getting grout off slate tips

881 Views 3 Replies 2 Participants Last post by ryansdiydad, Mar 26, 2016

ryansdiydad

Discussion Starter · Mar 23, 2016

hey... put down some 8x16 slate and applied two coats of 511 sealer and enhancer prior to grouting. sealed in sections so I could apply and wipe excess within 3-5 minutes as specified.. did second coat 1-2 hours after first.. I tested the sealer in a few spots and water beaded up and it some dirt on the floor came right up... Sealer was applied 24 hours before the grout..

Grout was applied last night... followed manufacturer instructions to the letter.. but I can't seem to get the tile as clean as I would have expected... So what gives? I know slate has nooks and crannies which doesn't help.. but there are other spots that seem to be holding on to the grout.. do I just need to keep at it? Any tips to get it completely cleaned up finally?

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ryansdiydad

Discussion Starter · #3 · Mar 24, 2016

Got a couple nylon scrub brushes that got most of it up.. Still some persistent spots by some of the cleft areas.. Going to pick up some alkaline haze remover and see if that helps with the rest of the cleanup..

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ryansdiydad

Discussion Starter · #4 · Mar 26, 2016

Ended up getting some sulfamic acid and that with the scrub brushes took care of it... Depending on where you look sulfamic acid is or isn't recommended for slate so test it on a leftover piece or an inconspicuous place... It seemed to do no harm to my floor.. Also be prepared to wipe it or mop it won't fresh water once or twice...

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getting grout off slate tips

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