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Understand How Roof Vents Work: Types and Purpose Of Roof Vents


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What is the purpose of having roof vents,

First, they aid the roof and house to function the way it’s supposed to. Roof Vents come in different sizes and shapes; and allow your home to breathe properly.

If you are getting a new roof installed its always good to choose the right style of the vent based on the ventilation of your loft and the look you want.

To do this you will need to understand the different types and purpose of roof vents.

Types Of Roof Vents
There are two types of ventilation systems. Each of these has different styles of roof vents you could choose from.

The 2 types of roof vents are:

1. Active roof vents
2. Passive roof vents

Active Roof Vents

The major function of all active roof vents is to pull air in with the intake vents and push it back through the exhaust vents.

There are four major types of active roof vents:

Solar Powered Vents

Those vents look like power vents, but, as the name implies, the sun is their source of power. As a result, they function effectively from the standpoint of an energy saver, but the vent turns off immediately after the solar-powered battery starts charging.

Power Vents

The power vents are circular and have very low profiles, mostly seen on roofs. These vents are installed close to the top (ridge) of the roof and use electricity to take out hot air from the loft. It’s advisable to use a humidistat to run your power vents during winter.

If not, the humidity level will increase in your attic, causing condensation and shortening the lifespan of your roof. Note that power vent motors often fail. So, you must be prepared to replace them whenever they fail.

Turbine Vents

Turbine Vents function is to use a drawing effect through heat rising (convection) to move the air around the loft. When the turbine vent is installed correctly, it helps the air in the loft to move around at least 10 to 12 times per hour.

However, since turbine vents are open-aired to the loft and have slats on them, some think that insects, rain, and snow can get through them. This isn’t the case as they are constructed so that nothing can get inside

Active Ridge Vents

The ridge vents are cut to fit the roof’s ridge and run the whole length. This roof vent is popular because it isn’t easily noticeable from the ground. However, the major disadvantage of using this vent is that there’s no filter to prevent rain, debris, snow, and insects from entering the attic.

Types Of Passive Roof Vents

The passive roof vent uses natural forces like wind to move air through the attic. They do not have any moving parts and are low maintenance and dont create any noise. The major types of passive vents are:

Gable End Vents

These are wooden vents installed on the exterior wall of the loft, just below where the two slopes of your roof meet. The gable end vents depend on the wind from outside to move air in and out of the attic.

Static Vents

These vents appear as little boxes on the roof. Their function is to allow heat to escape the roof So, as the heat in your attic rises, the hot air is pushed away through the vents

Passive Ridge Vents

This vent is similar to its active version that is cut into the ridge and runs the whole length of the ridge. The only difference is that this passive version doesn’t have a chute that serves as a channel for air to flow. A downside of this type of ridge vent allows rain, insects, debris, etc., to get into your loft

In Summary – The purpose of having roof vents:

No matter the kind of roof vent you use for your roofing solution, its important to consider keeping your loft ventilated. Its great for clean airflow in your property and It could help with the longevity of your roof and also reduce your costs in the long term.

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Call us now for a free quote and let’s start discussing your roofing requirements!

Tel: 07397 538781

Address: Unit 1a, Docks link, B M B Industrial Park, Wallasey CH44 3EQ

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Wareing & McKenna.  Roofing Specialists for the Wirral and surrounding area