OK what thickness of Ardex NA (is it Ardex or Arditex?) for both use cases: as a 'sealant' and a DPM sandwich?
Ardex NA is pricey though, if all I'm using it for is to seal in some dust. Can you recommend something cheaper that will achieve the same...
They say it takes a lifetime for the disease to show up, and I'm old enough that breathing in 1 or 2 fibers probably won't make much difference....
I'll probably go with the underlay then. If there are damp problems later on, lifting up the laminate and installing a proper DPM/screed sandwich...
Forgot to mention that this is (obviously) the ground floor!
The subfloor in my house is a concrete slab with no DPM. It originally had Marley tiles stuck down with bitumen 'glue', but many of them are...
