Tarmac topflow screed A with Lignite

Discussion in 'Site Problems' started by Jamie gaskins, Sep 3, 2022.

  1. Hello,

    can any one help with a bit of advice?

    we have had Tarmac topflow screed A poured and as it has dried lots of what we think is Lignite has popped out the surface.

    we are laying Amtico flooring over the top and concerned it may cause issues down the line.
  2. dazlight

    dazlight Super Moderator

    Needs grinding then a coat of ardex RE3 epoxy primer sand blinded , then smoothing compound

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