I never used the one from Mapei but is that one that needs to stay on for 30 minutes to 2 hours?

Lorne Greenberg
 
Fabra-Cleen
"Getting all the dirt since 1949"
lorne@fabracleen.com
www.fabracleen.com
212-777-4040, 718-776-3564
516-377-0993

On Mar 8, 2014 2:12 PM, "Stephen Webb" <stephen@newlifemarblerestoration.com> wrote:
 Customer has severe epoxy (mapei) grout residue in limestone pores. have tried the grout manufacturers epoxy grout haze remover and K&E coating remover with no effect. Before we grind is there anything else we should try?
Thanks
Stephen

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