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perlite in hydraulic lime/sand render


Duckman

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Hi all,  has anyone any experience of inclusion rates of perlite in hyd lime/sand render?

application is internal wall insulation pre bonding coat, pre wood fibre insulation.

 

the notion is to lift/soften the dew point and raise U by a small degree as am achieving fairly low value with just the wood fibre board, however have plenty of `U` to trade on roof and floor and quoted L15.1 b. 

 

Thanks, Nick

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Welcome.

 

Hmm, what's an  inclusion rate  

If I'm asking that then the direct answer to your question is - no - . But I'm interested in the answer.

How about chucking a handful of perlite  in the normal  mix?

 

Our residents chemist ( a certain Mr Harris) will be along soon.

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