Cavity lean mix

Postby Dorset » Sun Apr 05, 2009 9:19 am


I have to put a lean mix into the bottom of the cavity 225mm below DPC.

I am unsure on what a lean mix is. is it sand and cement or ballast and cement and what ratios are used.

Your help once again is mucho appreciated
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Simply Build It

Postby elwood » Thu Apr 09, 2009 11:12 am


When ordering ask for concreting ballast.

A lean mix is a dry weak mix

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