Would not a dpm just under the slab tend to wear out rather fast letting all
those problems reoccur?
Brian

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"Robin" wrote in message
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On 29/09/2019 13:17, Andrew wrote:
On 29/09/2019 10:23, Tricky Dicky wrote:
Logic would suggest that if you have a DPM below the concrete then the
only way out for the moisture is through the top surface. I believe
curing time for concrete is 28 days.

I have not consulted this site in a while but checking it out may
definitively answer your question;

http://pavingexpert.com/

Richard


I always thought proper drying time was a month per inch of concrete,
i.e. longer than you expect.

You can put a secondary dpc on top of the slab.

where then would the moisture go? (I thought that was why DPM above the
slab was an /alternative/ to DPM below it.)

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