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Old Mod
I believed that minimum screed depth would be the 40mm plus the depth of the pipes, making minimum depth around 60mmFibre Screed - Fibre Screed - [DLMURL="http://www.premiermortars.co.uk/screeds/fibre-screed"]Fibre Screed - http://www.premiermortars.co.uk/screeds/fibre-screed[/DLMURL]
And if laid on insulation it would need to be 90mm
But of course I could be wildly wrong 🙂
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