You Have To Have Proper Ventilation
No amount of insulation can fix these problems. In short, you have to have proper ventilation. The ventilation of a home must be in balance. You must balance intake with exhaust, otherwise they compete with one another and you have no air flow. No airflow means serious problems. Improper Air Flow In An Attic WILL lead To:
Ice Dams
Moisture Build Up
Wood Rot
Mold & Mildew
Damage To Both The Interior And Exterior Of Your Roof
“Cooked” Shingles”