To ask the other part of question: How bad is it to have wet insulation? that didn't get asked... How do you deal with homes that are in high wind and snowy areas which are susceptible to snow infiltration?
To give some background. Some time after the house was first built (it is about 35 years old), the previous owner had some problems with "leaks" in the house due to snow infiltration through vents in the soffits. It would just pile up in the attic. Later it would get warm, melt and end up as a leak.
The previous owner solved this by closing off the soffits on one side of the house where the wind typically blows the hardest. There are still some vents on the other side. After doing some reading, it seems that this might not be an optimal venting solution (possibly not even code), since a cross ventilation is desirable/required.
Some other notes:
- Roofing was replaced after about 30 years. At that time there wasn't a sign anywhere of rot due to moisture buildup.
- House is in NYS. So we get plenty of snow, cold, and wind (50mph isn't crazy).
- In my time there, I have witness snow piling up in other places, such as coming in the little cracks around/under the garage door. Get a small snow pile inside in the morning.