admixtures

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christ

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what admixtuers do u lads use for internal float and set.... got a chimmney breast to do on the weekend. many thanks lads
 
when rendering the inside of the chimney breast... is there anything i need to do,, as it gets really really hot.

also do u need to pva S&C if i use plastesizer.
 
I use Febmix DH and one small cap (off 5ltr can) of waterproofer per large mixer full (25kg cement:20 shovels of sand). There's no need to PVA before setting sand and cement. Don't render the chimney breast while it's still warm, and don't let them light the fire again until after the S&C has had a chance to set and cure.
 
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