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• PRO

  philip porter October 6, 2014 at 3:21pm

  thanks for your response axeljk all good info...
  ...so if you do a saw cut do you still use re-mesh?
  and imagine porcelain tiles over the concrete - these are always going to crack on the sawn joint aren't they. So I'm thinking this would require a visible movement joint in the tiles every 4 m filled with suitable flexible filler. Would you agree & have you done this before?
  I remember doing a concrete base for resin bound round a swimming pool and we put expansion joint round the pool edge & crack inducers every 4m... still used re-mesh.
  cheers
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  Colin Hunt October 6, 2014 at 4:51pm

  I am not in a position to give you technical advice Phillip, but what I can can say is for you not to take any chances with this job and asking for general advice on here shows you are thinking that way already. Whereas paving will normally show an expansion crack though the joints and can be easily repaired, not so with tiles, where cracks will often transverse across the tiles. There are expansion joints made for such tile work.
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  Kieran Ray October 6, 2014 at 5:36pm

  I reckon you should head over to the brew cabin (part of the paving expert site) the guys on there now a lot about paving and concrete.
• PRO

  philip porter October 6, 2014 at 9:27pm

  thanks for the advice - yes the brew cabin sounds like a good idea!
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  Simon Smith October 6, 2014 at 11:34pm

  you can get specialist tile expansion joints which are laid like a tile stop bead.

  You should perhaps rethink and manipulate your bay size to reduce these if possible as they will be a very obvious visual break and disrupt any pattern you are laying.
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  Ed Fairman October 7, 2014 at 5:20pm

  The pattern imprinted concrete companies recommend you line up your contraction joints with an existing joint in your work and then fill with their mastic product. I would have thought this would work in your case using the correct products for the job.