Double Glazing Installer Cardiff


Premier Double Glazing Cardiff. For the best in Aluminium and Upvc double glazed windows. Fully employed installers for quality control and company wide dedication.

Windows, Doors, Conservatories and Roofs.

Heath Windows and Doors Ltd have been supplying and installing the highest quality double glazing in Cardiff and the Vale of Glamorgan for over ten years. We had a mission to supply quality right from the start and our reviews show that we kept that promise.

We understand that the double glazing industry is renowned for shady practices and that customers approach the purchase of replacement windows with trepidation. No need for that when you come to Heath Windows and Doors. 

We guarantee no pressure or obligation. Your home improvement purchase should be an enjoyable event and we do our best to make sure it is. 

Our Family business was highly commended at the esteemed Cardiff Business Awards and we recently won ' Showroom of the Year.

Our Double Glazing Services in South Wales includes Cardiff, Newport, Penarth, Barry and all of the Vale of Glamorgan & Bridgend plus all of the valleys and all of South East Wales.

Straight Talking and Good Advice.

Heath Windows and Doors provides high-quality products and services. Our company does not take advantage of sales gimmicks as we know our customers just want straight-talking and good advice. This combined with a second to none service and quality finish makes us the firm favourite double glazing installer in South Wales. We're also Certass approved and use an Insurance Back Guarantee to secure your deposits for further peace of mind.

Our doors and windows are fitted by exceptional installers who have 30 years of working experience in the business. We are All Checked approved installers with verified reviews and Which Trusted Traders. You can see our All Checked Reviews here. 

We know you want to complete your project as quickly and efficiently as possible. That’s why we make sure our workers are helpful, efficient, and mindful of any disruption they may cause in the process. You won’t have to settle with anything less than what you deserve from us!

We always work hard at minimizing disruptions for clients during their home improvement projects so that things can go smoothly while also being cost-effective too; after all, investing money into new solutions doesn't come cheap or without a lot of stress either way around.

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.

Fully Employed Window Installers at Heath Windows and Doors CardiffEXPERT DOUBLE GLAZING INSTALLATIONS BY FULLY EMPLOYED CRAFTSMEN.

Our customers are always our priority. We want you to be happy with all of our quality double glazing products. All of our customers are equally important to us whether you just require one double glazed window or a whole house full.

Windows are the showcase feature of your home  They determine the character and appearance of your property, whether it’s a chic apartment, a traditional Victorian terrace or a stylish new-build house. Windows frame your view of the world from within and define the appearance of your home from the outside. 

It’s essential to choose replacement windows that complement the style of your home, provide long-life protection against the elements and enhance the security of your property. With our versatile PVC-U windows, you can rest assured that you will find an attractive, secure, energy-efficient style to suit your home. With our ten-year insurance backed guarantee, you'll have peace of mind too.

We have the experience to assist you in making the right choice for you and offer white and woodgrain colours to give the traditional look as well as a wide range of bespoke colours available on request. Our range includes Vertical Sliders, Casements, Tilt and Turn windows and much more. Why not call us to show you our portfolio of products and give you a free survey. Our windows are energy rated A to C and by having energy rated windows you could save £££s on your energy bills.You can read more about how windows in Cardiff help to conserve energy in our news section.

All our double glazed windows use the best hardware and shoot bolt locking for added security with stainless steel screws throughout.

We understand that having work done in the home can be disruptive but our feedback shows that we make every effort to minimise disruption. Our installers are respectful of your home and will show every consideration. While we will aim to complete your installation as efficiently as possible, one of the reasons that we fully employ everyone who works for us is that we want them to take their time and prioritise quality over speed.

Double Glazing Installations for Thermal Efficiency and Security.

By partnering with the leading manufacturers in the industry we are able to offer a standard of double glazing that excels in thermal efficiency, security, durability and performance. 

When you buy double glazing, you are not just buying windows. You are also buying peace of mind, with double glazing that has been tested against the highest levels of security. 


Of course, UPVC windows aren’t just there to look pretty. Within our range, you’ll find the highest energy rated windows on the market. Many of our window systems are made from 100% recycled UPVC components, so they’re not just high quality, they’re sustainable too. And for added peace of mind, all of our UPVC windows come with a high-security frame with a multi-point locking system.

High-security UPVC window systems.

Our UPVC products, including windows and doors, 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.

Many of our windows, doors, conservatories and other UPVC products are covered by security initiatives. We'll advise about security when we discuss your window requirements.

More than just UPVC Double Glazed windows?

Double glazed windows are more than clear glass that you can see out of. Good quality double glazing does a powerful job of keeping warmth in and the cold and noise out.

For something we spend most of the time looking through rather than looking at, choosing new windows can occupy a huge amount of our time and raise a lot of questions.

What style? What colour? What’s the difference between casement windows and sash? What about maintenance? And energy efficiency?

How Much Does Double Glazing Cost?

To use a much-quoted answer; 'how long is a piece of string?' It really is as diverse as that. You can buy cheap windows from DIY stores such as Wickes and B&Q. That's probably the cheapest way if that's the priority. Will they stand the test of time? It's a gamble and you won't know the answer until they fail. The same applies if you buy from the cheaper nationals. If you can negotiate, you may get a good price but please look at the feedback on Trustpilot before ordering.

The cost will depend on several factors. Quality has an effect on the price, both in the materials used and the fixings. The difficulty for you as the customer is know ing the difference. Windows and doors 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 is related to house value. There is no difference in cost whether you live in Cardiff or anywhere else. A 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.

The difference is that when you pay for quality, you can expect your windows to last a lot longer. With double glazing, you really do get what you pay for.  Our quotes are free and without obligation so there's no harm in letting us measure up. Pop your details in the chat below and we'll give you a call to arrange to come and measure for you.

Why are Everest Windows so Expensive? Are They Really Better?

We're often compared to Everest although we are not as expensive as them so a quick word on why we think Heath Windows and Doors is the better choice.

There is nothing wrong with the quality of Everest Windows but when you buy from them, you really are paying for a name and the high commissions that are paid to everyone involved in the sales process. 10% commission means that if you spend £10,000, £1,000 is going to the salesperson plus the cut for the sales manager, the canvasser and the cost of lead generation. They have a massive operation that has to be paid for. When we quote, we give you our best price without any games or inflating prices to show false discounts. There is no pressure or obligation and we won't stay in your house for three hours.

Are Everest Windows Really the Best?

We would claim that our double glazing products are just as good as Everest, especially when taking all of the factors into account. We think our feedback shows that. Everest won the right to use the 'Fit the Best' tagline based on one strength test many years ago. Since then, they have been through many changes including closing the company and starting again twice.

We choose our manufacturers for quality, style and value and believe we match Everest for quality. When you call us, you speak to a person and are not left on hold for a long time. Our fitters are fully employed which means that we control the quality of our installations. Everest sell on the basis of having a life-time guarantee but that guarantee is only for condensation between panes and that is an extra cost. The usual guarantees are the same as ours - 10 or 20 years depending on the product.

With all factors considered, for peace of mind and continuous relationship, we believe that Heath Windows and Doors offer a better service than Everest and certainly more value. 

Are Double Glazed Windows Worth the Investment?

If you’re considering having double glazed windows installed into your home, then you’ll want to know if they’re worth the investment, and rightly so. Here you can find out all about double glazed windows, from the key assets to how long they last.

Reduce Noise.

If you live next door to a screaming baby, double-glazed windows are your answer to blocking that unbearable noise out. Granted, all babies cry, but it doesn’t mean you want to hear these cries in the middle of the night when you’re trying to sleep.

Say hello to double-glazed windows and goodbye to sleepless nights. These stylish windows are brilliantly soundproof and will therefore create a barrier between your home and the environment outside… even traffic on a busy main road. 

Your home is your refuge, so it's important that you take care of the soundproofing. Our UPVC double glazing will keep out unwanted noise from outside and give you a quieter house to live in.

Stylish as well as Functional.

Who would have thought that windows, of all things, could be stylish? Well, they can. In fact, windows can often be a focal feature of a home; they are, after all, one of the first things you notice about a house.

So, whether you want double glazed windows to make your home look aesthetically pleasing for yourself, your guests or potential buyers, double glazing is the way forward. They look much nicer than traditional windows, without compromising on other essential qualities.

Security is Maximised.

Double glazed windows are tougher to break than standard windows and the fact that they’re sealed tighter means they’re difficult to force open. Burglars will have a struggle trying to access your home via double glazed windows. Do we need to convince you further?

White flush uPVC Windows installed in CardiffNo Escape for Heat.

Double glazed windows mean that there’s no chance of warm air escaping. With the UK renowned for having very unpredictable summers, houses can get cold quite quickly if heat is able to seep out.

However, double-glazed windows create thermal insulation thanks to their airtight construction. In turn, this will reduce the amount of money spent on heating your home.

Energy Saving.

Due to heat retention, lower energy bills are inevitable. And who’s going to complain about that? It’s estimated that after the installation of double glazed windows, an average home-owner will save £170 a year on energy bills.

Multiply this annual saving by the number of years the windows last and the homeowner could have saved a whopping £3400 as they are expected to outlast their ten-year insurance backed guarantee..

Long Lasting.

You can reasonably expect your double-glazed windows to last as much as twenty years. There are some that have lasted even longer than that. That’s a long time so, it’s well worth splashing out on these durable windows.

Poorly fitted windows won’t last half as long, which is why it’s important to choose a reputable double glazing installer.

Double Glazing Cardiff.

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5 Costly Mistakes You Can Make When Buying Windows.


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