When constructing a new house, you must always have roof vents, which are also known as attic vents. Having roof ventilation in your house ensures that there will be a good amount of airflow which is a must for a sustainable building. Roof ventilation plays a vital role in the efficient functioning of a home.

How Roof Ventilation Works:

Roof ventilation involves intake and exhaust vents. These are useful in ventilating steep-slope roof assemblies in order to enable proper inflow of the outside air and let household air exit through the attic or exhaust vents.

In simple words, roof ventilation works when there is proper airflow. There are 2 main methods to create airflow within an attic:

1. Mechanical – with the mechanical method, a power source is needed to help the airflow.

2. Natural – with the natural method, the stack effect and the wind effect work together to naturally circulate air.

Air intake vents must be located in the roof assembly’s lowest eave while the exhaust vent(s) must be located near the roof’s assembly peak. This specific roofing vent configuration encourages air inflow through the low points and exhaust at high points and takes advantage of natural convection. Moreover, this specific configuration is also beneficial in expanding the life of the roof by providing proper functioning of the heating as well as air conditioning (HVAC) systems.

Avoid This Mistake While Installing Roof Ventilation During Home Construction:

The most common mistake generally made by homeowners is not installing enough intake vents. As we know, intake vents are quite important in the roof ventilation system to maintain a balance between the inflow and outflow of air.

Choose from a wide range of intake vents that would be suitable for your house…

• Edge-of-roof intake vents

• Shingle-over intake vent

• Continuous soffit vent

• Rectangular under-eave vent

• Drip edge vent

How Is A Roof Ventilation System Beneficial?

Having roof ventilation allows the inflow of cool and dry air at the edge of the roof while thrusting out warm or humid air through exhaust vents. In the absence of roof ventilation, there would be an insufficient flow of air which in turn would lead to the growth of mold from locked-in moisture.

Roof Ventilation Maintains Proper Air Circulation:

When you shower, where does the warm air go? Typically it would rise toward the attic. Then that warm air combines with cool air, gets condensed, and wets the framing of the roof and the insulation system. The continuous buildup of moist air can lead to the growth of mold on the roof rafters. This is very dangerous as it might cause extreme respiratory issues and it also leads to structural damage to the home’s roof. Therefore, you must ventilate your house with proper roof ventilation in order to prevent awkward moisture and heat issues.

Reduction In Electricity Bills: 

With proper roof ventilation, you allow heat to escape efficiently from the house and this directly reduces the workload on the air conditioner. Hence, you get lower electricity bills.


Roof ventilation helps maintain your home and keeps it comfortable. Generally, well-designed and properly installed roofing vents provide moisture control and help regulate temperatures inside the home. When accompanied by proper insulation, roof ventilation protects a house from unnecessary damage.

Need help with roof ventilation? Arko Exteriors can be reached at 763-434-2756.