Hello everyone,

I am trying to find a better product for parging than something like King Parging (link below). We need to protect the Insulated Form Concrete walls from above grade to bottom of cladding. Perhaps something containing fly ash?

Any comments will be greatly appreciated.

Thanks,

EM

http://www.homedepot.ca/webapp/wcs/stores/servlet/CatalogSearchResultView?D=902204&Ntt=902204&catalogId=&langId=-15&storeId=10051&Dx=mode+matchallpartial&Ntx=mode+matchall&recN=0&N=0&Ntk=P_PartNumber

Posted By: CWattersSomething lime based perhaps?

http://www.lime-green.co.uk" >http://www.lime-green.co.uk

PS: Although CO2 is produced in it's production some CO2 is absorbed as it hardens.

My experience is that a portland-based mix sticks best to foam (vs hydrated lime). A mix of 3 parts fine sand and 1 part typeN cement has enough portland to stick well and enough lime to avoid shrinkage cracking that is more likely with a 100% portland mix.

Avoid using sugar as a set retarder; tried it once with half a wheelbarrow of parge mix when I went in for supper. 3 months later most of it has lost its bond and fallen off the foam board.

-Ralph