Went on site to check new build today especially with the weather. Nearly died four big patches of wet upstairs ceilings. Climbed into attic and roof vents facing north and east has a good bucket of snow lying on the insulation beneath each vent. Happy enough no leaks. Anyone experience this before? Is there any type of insert I could use to block snow blowing in again? I understand the need for air circulation in attic area. No problem over the past months with rain at all. Windy site on top of hill.