uPVC Casement Windows

What Are Casement Windows?

Casement windows swing open and close like traditional doors. They are attached to a frame with side-hinged panels. They are also known as openable windows because they can open inwards or outwards, depending on their design. They have an easy-to-operate handle or crank system.

What are the Key Features of Casement Windows?

Wide Opening Angle for Maximum Ventilation

Casement windows open wide, usually outward, at an angle up to 90 degrees. Unlike sliding or fixed windows that restrict cross-ventilation, casement windows allow the flow of fresh air and natural light. They also have adjustable opening angles to manage air flow. They are ideal for regions such as India with a tropical climate or spaces that need enhanced ventilation.

Clear, Unobstructed Views

The casement window design doesn’t have a central rail, sash lines or divider bar in the middle. They have slim frames and larger glass panes. Hence, they give an unrestricted view of the outside surroundings. These windows make an ideal choice for spaces with picturesque terrain.

Superior Sealing and Insulation

The sash of casement windows forms an air-tight seal when it is pressed firmly against the frame on closing. This seal blocks the intrusion of natural elements such as dust, wind and rain. It even blocks some amount of noise. This not only helps keep the space neat and clean but also contributes to thermal and sound insulation.

Secure Locking Mechanism

Another important feature of casement window design is its advanced, sturdy and reliable locking mechanism. They usually have a multi-point locking handle or system, which makes it difficult to force open them. The limited access points prevent break-in attempts or any kind of unauthorised tampering, thereby enhancing overall safety.

Energy Efficiency

The high degree of tightness in the seal, coupled with optional double or triple-glazed glass, lowers air leaks and prevents drafts. This energy-efficient feature regulates the indoor temperature. It also minimises the load on cooling (air conditioners) or heating (heaters) systems. This leads to energy conservation and lower energy bills.

What are the Different Types of Casement Windows?

Single Casement Window

This casement window is a basic window with a single frame, single sash and one-sided hinge. Its simple classic style makes installation easy. It can open outward or inward, depending on the space design needs. Its compact design is apt for small to medium openings or view optimisation.

Double Casement Window (French Casement)

The double casement windows are also called French casement windows. While they lack a central post or mullion, they have two sashes that open outwards from their midpoint. Due to their symmetrical appearance, they are suitable for large spaces, better ventilation requirements and a wide, unhindered view of the surroundings.

Push-Out Casement Window

This casement window is devoid of a crank mechanism and functions with minimal hardware. It opens outwards through a simple push of the sash. Its slim, sleek and modern look gives a larger exposure to glass panes for view maximisation.

In-Swing Casement Window

As the name suggests, this casement window swings inward rather than outward. It usually opens to 180 degrees. It is suitable for spaces such as patios or outdoor walkways where outward-opening windows can be a hindrance. It also serves a purpose in spaces that have balconies or narrow corridors.

Top-Hung Casement (Awning Style)

This awning-style casement window is hinged at the top frame but swings towards the outside from the bottom. The outward-opening design offers both ventilation and privacy. Moreover, it allows cross-ventilation even during gentle rains. This window is ideal for bathrooms, kitchens and attics.

Bottom-Hung Casement (Hopper Window)

A slight variation of awning style, the bottom-hung casement opens inward from the top frame, but is fixed at the bottom due to hinges. It is ideal for areas that require controlled ventilation and natural light. It is usually installed in garages, basements, attics or small rooms or used as secondary windows.