Stop by Morristown Lumber and pick up the Cobra Exhaust Vent for Roof Ridge. Effective attic ventilation is critical for a long-lasting roof! A properly balanced attic ventilation system will help to: remove excess heat and moisture to protect your roof from premature deterioration, prevent roof rot in your attic or roof deck, and minimize peeling and extend the life of exterior and interior paint. Plus, it also limits the growth of harmful mold, safeguard your attic possessions against mildew damage, guard against ice damming in harsh winter climates, and promote energy efficiency by reducing excessive heat in your attic.