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Louvres are a common feature in many homes and commercial buildings. They help in ventilation and shading. If you need new louvres or have old louvres that need repair, contact us today.

Introduction: The purpose of louvres.

Louvres are a common architectural feature found on the exterior of buildings. They are used to control air circulation and light infiltration into a building. The purpose of louvres is to direct airflow and protect the interior of a building from the sun and weather. Louvres also help to improve the appearance of a building by adding texture and colour.

Louvre Types:

Louvres are broadly classified into Flat, Ogee, Laminated and Slatted Louvers which are briefed below.

Flat Louvers:

Flat louvres are the most common type of louvres and work by directing airflow. A flat louvre can control light and improve appearance. The purpose of Flat louvres is to direct airflow.

Ogee Louvers:

Ogee louvres are a type of louvred window with a distinctive ogee shape at the bottom. The purpose of this type of louvre is to improve the appearance and add texture. Ogee louvres can be used to add colour and texture to a building or offer protection from the elements.

Laminated Louvers:

A laminated louvre is made from multiple layers of metal which are stacked onto each other. The purpose of this type of louvre is to improve appearance. This louvre can be used to add texture, colour or shape.

Slatted Louvers:

A slatted louvre is similar to a flat louvre in that they both direct airflow. The difference is that the slatted louvre has a series of small openings at the bottom. The purpose of this type of louvre is to improve appearance. This louvre can be used to add colour, texture or shape.

Types of Louvers: Fixed, adjustable, and operable

Finally, you need to decide where the louvres will be installed: on the roof, on the walls, or in between the windows. This decision will depend on factors such as budget and available space.

Fixed louvres are permanently attached to the building and are not adjustable. They are typically used for aesthetic reasons or to control airflow into and out of the building.

Adjustable louvres can be opened and closed to adjust airflow. This type of louvre is often used in HVAC systems to control the temperature and humidity inside a building.

Operable louvres can be opened and closed to allow or restrict airflow. They are commonly used in industrial applications to control the movement of air around machinery.

How Louvers Work: The mechanics behind how they control airflow

Louvre blades are mounted on a rotating shaft in such a way that they can be opened and closed to control the airflow through an opening. The louvre blades can be opened to allow more airflow or closed to restrict the airflow.

The position of the louvre blades is typically controlled by a manual or motorized actuator.

The operation of a louvre depends on its orientation to the air stream. When the louvre is perpendicular to the air stream, it behaves like a simple dam that blocks the airflow. When the louvre is at an angle to the air stream, it starts to act as a scoop and causes air to flow over and around the blade.

This increases the drag on the blade and causes it to rotate until it is perpendicular to the airstream again.

Applications for Louvers: Commercial and Residential

Window louvres are a popular architectural feature in both commercial and residential buildings. They provide ventilation, natural light, and privacy while enhancing the appearance of a structure. There are many types of louvres available, made from a variety of materials, that can be used to achieve different effects.

Commercial louvres are often larger than those found in residential buildings and can be used to control airflow and glare. They are often mounted on the outside of a building to allow rain and snow to drain away, and can also be used as sunshades or windbreaks. In cold climates, heated air can be blown into the building through the louvres to reduce energy costs.

Residential window louvres come in a wide range of sizes and styles to suit any home.

The benefits of using louvres

Window louvres are a type of window covering that allows you to regulate the amount of light and air that comes into your home. They can be used on any window and come in a variety of sizes, styles, and colours. Window louvres offer several benefits, including:

1) Increased privacy - Window louvres can help to provide privacy by obscuring the view into your home from the outside. This can be especially useful if you live in a busy area or have nosy neighbours.

2) Energy efficiency - Window louvres can help to improve the energy efficiency of your home by allowing you to control the amount of light and air that comes in. This can help to reduce your cooling and heating costs in the summer and winter months.


Window louvres are an important part of a building's design, as they provide ventilation and security. Louvres come in different shapes and sizes and can be used on both the interior and exterior of a building.

There are a few things to consider when choosing the right louvre for your project. The most important factor is the climate; you will need to select a louvre that is suitable for the weather conditions in your area. You also need to take into account the building's style and architecture.

Window louvres are a great way to improve ventilation and security in your home or office. Louvres are used for ventilation and to control the light. We fabricate louvres from aluminium and steel as per your design. 


KJA & Sons - Engineers and Contractors
CC – 15/ 68 A, West Karuvelipady, 
Kochi – 682005

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