Casement Windows available in Cardiff in Aluminium and UPVC

Casement Windows Cardiff.

Superb uPVC or Aluminium Casement Windows Cardiff. Smart, Simple and Attractive. Custom-built and Installed by Experts. Keep Your Home Warm, Stylish and Secure.

Our Best-Selling Double Glazed Windows.

uPVC casement double glazed windows are popular because of their flexibility in choosing the layout and decorative features. Usually, unless there are reasons to use a different style, such as planning restrictions, most of our customers in Cardiff choose uPVC casement windows. To replace timber windows, they usually choose flush sash windows.

Heath Windows and Doors are the premier suppliers for the best quality uPVC and aluminium casement windows in Cardiff. As with all our window and door installations, you can expect the care and attention to detail that comes with fully employing installers for quality control.

Generally in the Cardiff area, we install casement or sash windows.

Casement Windows avaialble in Aluminium and UPVCCasement windows are characterised by the fact that they are hinged, most often on the side, on the top and sometimes on the bottom.

Sash Windows are opened by sliding the bottom sash upwards. If you have a double-hung window, you could also slide the top sash downwards. Read more about sash windows.

Casement Windows for Security, Style and Superb Noise Reduction.

What most homeowners want from their new windows is security, attractiveness and superb noise reduction, and double glazed casement windows offer all of that.

Once installed, these durable windows need little-to-no maintenance and are suitable for a wide range of properties, giving a functional yet stylish finish to your home. You know it will be a perfect fit because every uPVC casement window installed by us is made to order.


Call Heath Windows and Doors Cardiff to arrange an appointment on 02920 650 854 or pop into our Cardiff Showroom.  Click for directions.  Alternatively, please email us at This email address is being protected from spambots. You need JavaScript enabled to view it.. We look forward to hearing from you.


A Wide Range of Options.

The wide range of design options and finishes allow you to be adventurous or choose a casement window design that sits well with the house without drawing attention.


Designs for casement windows include Georgian bar, Astragal bar and Mock horn. The casement window finishes range from woodgrain effects to more solid colours, and there are also various glazing options. You may also further personalise your windows with a choice of window furniture in gold, chrome, white or black. 

Ideal for All Properties.

3 sash options for casement windowsThis simple and functional casement window design is ideal for all types of property. It is the most popular and widely used style of double glazed window in Cardiff, Newport and the Vale and most certainly South East Wales. Our uPVC casement windows can be either top-hung opening or side-hung opening to suit your requirements, providing excellent ventilation and security. You can choose a flush finish, clean-cut chamfered beading or a more decorative sculpted ovolo finish for your new windows. Your choice will be a combination of what works best for the house and your personal taste. You may also wish to consider internal or external Georgian bars. We have a wide range of options which we are happy to show you. If you currently have timber windows and wish to retain the traditional look then consider flush windows. Flush casement windows give a similar look to timber windows, having the same shaped frame. They also have some woodgrain finishes for a more authentic look.

High-security windows system.

Our double glazed uPVC windows are durable and robust, giving long-life, low-maintenance performance, with no need for painting or other treatments. They are fitted with high security locking mechanisms too, giving you the peace of
mind that your home is well protected against intruders. 

Energy-efficient design.

The multi-chambered frame designs deliver exceptional energy efficiency for both windows and patio doors – helping to keep your home warm and comfortable all year round, as well as reducing your energy consumption. Our slim frames also allow the area of glass in windows to be optimised, maximising the amount of natural light within your home. The energy efficiency is slightly higher on the uPVC casement window than on aluminium but both are A-rated.

Exact Matched Colours.

Because the same manufacturer produces all our frames, we can assure you that all colours are exactly matched across our entire range of window and door products. It means that our whites are the same white across all products and our woodgrain finishes are all perfectly matched. No matter what the age, style or size of your property, we can create high-quality windows to enhance and add value to your home.


Most of our uPVC windows come with 10-year guarantees and our aluminium windows have 20-year guarantees. These can vary depending on what you choose but be assured that we partner with manufacturers who give our customers the best in style, durability, energy efficiency and guarantees.

 For UPVC and Aluminium Windows in Cardiff, Look No Further than Heath Windows and Doors.

Casement Windows for Bays and Bows.

In Cardiff, we have many older homes with bay and bow windows that are fitted with sash windows. This is usually because they already have stone pillars between each window. Newer properties with bay or bow windows usually have double glazed casement windows with pillars formed from uPVC with aluminium inside for support. When you choose your replacement windows, you do not have to replace like with like. We will help you to choose the best option.  We've installed so many windows in Cardiff in the last twenty years, we are bound to have examples to show you.

Aluminium Casement Windows.

Aluminium casement windows are often chosen for more modern houses, particularly when the homeowner is looking for a 'grand designs' aesthetic, however, many of our customers in Cardiff have chosen aluminium for older houses because of the slimmer frames in smaller windows and because of the durability. As you would expect, aluminium windows are more expensive than uPVC but we are happy to explore the options with you. We know how important your home is and are happy to take the time to ensure you make the right choice.

Aluminium Slim Frames

Each Aluminium Window is Fully Customisable.

Your aluminium windows are fully customisable so you can choose where you want openers and whether you want them top-hung or side-hung. Opening windows are more expensive than fixed pains of glass. That makes sense but you must choose the best configuration for the way you like to live. You do not have to copy what is already there. Each window can be specified to work however you want it to.

Choice of frame size.

Our aluminium casement windows are often chosen for the slim frames giving a more modern, sleek look while also allowing for more window area. More glass equals more light, slim sightlines, and the feeling of space. The strength of the frames means that larger areas can be glazed compared to uPVC alternatives.

Choice of Frame Styles. 

Aluminium casement windows are available with square or chamfered frames to help you choose a style that suits the character of your house. Our customers sometimes worry that aluminium is too modern for older houses but our chamfered frames help to bridge that gap.

How Much do Casement Windows Cost?

The cost of your replacement windows will depend on several factors. The quality of your new casement windows certainly has an effect on the price, both in the materials used and the fixings. The difficulty for you as the customer is knowing the difference. Windows look the same when they are fitted. It's only in time that you start to see windows dropping because the hinges aren't sturdy enough or frames bowing because the aluminium or steel inside the frame is not strong enough. The fitting can also make a difference. Your windows need to move smoothly and this relies on level fitting. Unfortunately, the industry is known for sub-contractors who value speed over quality. That's the reason that as a premier window supplier we fully employ our installation engineers. They know that quality takes precedence and will take their time to ensure the perfect installation. 

Sometimes the perception of cost is related to house value. There is no difference in cost whether you live in Cardiff or anywhere else. A single casement window costs the same whether you have a 2-bed bungalow in the South Wales countryside as it does for a 6-bedroom house in the middle of Cardiff.

Changing From Sash Windows to Casement Windows.

First of all, let's consider why you would change your old sash windows for casement. Old sash timber windows are notorious for being sticky to open, especially if they are painted in. If that's the reason, be assured that new uPVC windows will not present the same difficulties. Modern glazing moves smoothly and you will find them easy to open and close. Sometimes old sash windows can be stuck, either fully open or partway. This will not happen with new windows either. Both sash and casement will offer super energy efficiency as you would expect from modern uPVC windows.



Matching Patio Doors.

All of our window ranges have matching doors. If you are replacing your windows, you may also be considering replacing patio doors or even opening up to the garden with patio doors. All of our casement windows have a range of patio doors and back doors that match the windows. You are not under any pressure to replace everything at once. You may wish to spread the budget by replacing windows now and the doors later. Some of our customers split the budget by replacing front windows followed by back windows later. It's all up to you. We are here to help you achieve your dreams in the way that is best for you.


Call Heath Windows and Doors Cardiff to arrange an appointment on 02920 650 854 or pop into our Cardiff Showroom.  Click for directions.  Alternatively, please email us at This email address is being protected from spambots. You need JavaScript enabled to view it.. We look forward to hearing from you.


Nice People to do Business With.

A family business stampThere is no pressure or obligation when you speak to us. Your home improvement purchase is important and we value your business. We treat you with respect by offering the advice that is right for you and your home. We are fair and straightforward with our quotations. No artificially inflated prices to show false discounts - Guaranteed. You can find out more about us here.

Heath Windows and Doors Ltd is Certass approved and for further peace of mind, we secure your deposits with Insurance Backed Guaranteed. Our doors and windows are fitted by exceptional installers who have a great deal of expertise backed by continuous training. This is one of the benefits of using a company that fully employs its installers. We insist that they take the time to complete a first-class job and because they are employed, they can afford to do so. All of our products carry at least a 10 year guarantee. We are Allchecked approved installers with verified reviews and Which Trusted Traders. We are regulated and authorised by the Financial Conduct Authority partnership 07762081 - We do not send to a panel of lenders but use Omni retail finance.

Covid 19.

While we will try to accommodate anyone who visits without an appointment, we strongly advise booking so that we can give you our best attention. We request that you wear masks and use the sanitiser provided at the entrance.

We're told that we have the best showroom in Cardiff and South Wales and now we have won the National Federation Award to back that up. Please pop along to our Cardiff showroom and get to know us, or call to arrange for us to visit you. Call us on 02920 650 854 or visit this page to contact us.


Showroom of the year award

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