What is a gable vent?

A gable vent is an opening installed in the gable end of a house, usually near the peak of a peaked roof, to help move air through the attic space. It is typically a passive vent, meaning it relies on natural airflow rather than a fan.

Quick Scoop

A gable vent lets hot air escape and cooler air enter, which can help reduce heat buildup and moisture in the attic. It may be round, triangular, rectangular, or another shape, and many homes have them on both ends of the roof so air can move across the attic more effectively.

How it works

• Warm air rises in the attic and can leave through the vent.

• Cooler outside air can enter through the opposite vent or nearby intake openings.

• This airflow can help lower moisture, mold risk, and overheating.

Worth knowing

Gable vents are often found in older homes and can sometimes be decorative as well as functional. Some homes use them alongside soffit vents, while homes with ridge vents often do not also have gable vents.

TL;DR: A gable vent is a roof-end opening that helps ventilate the attic by letting air flow in and out naturally.

[1][5]