uPVC & Aluminium Bay Windows

We manufacture and install made-to-measure uPVC and aluminium bay windows, helping homeowners create brighter rooms, additional usable space and wider views from their property.

Bay windows project outward from the exterior wall to create a distinctive angular design, making them ideal for seating areas, feature windows and rooms where you want to maximise natural light. Choose from a wide range of colours, glazing options and finishes to complement both traditional and modern homes.

Our double-glazed bay windows are designed with energy efficiency, security and long-term durability in mind, with professional installation available throughout the North West.

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Made-To-Measure Bay Window Designs

Our team manufactures made-to-measure bay windows using high-quality VEKA window systems. Our windows signify a certain quality, style, and durability. Plus, they add a degree of excellence to your property.

The St Helens Windows team will assist you with your window choice, including frame openings, hinges, bars, handles, glass designs, and more. Plus, we can demonstrate what the A-rated profile means. With the correct assistance from our team, we are sure we will find the ideal window for your home.

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Bay Window Energy Efficiency Explained

As with other replacement windows, quality energy-efficient bay windows can help save you money on your energy bills in the long run. At St Helens Windows, we manufacture bay window frames. Furthermore, our bay windows can help reduce external noise.

Our energy-efficient bay window styles can provide properties with warmth, security, and style. Explore our range of double-glazing options, too.

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Is A Bay Window Worth The Investment?

Option to add extra window space in your home
Window frames that are manufactured in-house
Great choice of window designs and finishes
A variety of double glazing and glass designs
Increase the natural light in your property
Made-to-measure options for different homes and budgets

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Start Your Bay Window Project. Get Your Free Brochure

Time to relax and find your ideal window bay. Check out our comprehensive brochure. Our brochures contain ideas and information that can help you to choose your designs, colour choices, accessories and glass options.

Customer Feedback

We take great pleasure in our customer service. And we believe that our customers’ testimonials reflect their experience with us.

    
 
 
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   Neil Styles 
 21 September 2026
 
 
  Quick efficient and professional service. Absolutely made up with the work they’ve done. Would highly recommend.
  
 
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   Jade Connor 
 4 September 2026
 
 
  ⭐⭐⭐⭐⭐

An absolutely exceptional experience from start to finish. The quality of both the products and the service has been unrivalled, and every single member of the team has been a genuine pleasure to deal with.

Alan in Sales was fantastic — knowledgeable, helpful and professional throughout. Kierra in Billing was equally brilliant and made everything straightforward and easy.

A special mention has to go to the fitting team, Ewan and Tyler. Their workmanship was of an exceptional standard, and their professionalism was second to none. They were a joy to have around — polite, respectful, tidy and clearly took great pride in what they do.

The finished windows look fantastic, and the quality is outstanding. From the initial sales process right through to the fitting and aftercare, the whole experience has been first class.

We honestly couldn’t recommend this company highly enough. Exceptional people, exceptional products and exceptional service — absolutely delighted with the result!
  
 
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   Audrey Lacey 
 18 July 2026
 
 
  We had replacement windows throughout and a new front door from St Helens Windows, installed on June 8, 2026. Everything went brilliantly from the very start - from when the rep Alan came to measure and price (who was not at all pushy, just very nice and helpful), from phone calls and communications with the company, to the actual installation. All excellent. The team arrived on time - Ewan and Tyler - and got stuck in promptly with enthusiasm. The whole process took only two days. At the same time the company installed a new front door for my son at another local address, and he was equally happy with the entire process. I would not hesitate to use the company again in the future for any further work required and would wholeheartedly recommend them. Thank you once again to all at St Helens Windows.
  
 
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   Paula Keaton 
 24 June 2026
 
 
  Fantastic service from ordering to fitting, second to none !! I actually ordered the wrong glass panels for our new door , wasn't any trouble as they ordered new ones quickly and replaced them in no time. Kierra kept us updated with time's re ordering etc and rest of team Jordan, Graham and Jordan for fantastic service and fitting, would definitely recommend 10/10 !!
  
 
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   Kevin Hallwood 
 19 June 2026
 
 
  Jordan the fitter is a really nice lad so hard working just cracked on with the job in hand we are absolutely made up with job didn't leave a mess cleand up as he whent on once again brilliant lad.
  
 
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   alan sephton 
 30 May 2026
 
 
  I can't fault st helens windows I had all my windows and doors fitted by ewan and Tyler plus my gutters replaced from the office staff to the fitters great service can't recommend highly enough
  
 
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   Richard Joanes 
 20 May 2026
 
 
  Exceedingly happy with the installation and the quality of our new doors.
  
 
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   Roman Levitskyi 
 20 May 2026
 
 
  This company did great job
They installed for me 4 windows and external door
I recommend them
  
 
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   mark horrocks 
 16 April 2026
 
 
  Highly recommended, used several times over the years on windows/doors/conservatories/fascia's/guttering.
  
 
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   Mike Grimes 
 14 March 2026
 
 
  Paul and his colleague were fantastic. They came and did an amazing job. No fuss, no mess, no drama. Expertly finished the windows and we could not be more pleased with them. Thank you St Helens Windows! Highly recommend
  
 
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   Claire Leech 
 12 March 2026
 
 
  Fantastic service from the first initial visits, survey and fitting. All your employees where professional kind and the service and end result has made our year. Would recommended to anyone for home improvements and excited to have them look at future work in our home. 😃
  
 
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   Karen Campbell 
 24 February 2026
 
 
  Very professional. Great service. Wouldn’t go anywhere else. Great windows.
  
 
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   Janette Critchley 
 1 January 2026
 
 
  We had our front door replaced by this company.  They did an excellent job.  Would recommend.
  
 
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   joan conroy 
 27 November 2025
 
 
  The job was in great time the man was friendly and clean and im very satisfed with this companyx
  
 
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   sara ridgway 
 27 November 2025
 
 
  We had a great experience with St. Helen’s Windows from the initial meeting for the quote to the installation. Windows and doors are all of high quality and all of the engineers were very helpful and very tidy workers who left no mess at all.
  
 
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   Anthony McDonnell 
 3 November 2025
 
 
  Quality excellent, lead in longer than would have wished but probably worth the wait
  
 
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   david benson 
 30 August 2025
 
 
  Very good information on the order taking visit and on the measuring up visit. Quick service from order being placed to the instalation date.
The removal of old fittings and fitting of replacements was completed in the set time and to a very high stanadard by the fitter and he made sure that he kept everything neat and tidy.
The total service from first visit to completion of the job was first rate and we could not of been more satisfied.
WELL DONE  to all concerned.
  
 
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   Raymond Hampson 
 28 July 2025
 
 
  Very pleased with St Helens Glass. Extremely satisfied with the workforce all good tradesmen, very cooperative and competent
Although everything did not go according to plan. They were quick to respond and rectify the problem.
I would certainly recommend the company.
  
 
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   QAS WES 
 25 July 2025
 
 
  No hassle approach from start to finish. 2nd time I have used this company, and I have been very pleased on both occasions
  
 
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   kenneth griffiths 
 24 July 2025
 
 
  Good service from sales team at good price. Product excellent quality and installed on time with minimum disruption by works team who knew what they were doing. Very satisfied and would use again

Upgrade Your Home With A Made-To-Measure Bay Window

Book your complimentary appointment to find out more. Send us a preferred day and time online.

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Best Window Styles

Bow

Bow windows offer a rounder option than a bay window. These protrude away from your home, maximising your living space. Plus, our bow windows come in a range of colours and styles perfect for you.

Casement

Our casement windows are amongst the most popular window replacements in the UK. They are flush against the wall and offer enhanced energy-efficiency. Plus, these are a cost-effective option for most homes.

Georgian

Georgian windows are a traditional alternative that includes stylish astragal bars. These windows are ideal if you are looking to keep the house original style. Furthermore, these are available in bow, bay, and casement.