Decorative Lead Windows

Choose John Williams decorative lead windows and create an elegant, warmer and more secure home.

Quality craftsmanship, high standards of service, and exceptional value for money through competitive prices have been the hallmarks of John Williams for more than 40 years.

From initial survey through to design and manufacture, installation and aftercare, we'll improve your home with durable yet beautiful double-glazed Lead Windows, delivering quality every step of the way.

Decorative Lead Windows - Features & Benefits

Choose double-glazed decorative windows from John Williams and you will enjoy all these home improvement benefits:

  • Make your home warmer: John Williams windows use advanced glass technology designed to minimise draughts and heat loss, making your home warm and cosy
  • Enjoy peace of mind with improved security: All John Williams decorative lead windows incorporate corrosion resistant multi-point locking mechanisms and the glazing is fitted from the inside, so your home is more safe and secure
  • Relax in peace and quiet: Make your home a peaceful sanctuary with John Williams decorative windows, designed to significantly reduce the impact of outdoor noise
  • Add long-lasting value to your property
  • Enhance the look of your home with beautifully designed double-glazed decorative windows
  • Benefit from decorative lead windows unique to you - tailor-made in size, shape, function and character to your exact requirements
  • Reduce heating bills thanks to our energy-efficient windows
  • Spend less time and money cleaning and repairing - our decorative windows won't rot, flake, rust or fade
  • Enjoy peace of mind with our 10-year guarantee

Decorative Lead Windows - Energy

Improve the energy efficiency of your home, reduce your carbon footprint and save money on heating bills with double glazed decorative lead windows from John Williams.

All our casement window products are “A”-rated as standard - the highest energy efficiency rating available. By fitting John Williams decorative lead windows you will reduce heat-loss and minimise draughts, and so you'll be less reliant on your heating.

If your heating is on less or at lower temperatures, you're cutting down on the amount of fossil fuels needed to heat your home, reducing the carbon dioxide that goes into the atmosphere and so minimising your carbon footprint.

Latest glazing technology such as soft coat low emissivity glass offers even more energy-saving benefits by reflecting heat back into the room. For a warm, cosy home and reduced heating bills choose John Williams double glazed decorative lead windows.

Decorative Lead Windows - The qualifications for the job

From the products we manufacture to the installation and customer services we provide, quality remains the hallmark of John Williams.

We remain one of the few companies to hold the British Standards Institution award for manufacture and customer care.

For even greater assurance, we hold no fewer than four Kitemarks - nationally recognised seals of approval - for the quality of our products and their excellent energy ratings.

And as a member of FENSA, you are safe in the knowledge that our replacement windows and doors comply with the current Building Regulations for both England and Wales.

With our products made, supplied and fitted using in-house resources, we operate stringent quality control and testing at every stage.

In this way, John Williams can maintain such high standards, and reward our customers with the very best service.

Decorative Lead Windows - Colour Finishes

Beautiful colour tones to suit your home…

Create a home as individual as you are with coloured UPVC decorative lead windows from John Williams.

Discerning homeowners understand the great benefits and advantages that professionally designed, custom-made, and installed coloured UPVC decorative lead windows products can offer!

Timber alternatives, so prone to rotting and splitting, can cost as much as three times more than a superior quality John Williams UPVC alternative replacement - so it's never been a better time to invest in colour!

As well as brilliant white, UPVC windows from John Williams come in a range of tasteful colours, making it easier than ever to improve your home with that extra special touch.

Together with our authentic grained finishes, our fabulous range of colours will fully complement and truly enhance any home.

Coloured Windows

Create a home of true distinction with beautifully coloured decorative lead windows from John Williams

Colour your windows

Decorative Lead Windows - Security

We want you to feel safe and secure in your own home. With decorative lead windows from John Williams you can enjoy complete peace of mind about the security of your loved ones and your property.

Our UPVC casement double-glazed windows meet all British Standards requirements for security. Our multi-point locking system is endorsed by the police with a Secured by Design award.

We also fit stainless steel multi-point locking mechanisms and lockable window handles, and can install laminated glass for further security if you so wish. In addition, glazing is fitted from the inside of our decorative windows to prevent intruders from prising their way in.

All John Williams products are designed and manufactured by us, and rigorously tested to ensure they can withstand attempted break-ins. In this way we are confident that your decorative lead windows are safe and secure.

Decorative Lead Windows - Guarantee

THE JOHN WILLIAMS 10-YEAR GUARANTEE

Invest in any products from John Williams, and you are investing in peace of mind for years to come.

That’s because we have been successfully designing, manufacturing and installing windows, doors, conservatories and roofline products for hundreds of thousands of customers for more than 40 years.

Because of the confidence we have in the superior quality of our materials, and our craftsmanship, we guarantee all our products for 10 years.

John Williams' products are designed to last, and our excellent customer service means we go on looking after you long after installation.

We are fully compliant with relevant industry bodies including the Fenestration Self-Assessment Scheme (better known as FENSA).

And with our Price Promise, all this peace of mind is offered at prices giving you exceptional value for money. 

Decorative Lead Windows - FAQs

Yes, we have a very flexible scheme that offers a range of very convenient and affordable arrangements to fit in with your budget. It's easy to apply so transforming your home is more affordable using our finance options - click here to find out more about our home finance options.
All double glazed windows from John Williams are guaranteed for 10 years.
Normally the visit will take about an hour for our designer to make all the necessary measurements and discuss all the design options you can choose from.
It all depends on the number and type of windows you have chosen. If you have a new property, the installation is usually quicker and simpler. As a guide, a complete full set of windows for your house can take up to 4 - 5 days to install.
Yes, John Williams is a leading regional manufacturer of UPVC double glazed windows. That's why we can offer you some of the best products and prices available on the market.
John Williams' replacement windows and doors are available in a range of colours. Even though the standard manufactured colour is white, we also offer twelve different colours. As well as the highly popular warm white windows, you can also choose traditional wood grains in the rich, dark elegance of Rosewood, mahogany or the attractive lighter Oak option. There's also our exciting new range which includes cream, whitegrain, green, grey, rustic cherry and black. You can combine any of these colours with white if you prefer, so you can have the outside of your home in a different colour to the inside. We also offer an almost limit less range of special colours to suit your own taste and preference. Call us on 0800 66 00 55 to discuss the options.
Yes. Every window in our Tilt and Turn range is made to improve and enhance your home. Click here to find out more about our Tilt and Turn range.
Because we specialise in high grade UPVC, we don't sell windows or doors made from wood. However, we do offer a range of realistic woodgrain effect windows that look as good if not better than timber itself. So with our realistic wood effect windows you can achieve the traditional look of timber but without the continual maintenance problems like painting, rotting and warping of real wood.
We are able to offer Pilkington K glass if required. However, our standard sealed units do not contain K glass as the technology has progressed considerably and the new soft coat low e glass is now more efficient. In addition, K glass has a slightly brown tint and most customers prefer glass without this.
The A rating system tells you how energy efficient your windows are according to the UK-wide BFRC Rating Scheme. This system is recognized within the Building Regulations to show how your replacement windows comply with the scheme. The rating scheme is from A to G - with A being the highest rating.
Yes, we can offer you a supply only service on UPVC windows and doors for orders outside of the UK. However, we are not able to offer a shipping service so you will need to collect your goods from our factory and pay for the goods when you order them. Please contact us on 0800 66 00 55 to discuss your detailed requirements.
John Williams offers one of the widest product ranges available so we can usually provide you with a very close match to your original windows. If not, our outstanding range of styles, materials, glass types, colours and window frame furniture will enable us to provide you with an attractive alternative.
Yes, John Williams offers a range of traditional products that are suitable for listed properties or those in conservation areas. You may require permission from your local authority. John Williams will take care of the application process and liaise with the relevant authorities. For more information call 0800 66 00 55.
Yes, we can sell individual windows made to your exact measurements and specifications.
Yes. FENSA (Fenestration Self-Assessment Scheme) ensures replacement windows and doors comply with the current Building Regulations in both England and Wales. When replacing windows and doors, you must obtain a certificate of thermal performance compliance from FENSA or from Local Authority Building Control. FENSA allows John Williams to offer our own compliance certificates, so we do this for you.
According to the BFRC you could be losing heat, and therefore money, if your home is single glazed or your double glazing was installed before April 2002. By installing John Williams double glazed windows you can trap the heat and save energy, reducing your energy bills by more than £400 a year.
Because every home is different, the shape and size of your windows and doors will be different too. That means everyone has different requirements and all our windows and doors are tailor-made specifically for your home. For a free, no obligation discussions please call our freephone number on 0800 66 00 55.
Fixing net curtains and lightweight blinds is fine. However, to hang heavier blinds and curtains, we suggest you use a curtain rail fixed into the wall above the window.
Yes indeed, at John Williams we supply and install all our own products. This guarantees the quality of our products. Our installers are all fully trained and accredited, qualified to install our products to the rigorous standards that our customers trust and rely on. For more information about our products and installers, please contact our free advice line on 0800 66 00 55.
Yes - we use our own fully trained installers, although for a few products we will instruct carefully selected partners to carry out the installation on our behalf. We only use fully accredited installers who are experts in their field.
We are not able to repair windows from other suppliers, but all our windows have comprehensive long-term guarantees to give you total confidence in their quality.

Decorative Lead Windows - Offers

50% OFF DECORATIVE LEAD WINDOWS

Yes it's true... Order the latest energy saving PVCu Replacement Windows from John Williams this month and SAVE AT LEAST 50% OFF

Finance available, Subject to status. Terms & conditions apply.

Decorative Lead Windows Discounts

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Choosing the right window for you

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