Dry lining with solid bed adhesive?

[SuperPav]

Just a thought, when I was using insulated tiling boards on a brick wall in the last property, the manufacturer said these should be installed using a full bed (10-20mm notched trowel) adhesive rather than Dot and Dab.

 

Can normal PB not be installed the same way with a 20mm trowel and a solid bed, to avoid any of the issues of airtightness? Or is it just that it is so costly that it's not worth doing and a parge coat is a simpler way of getting to the same result?

[nod]

No ten mill isn’t enough thickness