About us
Established more than 40 years ago, John Williams is one of the largest and most respected home improvement companies in North Wales, Cheshire and the North West of England.
We offer superior quality products and the highest standards of service at affordable prices.
Our enviable reputation for craftsmanship, innovation and development has resulted in us being recognised with an impressive array of professional credentials and national awards.
We are one of only a handful of companies in our industry to have achieved this status.
This is your guarantee of excellence from a company you can trust.
National Award-Winners
John Williams scooped two top honours at the National Glassex Industry Awards,
beating all other local and national names in the industry.
- UK Customer Care Window Company of the year
- UK Window Installation Company of the Year
What We Do
John Williams designs and manufactures products with computer-aided precision in our purpose-built, state-of-the-art manufacturing facility.
In so doing you can have even greater confidence that all products from John Williams are made to the most modern specifications and the highest standards.
That’s because every stage of the production process is subject to stringent quality control and testing. We use only the best materials available and we’re at the forefront in testing for durability and safety.
Our commitment to quality is demonstrated through our British Standard quality awards for manufacturing and customer care.
We’re also renowned for our quality of our products and their installation, as our qualifications and accreditations testify.
Our Products
Here is a summary of the products we manufacture, supply and install. Click on one to learn more.
- Windows – Energy-efficient UPVC double glazed windows in a range of styles, designs, sizes and colours
- Doors – Energy-efficient UPVC doors in a range of styles, designs, sizes and colours
- Conservatories – elegant UPVC house extensions featuring energy-efficient double glazing and a whole host of beautiful design and style options
- Coloured Products - coloured UPVC windows and conservatories to create that really special look for your home
- Orangeries – elegant UPVC extensions featuring energy-efficient double glazing, period features and a whole host of beautiful design and style options
- Veranda Glass Extensions – breathtaking glass extensions in a modern style, blurring the boundaries between indoor and outdoor living
- Roofline – protect your home from the elements with our comprehensive range of roofline fixtures – guttering, soffits, fascia and bargeboards, downpipes, cladding and gutter guards
Latest Offers
John Williams have a reputation for quality, reliability and affordability. Always offering the widest choice and superb value has helped make us the market leaders in North Wales. And by maintaining a commitment to product development, our fabulous home improvement range have become the most technically advanced available.
For more information simply request a FREE Quotation or Book an Appointment.
Alternatively you can call us free on 0800 66 00 55
Offers cannot be used inconjunction with any other offer or promotion. Terms & conditions apply - ask in showroom for full details. Finance subject to status.
What Will it Cost?
We don’t publish prices on our website because all our products are bespoke and tailored to your personal requirements.
John Williams does not guess prices because we offer such a large range of styles, colours and glazing options that it would be impossible to pre-judge your dream design. That’s for you to decide!
We visit your home to assess your requirements properly, and advise on design and installation, including any building work. In that way we can give you an informed, accurate quote so you know exactly what you’re paying for. No nasty surprises or extra charges later on.
Unlike most other companies we manufacture our own products and control the process from start to finish to ensure your complete satisfaction. This way we can offer a superior quality product and service at the excellent, quoted price.
We guarantee this through our Price Promise – click here for details.
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 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.
Energy Saving UPVC Products
Install John Williams double glazing and you can significantly improve the energy efficiency of your home, reduce your carbon footprint and save money on heating bills.
John Williams windows are A- rated as standard - the highest energy efficiency rating in the industry.
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.
Reduce heat-loss and minimise draughts, and you’ll be less reliant on artificial heating. Having your heating on less often or at a lower temperature reduces the amount of fossil fuels needed to heat your home, so less carbon dioxide goes into the atmosphere.
We offer energy saving glass technology including coated low emissivity glass. It reflects heat back into your home so you don't have to use as much heating to stay warm.
Testimonials
The John Williams after sales service is the best in the business. We take the care and have the commitment to ensure it stays that way, to give you complete peace of mind. We’re proud when we receive letters from satisfied customers, endorsing our approach to manufacture, installation and after sales service.
Following are a few examples of letters from satisfied customers over the years.
" I was looking for new windows for my home. Double glazing salesman can be tricky but not so at John Williams. I wanted a company that I could trust, that means confidence, reliability, a company I can believe in and have implicit faith in, John Williams is that company. I was worrying about after sales service, I need not have worried, and you need not worry either. I have trusted John Williams, so can you."
Beata Brookes, CBE.
Ex Chairman of Welsh Consumer Council
" Can I take this opportunity to say how pleased mum and I have been with our new windows? We have felt much warmer since they were fitted. How nice they look too! I need to praise your installation team too. They have been so professional, efficient, clean and well mannered. Reliable and a credit to the company. Thank you again.
I have been impressed with every aspect – from sales, engineering, fitters and in the honesty of the company. I have recommended John Williams too many already. Thank you. Diolch yn fawr iawn. Stella Edwards."
Stella and Megan Edwards
Wrexham
" My husband and I were apprehensive about installing anything other than hardwood windows in our barn conversion. However, we are extremely pleased with the windows recently installed at our home. Every member of staff that we dealt with from the sales negotiator to the fitter were professional and very well trained, and we were particularly impressed with the fine quality of the fitting, neat and clean and tidy with no mess! Our initial apprehension has turned into a conviction that we have made the right decision in choosing your window design. Time will also hopefully confirm our decision! And our barn will hopefully be much warmer this winter. Please thank all your staff for their excellent service."
Mrs Brace-Girdle
Cheshire
" Following completion of a substantial installation at my home recently, I feel compelled to write to you regarding the installation team.
Whilst the job of installing 15 windows and a front door was substantial within the allowed timescales, I am writing to express my appreciation, as well as that of my wife, for the high standard of work carried out together with the excellent customer care skills displayed in explaining to us in simple terms what some of the pre-existing windows illustrated as challenges due to previous faulty fitting and how these would be rectified.
The installation team should be commended for their work and positive and helpful attitude.
I certainly will be recommending your company to my friends in the coming months.
Thank you for the highly satisfaction production, delivery and installation of the agreed units."
J P Williams
North Wales
Finance Options
The John Williams Privileged Customer Account opens the door to the easy way to pay for your windows, doors and conservatory.
Not only will it increase your purchasing power, it also allows you the freedom to choose the finance plan that suits you. This offers exclusive benefits that are not available should you choose to fund your own home improvement by other means.
In the comfort of your own home one of our advisors can help you select the most appropriate Privileged Customer Account scheme for your particular needs and arrange a free written quotation.
In most circumstances you will receive a decision the next working day following your application – and your home improvement dreams can become reality.
Call now on 0800 66 00 55 to find out more.
Price Promise
The John Williams Price Promise.
We are so certain you will not find another company that provides products the same as ours in terms of specifications, high standards, features, benefits, quality and service at lower prices, that we are prepared to guarantee it with our Price Promise:
“If within 7 days of placing your order you do find such a company we will match the price”
Perfect Installations
Whatever your project’s scale or scope, professional service comes as standard from John Williams craftsmen.
Computer-aided design, state-of-the-art production processes and rigorous quality control ensure precision at every stage.
When we install our products we rely solely on our own highly skilled professionals to do the work. They are trained to be punctual, courteous, considerate and careful with your possessions, and complete the work without delay, with the minimum fuss and disruption.
Experienced John Williams’ professionals manage each project from concept to completion. We’ll even take care of planning permission or building regulations approval, if required.
To our knowledge, John Williams is one of the few companies in the region to hold the coveted BSI quality award for manufacture and customer care.
You can have confidence in our service, every step of the way.
Our Qualifications
John Williams was the first company in the region to achieve British and European standards for the manufacture of windows, doors and conservatories.
We’ve built on this quality and our products have been awarded four British Standard Institute Kitemarks, certifying them to the highest British Standards.
The BSI Kitemark is the symbol of quality and safety and offers proof that a product and service meets very high standards. We are only one of a handful of companies in our industry to achieve this status.
Our windows exceed the security demands of the official Police Preferred Specification - a scheme to reward the most secure product designs.
These qualities make up your guarantee of excellence from the award-winning company you can trust.
Contact Us
If you have any questions about any of our products or the services we offer and how they could enhance the look and feel of your home, please get in touch.
Head Office
John Williams Home Improvements Ltd.
Williams House
Blackmarsh Road
Mochdre
Colwyn Bay, LL28 5HE
Head office: 01492 545 777
Sales: Call Us Free 0800 66 00 55
