Everything You Need to Know About Window Opening Types

Are you looking to upgrade your home with new windows but unsure which opening type to choose? You’ve come to the right place.

Selecting the right window opening type is one of the most important factors for enhancing your home’s appearance, energy efficiency, and functionality.

In this guide, we’ll explain everything you need to know about the various window opening types available, making it easy for you to find the perfect fit for your home.

Let’s get started on transforming your living space with the ideal windows.

Casement windows

Casement windows are one of the most popular styles for UK homes due to their ability to suit traditional and modern architectural styles. With their modern hinged design, casement windows open easily for ventilation.

Many households install these windows as they offer unobstructed views due to the lack of sashes. The best thing about casement windows is their many opening options.

Whether you’re looking for functionality, ventilation, or unique characteristics, you’ll find a casement window style that fits your preferences.

Side-hung casement windows

Side-hung casements are the most popular style, as they’re easy to install and use. The windows have a hinge on one side of the frame, allowing an outward opening mechanism.

Pros:

• The outward opening mechanism allows for seamless cleaning.
• You can enjoy beautiful views.
• Side-hung window designs are perfect for modern homes.
• These windows provide optimal ventilation.

Cons:

• You can only open the windows outwards.
• The windows swing open, which can cause obstructions in areas with limited space.
• Side-hung windows can increase the risk of intrusion.

Top-hung casement windows

Top-hung window opening types, also known as awning windows, have the same minimalist design as side-hung windows but hinge at the top instead of the side. The sash is pivoted around the upper horizontal axis and can be cleaned only from the outside.

Pros:

• Top-hung window openings can protect your home from rain, as their unique opening mechanism ensures rainfall runs off the window instead of into the home.
• Ideal for attic rooms or basements as they don’t block egress.
• Awning windows allow for superior ventilation control.
• Top-hung windows offer unobstructed views.

Cons:

• The windows have a smaller opening width.
• Awning windows are popular – but there might be limited customisation options.
• Their outward opening mechanism could still obstruct space.

Bottom-hung casement windows

Also called hopper windows, bottom-hung designs aren’t as popular as side—or top-opening mechanisms, but they can be beneficial for some homes. In a bottom-hung casement window, the sash pivots around the lower horizontal axis and opens inwards.

Pros:

• These windows can attract airflow into rooms.
• The inward opening sash offers enhanced security.
• Ideal in areas with limited space.
• The opening mechanism facilitates superior ventilation control.

Cons:

• Bottom-hung windows don’t open as far as side-hung windows.
• The opening mechanism can block your views.
• Some people might struggle to clean the windows.

Sliding windows

Sliding windows are popular in the UK and typically feature a sash design. If you have a character home or love traditional style, sash windows add unique details and a touch of class. Modern properties can also accommodate sliding windows, enhancing space by avoiding a hinged mechanism.

These window styles can incorporate different sashes, enabling them to blend with the property. While sash windows are a beautiful addition, they usually require more maintenance. Depending on your preferences, you can also find single—or double-hung windows.

Horizontal sliding windows

Horizontal sliding window designs are popular for homes with limited space, as they don’t swing outwards. If you want to enjoy panoramic views and have enough space to install sliding sash windows, they always make a statement and can become the focal point of any property.

Pros:

• These windows are easy to operate, making them popular for people with mobility issues.
• The sliding mechanism doesn’t take up much space.
• The sashes can stack on one side, providing clear views.
• Most horizontal sliding windows allow for easy inside cleaning and minimal maintenance.

Cons:

• Sash windows don’t open fully, which can impact ventilation.
• Older-style windows have limited security features.
• Some people might struggle to clean the exterior panes.

Vertical sliding windows

Vertical sliding windows are a popular alternative to hinged windows. They have a similar design to horizontal sliding windows—except for one obvious difference. With these windows, the sliding mechanism is vertical, enabling you to slide the sashes up and down.

Pros:

• Vertical sliding windows are ideal for smaller properties
• They have a timeless appeal
• You can customise airflow by opening both the top and bottom sashes
• These windows can accommodate multiple locking points

Cons:

• Vertical sliding window frames can cost more than horizontal sliding windows.
• The opening widths are still limited.
• The vertical sashes can be heavy.

Unique window opening types

While casement and sash windows are the most popular designs, many other windows are available today. With homeowners worried about security and energy efficiency, opting for a modern opening mechanism can provide peace of mind while also improving accessibility.

Depending on your preferences and property type, you can choose secure opening types – each offering unique benefits.

Horizontal pivot windows

While less common than other window styles, horizontal pivoted windows can benefit some homes. Usually large, the sash turns around a horizontal axis in the window’s centre. The lower half of horizontal pivoted windows open outwards, while the top opens inwards.

Pros:

• Horizontal pivots are ideal for controlled ventilation.
• Suitable for high areas where a vertical pivot isn’t practical.
• The unique opening mechanisms can control airflow and enhance energy efficiency.
• Enjoy unobstructed views of your environment.

Cons:

• These windows are less common than other styles.
• The inward opening mechanism can obstruct small rooms.
• You can’t open the windows completely.

Tilt and turn windows

Tilt-and-turn windows open inward and combine two opening types (hung and tilt) in one sash. They usually have an easy-to-reach handle, enhancing functionality and ventilation. These window opening types are popular in modern homes that want secure ventilation.

Pros:

• You can tilt the window for ventilation or open it fully.
• These windows often incorporate high-security locks.
• The inward opening mechanism preserves space.
• Tilt and turn windows are easy to clean and maintain.

Cons:

• Tilt and turn styles can be more expensive than other windows.
• You might need wider window frames.
• The handle can be hard to operate for people with mobility issues.

Fixed windows

Also known as picture windows, fixed window designs don’t open. Instead, you’ll use them to attract natural light into the property or create a viewing point. These windows can be beneficial for period properties in the countryside.

Pros:

• With no sashes, these windows are all about panoramic views.
• Installing fixed windows is cost-effective, as they don’t use moving parts.
• These windows are easy to maintain and clean.
• You can choose custom windows in a range of shapes and glass options.

Cons:

• Fixed windows are for aesthetic purposes only.
• You’ll need to install opening windows to provide a fire escape.
• Fixed windows don’t offer any ventilation.

Selecting the right window opening mechanism

So, now you know the types of windows and opening mechanisms, it’s time to think about which is best for your needs. All homes are different, but asking yourself the following questions can help you make a decision:

Is ventilation important?

Awning windows and side-hung casement windows are best for maximum ventilation, while pivot or tilt-and-turn designs offer controlled ventilation. Picture windows can be beneficial if you already have a well-ventilated property and want to encourage natural light.

Are you going for a modern or traditional style?

Some windows suit modern homes, while others are best for injecting character into period properties. Modern properties are all about creating clean lines and focusing on minimalism, so casement windows or tilt-and-turn styles are ideal. Sash windows are suitable for classic homes.

Is space an issue?

Homes in busy areas have limited window choices, as the opening mechanism can’t cause obstructions. Sliding windows don’t have an outward opening mechanism, making them suitable for homes with restricted outdoor space. Pivot windows can also be beneficial.

Do you want a low-maintenance solution?

All windows require maintenance, and most modern designs are easier to clean. However, windows with outward or inward openings are usually easy to clean, while others might require specialist support.

Are there building regulations in place?

Listed properties or homes in conservation areas must ensure their new windows comply with building regulations. For example, a Grade II listed period property might need Georgian or Victorian windows, so modern designs are not an option.

Other things to consider when choosing new windows

Windows should be a lasting investment; you’ll want to ensure you choose the right solutions for your property. When people visit your home, they’ll notice its exterior elements, including whether the windows match the rest of the property.

You can explore compatible window types once you know which opening mechanism suits your needs.

Window frame style

Do you have a modern or traditional property? With so many window frames available, it’s important to choose an option that blends seamlessly with the building’s architectural style.

For example, casement and picture windows are best for modern homes, while sash windows are the ultimate statement for traditional properties. Opting for bay windows gives your property a focal point if you want to maximise light and space.

Materials

Another consideration is the window frame material you’ll choose. While uPVC frames are affordable solutions, they lack the aesthetic appeal of timber windows. Modern timber window frames undergo treatment to make them resistant to rot and warping, resulting in a long-lasting solution.

While wooden windows are an investment, their natural aesthetic appeal and ability to enhance traditional and contemporary architectural styles make them eternally popular.

Glazing options

In the ongoing fight to reduce our carbon footprint, energy-efficient windows are vital for properties across the UK. When deciding whether to install double or triple glazing, remember to consider where you live and whether your area experiences a lot of noise.

Double glazing can block out external noise and provide thermal efficiency, but properties in busy urban areas might prefer triple-glazed windows.

Security features

The type of window you choose will determine its security. Many modern windows incorporate multi-point locks, which make it harder for people to break into the property. These mechanisms are especially beneficial for windows with large openings.

Explore made-to-measure timber windows today

Timber windows are the perfect investment for properties that want to combine style with functionality. Whether you’re looking for casement, sash, or awning windows, we have a selection of beautiful designs—all available with customised hardwood finishes.

If you want made-to-measure windows that offer years of natural beauty and security, we’ll always exceed your expectations. Please contact us today for a free quote.