We recently hired a contractor to renovate our home. To make a long story short, we have a vented attic system, where true vents were installed along the exterior between the roof rafters. Then open cell spray was applied, with a vapour barrier poly then applied. Is the insulation at risk of moisture because of the true vents being applied?

In a couple of our attic spaces, we have the same scenario, except instead of applying the vapour barrier against the foam, the poly was applied to the inside wall, and the attic cavity was completely filled with blown in insulation. We were told that this had to be done because it was too tricky to seal the foam directly.

In both scenarios, what are the risks for condensation ? Are there other issues that we should be aware of?

Thanks