Lomanco Ventilation AwarenessSharing the Knowledge of Experience!

3 Must Do Steps to Attic Ventilation

Determining how to ventilate a home can seem like a daunting task if unfamiliar with ventilation systems, but here at Lomanco we have “3 Must Do Steps to Attic Ventilation” to help. The three must do steps listed below are common to all ventilation systems; these steps can also be found printed on our instructions and product boxes. 

3 Must Do Steps to Attic Ventilation

1. Install all exhaust ventilation at the same height within a common attic area.

It is very important to install all exhaust vents at the same height or level - installation of exhaust vents at more than one level on a roof allows the upper exhaust vents to pull air from lower exhaust vents instead of the intake vents. This can cause damaging weather infiltration to a home or structure.

Intake air must come from intake vents located near the lower part of the attic space to properly ventilate the total attic area and eliminate weather infiltration.

2. Install only one type of exhaust ventilation within a common attic area.

Exhaust vents pull air from the easiest intake source; therefore vent types cannot be mixed. The use of different types of exhaust vents could make one of the exhaust vents act as intake for the other. 

As previously stated in step one, intake air must come from intake vents located near the lower part of the attic space to properly ventilate the total attic area and eliminate weather infiltration.

3. Install a balanced system of intake and exhaust ventilation.

50% intake ventilation – Intake vents located near the lower part of the attic area are required to balance out a ventilation system.

50% exhaust ventilation – Use a Lomanco ventilation selector guide or the calculators at lomanco.com to determine the number of vents needed to properly ventilate an attic to the ventilation minimum property standards. 

To learn more about proper ventilation, be sure to read our next post, Proper Ventilation Conserves Energy.