I have a bit of an insulation question. We had too much going on at once- long story short- The Framer put Tyvek on the OSB with the 1/2" foam sheeting over it. Then the roofers and the poured porch came and they put their flashing OVER the foam. I think it should have gone under the tyvek so water does not travel behind the siding and come into the house as it is now.

The question- can I put a second layer of some sort of housewrap over the foamboard in these areas? Will it breathe?(is it wrong to sandwich the foam between tyvek?)

Most expensive - I could just put another layer of foam over the current layer in these areas.

I wouldn't feel good about just taping the flashing or cualking.

Tyvek isn't a vapor barrier, so there would be no problem to adding another layer.