Welcome
When you choose Pendragon Windows & Doors, you choose a professional installation business supplying & installing a fantastic range of high quality, Energy efficient & bespoke windows & doors.

Enhancing your home is simple with FENSA Approved Window & Door Installer Pendragon. We provide a personalised service, collaborating closely with you to create tailored & appropriately designed replacement window & door systems to enhance your home. From initial consultation & quote, through to ordering & installation, our friendly team of experts take care of you, every step of the way.

Get a free quote from Cardiff & Bristol’s leading double & triple glazing installer today.
Get a Free Quote
uPVC Windows
A choice of styles & colour finishes as individual as your property. Double or triple glazed our upvc windows can be designed to complement your home. Smart sensor enabled & A energy rated as standard.
View Our uPVC Windows
Aluminium Windows
Aluminium windows are precision manufactured in South Wales with versatility & function in mind. Expertly installed by Pendragon Windows & Doors, they complement both modern contemporary & traditional style homes alike.
View Our Aluminium Windows
Composite Doors
At Pendragon we offer a vast range of beautifully designed (by You!) sturdy & resilient composite doors from leading manufacturers Endurance. Featuring solid timber core, heat reflecting skin with coolskin technology in 19 fabulous colours, moisture barrier & 10 year warranty.
View Our Composite Doors
uPVC Doors
Our high quality uPVC front doors are available in a variety of colours, styles & finishes & can be tailored to your own design specification just for you. For added customisation, our uPVC front doors can be fitted with a range of accessories including various handle styles & colours, cat or dog flaps, spy holes, & a collection of letterbox, knocker & hinge choices.
View Our uPVC Doors
Aluminium Doors
Aluminium Doors are increasing in popularity & for good reason. Long-lasting & versatile, these ultra modern aluminium doors will add value to your home & enhance its curb appeal.
View Our Aluminium Doors
Advice Centre
Check out our articles for advice about choosing your new windows & doors, the latest news & inspiration.
Advice Centre
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FREE Brochure Download

Why Choose Pendragon?

When you’re investing in new replacement windows & doors for your South Wales home, you want the best quality products from a team with in depth product knowledge of all double glazed window & double glazed door products.

Whether you’re looking to install a new set of windows or a bifold door, at Pendragon Windows & Doors you can be sure of a high-quality product, designed bespoke & expertly manufactured just for your home.

Get a quote for uPVC & aluminium windows, doors & bi-fold doors.

Choosing the Right Double Glazed Windows & Doors for your Home

Whether you’re looking to install a new set of upvc double glazed windows or a bifold door, at Pendragon Windows & Doors you can be sure of a high-quality product, designed bespoke & expertly manufactured just for your home.

We offer an extensive range of products, including double & triple glazed windows & a collection of bespoke uPVC, Aluminium & Composite doors.

At our Cardiff based offices Pendragon Windows & Doors have an exceptional team of design consultants & a highly trained, experienced & friendly installation team that will help bring your creative designs to life.

From the moment you get in touch, right through to completion of the project, you can trust that you can rely on us to provide you with any advice you need & answer any questions that you may have to help You make an informed choice as to what’s best for you & your home.

Every installation undertaken by Pendragon Windows & Doors is registered with governing body FENSA & for your peace of mind backed by a comprehensive 10 year guarantee as standard*.

Double Glazing Prices

How much will it cost is a question that we get asked regularly. As your new windows & doors are made bespoke to fit your home perfectly in order to give you a quote, one of our design team will need to chat to you about what you have in mind and get some measurements of the existing windows. Book a consultation through our online diary system or give us a call.

Replacement Double Glazing - uPVC Windows

Pendragon Windows & Doors offer a wide range of double glazed upvc windows.  From the standard casement window which is seen on 90% of UK homes to flush casement, french windows & sliding sash windows.

Stylish, modern Anthracite Grey windows as well as the popular Chartwell Green & woodgrain finishes such as Rosewood, Golden Oak & Irish Oak there is a wide range of coloured upvc windows for you to choose from.

At our Cardiff based offices Pendragon Windows & Doors have a team of design consultants using visualisation software that will help bring your creative designs to life.  Many clients find this particularly helpful when they are looking to change the colour or style of their windows.

Need Inspiration for your Next Project?

Take a look at our gallery of home improvement projects for some inspiration

6 Steps to your New Windows & Doors

Quote Supplied

Our expert team will visit your property and provide a free quotation.

Contract

After acceptance, we will produce a written contract for you to sign.

Survey

Our team will then carry out a technical survey.

Products Ordered

We will then order your products from our specialist UK manufacturers.

Installation

Our team will then install your new windows & doors on a day that suits you.

Guarantee

Once the installation is complete, we will supply you with your FENSA certificate.

What our Clients Say

"Jules, Kay, and the rest of the team are outstanding. Customer service from beginning to end went above and beyond. Every stage was explained and communicated so that we knew exactly what was happening and when. Some minor issues during fitting were resolved without any fuss and we now have some fantastic looking windows and a much warmer house! Pendragon are definitely changing the face of the window industry with the high quality service they are providing. I cannot recommend them highly enough." - Gareth, Risca
"Grate customer service and aftercare, friendly family run business. It’s was a quick turnaround from ordering to installing! Very pleased with my new windows and door. Highly recommended if you want a hassle free friendly experience 5*****" - Chrissy, Machen
"Thrilled with our new Endurance Door from Pendragon! Jules was great from start to finish, patiently guiding us through design ideas until we settled on the perfect fit. Communication couldn’t have been better throughout process and the installers were professional, tidy and did a great job. Highly recommended!" - Felicia, Chepstow
"I had an excellent service from Pendragon. Great advice from the start and helpful and considerate. The installation of my windows happened so quickly and smoothly with no fuss or mess and I know it was no small job removing the old windows so 10 out of 10 and thank you!" - Toby, Hereford
"Had a wonderful experience with this family owned and run business. Polite,curteous and helpful all the way through. Came and measured up,listend to what I required,provided a detailed quote and waited for my response,no pressure sales,kept me fully informed throughout the process. Windows and doors are made to measure,bespoke to your property and look amazing. And Wow the front door is stunning and the icing on the cake is that they were not even the most expensive company out there. A wonderful experience with a stunning end result. Definately recommend using Jules and his team. First Rate Company" - Lesley, Newport
"Excellent experience with Pendragon Home Improvements. Ordering was easy, kept us informed all through the process. Door was delivered quicker than expected. The fitters were polite, efficient, did a top class job and cleaned up any mess. Highly recommend this company." - Julia, Pontprennau Cardiff
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Frequently Asked Questions

The cost of your replacement double glazed windows & doors will be determined by the size of your existing windows & doors but also depends on the colour your replacement windows & doors will be & the style. If you have the sizes of your windows & doors then we can provide you with an estimate.

In summary, Yes, replacing your outdated double glazing is a sensible option to consider. The reason being, outdated double glazing can lead to increased energy costs & reduced warmth in your home during the colder months. By installing new & more advanced windows, you can improve the heat retention in your property & ultimately save money on your utility bills whilst doing your bit for the environment. The glazing industry’s manufacturing technology has advanced significantly over the last 20 years with products now having much better U values (insulation) due to increased volume of chambers within the frames, greater cavity size between the glass panes & even the advent of triple glazing. The quality difference between high quality products available to homeowners today & yesteryear is simply stella!

Yes we do! We have a clever piece of software for this where we can collaborate on the design together online & create multiple quotes for different options via a video call. If you can provide photos of your property first we can also create realistic images of what your design choices will look like on your home. Many clients request & love the remote estimating service.

At Pendragon Windows & Doors we offer the full range of composite doors from the award winning composite door manufacturer Endurance Doors. With over 85 styles, 19 colours, nearly 50 glazing styles & a wide range of hardware accessories there are over 80,000 different colour, style & glass combinations to choose from so we are bound to have a door for every taste!

No, we can carry out a design consultation online or on the telephone no one needs to visit your home. To give an accurate quote we will need you to provide the dimensions of the windows & doors, one of the team will check the dimensions for you at a later date if you decide to move forward with the project.

Yes, Pendragon Windows & Doors have a range of both UPVC & aluminium sliding patio doors which are available with a range of glazing options.

Cardiff Window Installers