climate zone 7 winnipeg. wall from the outside in: acrylic stucco, 5/8" of portland stucco, typar, 2 layers of 15lb felt, 1.5" fiberglass faced polyiso, typar. 1/2" plywood, 2x6, r22 roxul, membrane, 1/2" drywall. wondering what type of paint I should use to premote more drying to the inside of the house. will normal laytex be fine? or should I be looking at other options also in shower areas that will receive a water proofing membrane like KERDI should I include membrane behind the drywall? kerdi acts as a vapour barrier in its self. or will leaving the membrane behind the wall be fine. thanks

wish I knew about this site before taking local advice to adding 1.5" of foam to the outside. I hope it being polyiso with no foil facer helps it dry to the outside better. but all the recent articles about cold sheeting I hope I am not completely screwed and have built a 15-20 year house that will have mold issues

Do a good job of air sealing the wall cavilty. MemBrain asks to overlap 3 in. I overlapped at least that, I also taped all those overlaps and over some of the staple holes. I also sealed the inner stud cavity really well which would create less of a pressure difference between the inside/outside so less air would be pulled into the cavity. At least that's my theory. I spent a good two weeks doing nothing but airsealing everything everywhere.

Note: I have an air exchange unit on the house to interchange the inner/outer air. I don't need walls with holes in them to refresh the air in the house.

I'd also monitor and control pressure (and humidity) for the entire house. You want slightly negative when heating and slightly positive if A/C is on. Humidity can be kept as low as you can tolerate.

I'd use latex paint for better drying to the interior.