Spray foam covered with vapour barrier? Etc – GreenBuildingAdvisor

Recently had some closed cell foam installed on my ceiling, which I instantly regret. It has been 7 days and it still smells.

Besides that concern, I have a couple insulation questions. I’m in southern Ontario, zone 5 I believe. 

1. they spray foamed over the window and door headers and then batted the wall cavities. Then they applied the vapour barrier. I just clued I today that maybe that’s why it smells because it can’t offgas and now it could be stuck in the studs. And aside from that, is it Ok to do double up? Probably only a thin layer though. 

2. it’s a slope roof and had no ends built in so they used batts to close the holes and sprayed on those. I was told I can remove them if I want. We were not planning venting the soffits as it’s supposed to be a hot roof. Should we vent in case there is any issues with the spray foam to allow for moisture to dry? Should we keep the batts there?

3. It is a space where one section is not heated and storage and divided by an interior wall to heated space. The entire roof has spray foam and batts on exterior walls with the vapour barrier. VP also on warm side of interior wall. Does this make sense to VP all but the cold side of the interior wall?

this all passed inspection but the more I read the more I question everything. 

thanks