Thinking About Casement Windows? Here’s What You Need To Know

We manufacture and supply a range of energy-efficient and beautifully designed casement windows.

Traditional casement windows are an excellent window replacement choice in the UK. Furthermore, the casement frame comes in several materials, including the popular uPVC, aluminium, and the traditional timber option. Whatever your replacement window needs, St Helens Windows has a window style for your property.

Moreover, we manufacture casement window frames in-house, so you know you are getting a high-quality product. In addition, our casement collection includes the modern flush casement window and the traditional cottage casement window. Furthermore, our windows come with double-glazing options to ensure you get an efficient casement frame for your house. If you are interested in any of our cottage casement window designs, get in touch.

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energy efficiency anthracite grey window

Replacement bay double glazed window unit in anthracite grey

Advantages Of Replacement Windows

A-Rated double glazing can help to keep the heat in
Increase the amount of natural light in your room
Quality profile and glass help to reduce energy bills
Reduce noise pollution with replacement windows
Additional security, locking handles and toughened glass options

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Energy Efficient Casement Windows

Upgrade your home with our high-quality casement windows, designed for durability, energy efficiency, and everyday performance. As one of the most popular window styles in the UK, casement windows offer excellent ventilation, security, and a clean, timeless look to suit both modern and traditional homes. For period properties, our cottage-style casement windows provide a more classic aesthetic while maintaining all the benefits of modern glazing.

At St Helens Windows, every casement window is made to measure using advanced double glazing to help improve insulation, reduce energy bills, and keep your home comfortable all year round. Slim, well-crafted frames also allow more natural light into your space, creating a brighter, more inviting interior.

Available in a wide range of styles, colours, and finishes, our casement windows are tailored to your exact requirements. From manufacture to installation, our experienced team ensures a smooth, professional service, making us a trusted choice for homeowners looking to enhance their property with long-lasting, stylish windows.

Customer Feedback

We like providing excellent customer service. And we feel our customer feedback accurately reflects their experience with us.

    
 
 
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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
  
 
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   Chris Feerick 
 24 July 2025
 
 
  I have a semi-detached bungalow with a total of 8 windows and external doors. Not wanting every room to be done all at once, I broke the work down to 4 visits. This meant I had a lot of contact with the sales team, office staff, surveyor and installers. The Sales staff were always very helpful, contacting me by emails and phone calls. The Surveyor was always punctual and thorough, always giving me an expected time of arrival. The two installers worked well together, treated my home respectfully, worked to a high standard and cleared up all their mess. The total price was also competitive. I have no hesitation in recommending St Helens Windows to others wanting to upgrade their windows and external doors.

Request A Free Casement Window Brochure

Get inspired by our window casement brochure. Our simple guide will help you choose the ideal window for your home. Complete the form below, and a member of our staff will send you a complimentary brochure. We are always trying to improve our customer relations.

Casement Windows – Frequently Asked Questions

Casement windows usually attach to a window frame via multiple hinges. The window casement frame is a versatile choice, ideal for residential properties. At St Helens Windows, we manufacture casement windows utilising one of the leading industry VEKA profiles. Our casement windows are high-performance and durable to all weathers.

Casement windows have continually been a favourite window choice for many UK residents. The casement window is a reliable window that offers many additional features like Georgian bars, dummy horns and various RAL colours.

There are numerous factors to consider when costing replacements windows. Many of these include the choice of window, what window colour and additional specifications for installation of replacement windows. You can request a free window quote by calling 01744 611 203 and speaking to the St Helens Windows team.

Are Replacement Casement Windows Worthwhile?

Request a no-obligation appointment online to learn more about replacement windows.

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Other Popular Window Styles

Bow

Bow windows offer a rounder choice than a bay window. These protrude away from your house, maximising your living area. Plus, our bow windows come in a variety of colours and styles ideal for you.

Bay Glass window with white upvc finish and decorative glass

Bay

Bay windows offer a more rectangular option than a bow window. These protrude away from your property, expanding your living space. Plus, our bay windows come in an assortment of colours and styles ideal for you.

Georgian

Georgian windows are an excellent option that includes smart astragal bars. These windows an ideal if you are looking to keep the primary style of your home. Also, these are available in a mixture of styles.