Hello!
You must have long finished with the vapor barrier ;-) but for others who might be wondering, I just want to say that it IS important that the vapor barrier is tight. Especially in sensitive areas for condensation, such as thermal bridges and other places where the risk of condensation problems is higher (cold construction, a lot of steam in the air, sensitive materials, etc.). The reason I write this is that the vapor barrier has two functions: One is to prevent convection, i.e. to stop moisture from being carried by air movements into the construction and potentially becoming a problem. But for convection, small holes in the vapor barrier are not a major issue. However, with moisture diffusion, it is more sensitive. Moisture diffusion is more localized, so one can try to assess how much of a risk those holes pose.
Hmm.. not sure if that made things clearer. :-/
