Cardiff's Premier Double Glazing Installer - Windows, Doors, Conservatories and Roofs

Eurocell garden room

Window and Door Suppliers

Our reputation depends on the careful selection of window and door suppliers who we know can reliably meet our standards for style, durability and value.

Our Brands

We wouldn’t be Cardiff’s best double glazing supplier if it weren’t for our chosen brands. Over the years, we have carefully selected suppliers and cultivated our relationships with them. Our suppliers must share our values and place the same importance on quality and customer service.

We choose not to manufacture our products because bigger companies do that better than any small company. When a small business takes on the manufacture of frames, they become restricted about what they sell and can no longer offer unbiased advice.

Read on for more information about the people we trust with our business and your homes.

Origin Windows and Doors

Each Origin window or door is designed especially for you.  We take the time to understand your requirements, then tailor exactly to your size, colour scheme, finish and accessory requirements. Origin Global Aluminium has the widest range of options to choose from.

While an external door is an essential part of any home or building – providing security and thermal insulation – The manufacturers of Origin Doors believe that it’s much more than just an entranceway.

An Origin Door is a statement piece – it’s as unique and individual as you, as it offers the first glimpse of your home’s style and character. Origin supplies a wide range of entrance doors and patio doors. More about the Origin Aluminium Range.

Origin aluminium windows and doors
Spitfire aluminium front door installed in Llanishen Cardiff

Spitfire Aluminium Front Doors

When you want your front door to be something out of the ordinary, Spitfire has the door for you. Spitfire Aluminium residential doors offer the most exclusive collection of luxury doors. These are the high-end favourite entrance door for contemporary homes often seen on programmes like Grand Designs.  Spitfire Aluminium entrance doors are available in our showroom to view.

We always choose to partner with manufacturers who provide the best for our customers, and if it’s an exquisitely designed luxury door that you want, there is no better than Spitfire doors.

Aluk Aluminium

AluK has been developing aluminium windows and doors for the UK market for over 25 years. With the emphasis on style, the AluK collection combines innovation, high standards and variety while maintaining a competitive place in the market.

The AluK aluminium range includes a variety of windows to suit the aesthetics of any home, including casement windows, flush windows, top swing windows and tilt before turn. More about Aluk Aluminium.

Aluk aluminium windows and patio doors
Opal Heritage Aluminium

Opal Heritage Aluminium

The Opal Heritage range of windows and doors has enough variety to meet the wishes of any homeowner. Heritage Aluminium Windows and Doors are completely bespoke and made with premium-grade aluminium. These modern aluminium windows give the best options for style, durability and long-lasting performance. Aluminium windows are high on the wishlist for most homeowners. No wonder. They can’t be beaten for opulent style, performance and low maintenance. Find out more about the Opal Heritage Aluminium Range.

Residor Composite Doors

Residor Composite Doors are Glass Reinforced Plastic Doors (GRP) and are made by coating a foam slab with a tough plastic skin. This layer is 3.6mm thick on Residor composite doors, which means you benefit from excellent thermal efficiency. Most GRP doors are just 1.6mm thick. Residor Composite Doors are more than twice the thickness of most of today’s composite doors.

Residor doors are fitted with the revolutionary Ultion cylinder lock as standard. This cylinder goes into ‘lock-down’ mode’ in the event of an attack, securing an area of your door that has the potential to be the weakest. While some locks feature 5 or 6 pins, Ultion has 11, and it protects against Lock Drilling for reliable home protection.

More about Residor Front Doors.

Residor GRP Front doors
Solidor Composite Front Doors

Solidor Composite Doors

The most durable, highly secure, timber core composite door on the market. An extensive range is available to view in our newly refurbished Cardiff showroom.

Solidor composite doors have a 48mm solid timber core that offers superior strength and fantastic levels of security to homes in and around Cardiff, Newport, Rhondda, Barry, Penarth, Cowbridge and South East. Wales.
The timber core is encapsulated in a durable plastic edge banding and two thermoplastic door skins. This gives your customers the look of a real timber door without the hassle of maintenance.

More about Solidor Composite Doors.

Endurance Doors

Endurance composite doors are renowned for their style, strength and security. 48mm thick, cross-bonded, veneered, laminated, solid timber core delivers unrivalled strength and dimensional stability. An Endurance front door is a great choice for high security, providing peace of mind to our customers.

Endurance doors are made up of 17 laminations making the door nearly 10% thicker than most composite doors. Your front door is an investment that should make you feel safe and give you a thrill every time you walk up your path and see it.

More about Endurance Doors.

Endurance Front doors
Roseview Secondary Glazing

Roseview Secondary Glazing

Secondary glazing is unobtrusive, robust and blends seamlessly into your home. Our aluminium glazing system is the perfect way to protect your existing windows from drafts and noise. Installing discrete, slim aluminium secondary glazing instantly improves acoustic performance while adding an extra layer of security on the inside. Secondary glazing installation can be completed quickly with minimal disruption to you or your home in just one day. Read more about Secondary Glazing.


Eurocell meets our exacting requirements, providing uPVC windows and doors with high-security locking mechanisms to protect your home and family from intruders.

Protecting your home is a prime concern for every homeowner. Eurocell windows have been designed to deter burglars and secure your property against forced entry. Eurocell’s windows are internally beaded, which means that the glazing units cannot be removed from the outside as they can be with some lower quality windows.

Learn more about Eurocell uPVC Windows & Doors.

Eurocell uPVC windows and doors
Ultion locks

Ultion Locks

Ultion Locks are a revolutionary locking system that when locked, stay locked!

When an Ultion lock detects an attack, a hidden lock within the Ultion automatically engages so that even when snapped twice nothing gets past it. Leaving a key on the inside of the lock won’t affect its performance either.

Rigorously tested, nothing beats the Ultion lock, not even the finest 3-star locks, making it the UK’s best and most secure lock guaranteed.

More about Ultion Locks.

Impartial Advice

Heath Windows and Doors are independent window and door suppliers and installers. This means that we have no allegiance or obligation to any single brand. We are well respected in the industry and have reached a level that enables us to buy quality products at competitive prices.

We first listen to you and then make recommendations based on your needs, preferences and budget. The more you tell us, the easier it is for us to recommend solutions that you will love for years.

flush casement windows in upvcwith wooden front door

Window and Door Suppliers

  • Serving Cardiff, Newport & Swansea for over 10 Years

    heath team photo

    uPVC & Aluminium  Windows






    Tilt Turn

    Timber Windows

    Stained Glass

    Secondary Glazing

    Bay Windows

    Gable Windows

    Origin Windows


    Aluk Aluminium

    Window Handles

    Opal Aluminium

    Triple Glazing

    Double Glazing

    uPVC & Aluminium Patio Doors

    All Patio





    Update Your Home with Modern Patio Doors

    Bifold Doors vs French Doors

    Entrance Doors