What is Roof Ventilation?

Roof ventilation is a system that allows air to circulate through the attic, preventing heat buildup in summer and moisture accumulation in winter. This airflow is typically achieved using a combination of intake vents (placed at the soffits or eaves) and exhaust vents (positioned at the roof ridge or gables).

How Roof Ventilation Enhances Energy Efficiency

Regulates Temperature

• In summer, hot air can accumulate in an attic, causing temperatures to soar above 150°F. This heat can transfer into living spaces, making your air conditioner work harder to maintain a comfortable indoor temperature. Proper ventilation allows excess heat to escape, reducing cooling costs.
• In winter, ventilation helps maintain a stable attic temperature, preventing uneven heating and reducing the risk of ice dams forming on the roof edges.

Reduces HVAC Load

• A well-ventilated roof minimizes the burden on your HVAC system, leading to lower energy consumption. With less heat trapped in the attic, your air conditioning system doesn't have to work as hard to cool your home, resulting in lower electricity bills.

Prevents Moisture Damage

• During colder months, warm indoor air can rise into the attic and condense on cooler surfaces. Without proper ventilation, this moisture can lead to mold growth, wood rot, and insulation damage. A balanced ventilation system allows moisture to escape, preserving the integrity of your home's structure and insulation.

Extends Roof Lifespan

• Excess heat and moisture can accelerate roof deterioration, leading to premature wear and tear on shingles, underlayment, and decking. Proper ventilation helps prolong the life of roofing materials, reducing the need for costly repairs or early replacement.

Signs of Poor Roof Ventilation

If your home has inadequate roof ventilation, you may notice:

• High indoor temperatures, especially in the upper levels of your home
• Unusually high energy bills
• Ice dams forming along the roofline in winter
• Mold or mildew growth in the attic
• Peeling paint or warped wood near roof structures

Choosing the Right Ventilation System

Griffintegrity Roof & Remod, Inc. offers expert roofing solutions, including ventilation assessments and installations tailored to your home’s needs. The most common types of roof ventilation systems include:

• Ridge Vents: Installed along the peak of the roof, allowing warm air to escape naturally.
• Soffit Vents: Located under the eaves, these vents allow cool air to enter the attic.
• Gable Vents: Placed on the exterior walls of the attic, these vents promote cross-ventilation.
• Powered Attic Fans: These use electricity or solar power to enhance airflow when natural ventilation is insufficient.