Joined: July 2004
||Posted: 20 May 2017,14:45
As Sean says, get rid of all the old cobble lock (Irish for 'block paving') and concrete, then get a proper sub0base and your chosen flagstone laid as shown on the main website.
Can't say with any certainty just where the DPC is in your photie, but, my experience with Irish building techniques suggests it's *probably* 150mm below the render rail. It *should* be coincident (ish) with internal floor level.
Depending on where you are in Dublin, Tobermore Paving Centre up near Swords, Timmy Tuohy's Natural Stone Yard in Ashbourne, or Balgriffin Patio Centre in Malahide are usually good with advice, and the same with Cabinteely Patioo Centre on the south side.
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