every winter when it snows my breathable roofing felt gets covered in condensation. To the point where it runs down the rafters and drips onto the stored item in the loft. (Also making the loft ladder and any non treated wood damp with mild1ew.) I assume the breathable felt does not work as the snow is acting as a water barrier?.. The eaves have no vents as it is a 'sealed roof'.. Would your product fix this issue? Am I destroying the sealed roof concept (assume its for insulation reasons?