Limestone flags - cement staining under sealant

Discussion in 'Builders' Talk' started by Tanya Trainer, Oct 4, 2020.

  1. Tanya Trainer

    Tanya Trainer New Member


    I've just had my garden flagged with black limestone, it's been sealed with Sika black limestone sealant.

    Some of the flags are okay but by the gate, they're heavily cement stained, and some of the grout has changed colour (from grey to white!) Here's a couple of photos...

    What can be done with these please?

    Thank you
  2. Tanya Trainer

    Tanya Trainer New Member

    Is this in the right place ?

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