint on? Would a stain blocker work?

 

[Fatarm]

Done this before....hack off,membrane and replaster or dab on boards and skim...costly but effective..but many go for other cheaper,come back price

 

[Fatarm]

Can't do much because fancy coving just re skim but didn't know if there was something I could paint on? Would a stain blocker work?

No

 

[thebigfella]

No

[emoji20]

 

[thebigfella]

Done this before....hack off,membrane and replaster or dab on boards and skim...costly but effective..but many go for other cheaper,come back price

Yeah guess that's the only option [emoji106]

 

[BigK]

Jurek is right, cow dung if you've to float it

 

[Fatarm]

How much you payin for cowshit? Travis quoted me 85 quid a bag? Robbin bastads

 

[radford]

Belt and braces job this one soot is hygroscopic (I think that's the word) it keeps sucking up water in the atmosphere and reactivating. Just skimming will reactivate it. Maybe a hit and miss vent in the chimney if it is redundant. Salt inhibitor etc.

 

[S a plastering]

I normally bleach solution with a wire brush then sbr over then put a sand an cement scratch cost with sbr in let it dry for a couple of days then your good to go worked for me in the past

 

[Simon73]

Zinsser 123 in red can, when dry put a coat of plasprime or equivalent on it, have done this several times after it was specified by an architect.