Byggmax polystyrene adhesive dissolves in the rain today! Need to glue with another adhesive now. Which one?

[ohlgren]

Well, I'm not going to try to disagree with you. I really don't know much.

Anyway, I built a little more old school, kind of like the pictures that "Mark i skåne" posted, but not with light frames in the structure then.

And ...

And I've seen some houses where they've plastered directly on the cell plastic as an outer wall, so how wrong can it be? ...

(Sorry, couldn't resist ... )

To get it right without metal, the fascia board must be completely outside the base and extend a bit below the base. Only then can you be sure that moisture cannot get in that way. But then you have to expect that the facade will protrude panel+battens+fascia board (22+34+12) = 68 mm. You can reduce the battens, of course, to maybe 20. That is, 48 mm protrusion.
I don't think I'll like the look of the protrusion combined with horizontal paneling, so I choose to go with metal flashing. The construction company I have doesn't think the facade lining up with the base is strange at all, so I'll keep my fingers crossed and trust them.

 

[ohlgren]

To clarify the answer to the original question.

I scraped and cleaned off Byggmax dissolved foam adhesive.

Then glued with Illbruck PU700 stone adhesive. http://www.tremco-illbruck.se/produkt/03805_index.html
Worked great, can be recommended. Easy to apply, economical. Dried in 10-15 minutes despite damp weather. Works well on damp foam (actually requires you to moisten the surfaces a little).

 

[Pumba]

I used foam adhesive when I glued the insulation board to my slab. It's just a matter of running a couple of beads, placing the insulation, and rubbing it back and forth a few times, then the foam won't expand, and it holds like a rock.

You might as well replace Byggmax insulation adhesive with a used chewing gum...