What Are the Most Common Types of Windows?

When upgrading or replacing your windows, choosing the right style is essential—not only for appearance but also for energy efficiency, ventilation, and ease of use. If you’re wondering what are the most common types of windows?, this guide explains the key styles available in the UK and how each one suits different property types.

Understanding your options helps you make a well-informed choice that complements your home’s design while meeting modern performance standards.

Why Window Style Matters

The type of window you choose will impact:

• Aesthetics – How the window looks from inside and outside.
• Functionality – How the window opens, ventilates, and operates.
• Energy efficiency – How well it retains heat and prevents draughts.
• Maintenance – How easy it is to clean and maintain.

The right window can enhance kerb appeal, improve comfort, and even increase property value. Let’s look at the most common options available in the UK today.

1. Casement Windows

Casement windows are one of the most popular choices among homeowners. They are hinged at the side and open outward, much like a door.

Benefits:

• Excellent ventilation, as the entire sash can open fully.
• Strong seal when closed, enhancing thermal efficiency.
• Simple design that suits both traditional and modern homes.

Casement windows are also highly customisable, available in uPVC, aluminium, and timber-effect finishes.

2. Sash Windows

Sash windows have a traditional aesthetic, making them especially popular in Georgian, Victorian, and Edwardian homes. They operate by sliding vertically (or sometimes horizontally).

Benefits:

• Classic appearance ideal for period properties.
• Modern versions offer improved energy performance and smooth operation.
• Double-glazed sash windows provide sound insulation and efficiency.

Sash windows are often required in conservation areas, where heritage looks must be preserved.

3. Flush Windows

Flush windows sit flat within the frame, creating a clean, minimal finish. This style has grown in popularity in recent years due to its contemporary appearance.

Benefits:

• Sleek and modern, with smooth, uninterrupted lines.
• Great thermal performance when paired with A-rated glazing.
• Low maintenance with modern uPVC or aluminium frames.

Flush fit windows are ideal for homeowners wanting a refined look without compromising on practicality.

4. Bay Windows

Bay windows are designed to extend outward from the property, typically made up of three or more panels.

Benefits:

• Add visual interest and architectural character.
• Increase the amount of natural light entering the room.
• Create additional internal space, perfect for seating or display areas.

Bay windows are commonly found in mid-20th century homes but suit a variety of house types with the right frame and finish.

5. Fixed Windows

Fixed windows (also known as picture windows) are non-opening and designed to maximise natural light and unobstructed views.

Benefits:

• Ideal for feature areas such as stairwells or large open-plan rooms.
• Extremely thermally efficient, as they are completely sealed.
• Work well when combined with other opening window styles.

They’re best used in spaces where ventilation is not required but views and light are key.

6. Tilt and Turn Windows

These windows offer two methods of operation—tilting inwards from the top for ventilation or swinging open like a door for cleaning or emergency access.

Benefits:

• Great for upper-floor installations due to easy cleaning access.
• Dual-opening function offers flexibility for airflow and safety.
• Strong airtight seal improves insulation.

Tilt and turn windows are especially popular in modern builds and flats where interior access is a priority.

7. Aluminium-Framed Windows

While not a style in itself, aluminium-framed windows are becoming increasingly common due to their sleek appearance and strength. They’re ideal for large windows and slim sightlines.

Aluminium is also widely used in patio sliding doors and bifold doors, providing consistency across modern glazing projects.

Choosing the Right Window for Your Home

To decide which style suits your property best, consider:

• Your home’s architectural style – Period homes often suit sash or bay windows, while modern homes look great with flush or aluminium frames.
• Ventilation needs – Casement or tilt and turn windows offer excellent airflow.
• Natural light – Bay and fixed windows maximise incoming sunlight.
• Budget – uPVC tends to be the most cost-effective option, with aluminium and timber-effect styles at a higher price point.
• Energy efficiency – Look for A-rated windows certified by the BFRC.

Do Window Styles Affect Building Regulations?

Yes. Certain window styles may be required in specific areas, particularly in conservation zones. Others must meet standards for fire escape access, thermal insulation, and ventilation.

To ensure compliance, always use a FENSA-registered installer. You can verify trusted professionals like Skyway Windows via the FENSA register. For further regulatory advice, consult the LABC.

Why Work with a Specialist Like Skyway Windows?

At Skyway Windows, we provide tailored window solutions to match your home’s style and performance needs. Whether you’re drawn to the clean look of flush windows or the classic charm of sash, we guide you through:

• Style and frame options suited to your property.
• Glazing choices that balance cost and efficiency.
• Products that meet Building Regulations and energy standards.

We also offer a range of composite entrance doors for full home transformations.

If you’ve been asking, “what are the most common types of windows?”, now you know the top options—and how to make the right choice for your home. Contact us today for expert advice and a free quote.