Double Glazing - Heath Windows & Doors

Double Glazing Installer Cardiff



Heath Windows and Doors Ltd have been supplying and installing the best quality double glazing in Cardiff and the Vale of Glamorgan for nearly 20 years.

Our Family business was highly commended at the esteemed Cardiff Business Awards.

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

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 working experience in the business. We are Allchecked approved installers with verified reviews and Which Trusted Traders. You can see our All Checked Reviews here.


Our customers are always our priority. We want you to be happy with all of our double glazing products. 

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 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.

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 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.


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 the official Police security initiative Secured by Design. 

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?

Heath Windows and Doors Family Business StampNice People to do Business With.

There 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 our philosophy here.Heath Windows & Doors. A Family Business Built on Care.

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.