SLC hairline cracks

Discussion in 'Tilers' Talk' started by Rob DeS, Sep 8, 2020.

  1. Rob DeS

    Rob DeS New Member

    545C4CD2-597B-4E11-9BE4-CE756713C6DB.jpeg Reinforced osb subfloor.
    Primed osb with manufacturer suggested primer.
    attached metal lath, stapled every 3 inches.
    Mixed (too much water I’m thinking) slc and poured.

    everything went well, minus not having area as well dammed up as I thought.

    9 days have gone by, and I’m now seeing a hairline crack. I can’t feel it when running finger, but it’s there.

    This is a powder room, should not see much water action.

    planning to tile this weekend, do I need to stop and pull the slc?
    Last edited: Sep 8, 2020
  2. Burtbaggy

    Burtbaggy Member

    There’s a number of reasons why this may have cracked, but the upshot is that this is a hairline crack & shouldnt cause any problem. I assume you’ll be using a flexible tile adhesive when you tile?
  3. Rob DeS

    Rob DeS New Member

    Haven’t picked out yet. So flexible tile adhesive is suggested?
  4. Burtbaggy

    Burtbaggy Member

    Yes any type of floating floor & can have a small amount of movement needs to have flexible adhesive. I’ve always found Mapei products pretty good.
  5. Rob DeS

    Rob DeS New Member

    Wasn’t planning on a floating floor...
  6. DIYDave.

    DIYDave. Screwfix Select

    Was it a flexible SLC you used ?

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