Hi for modelling ground floor slabs is there any point in modelling the hardcore and blinding assuming it is beneath the radon barrier i.e. outside the hygro envelope?
I am looking at a concret slab with 400 - 500 mm of EPS insulation and then a radon barrier.
I am using the 500 mm reference data from Holzkirchen as suggested by Manfred.
Surface Transfere coefficients 'Basement'