Request a Quote
CK Steel & Aluminium Doors
We design and supply bespoke steel doors and windows, combining slim sightlines, strength, and refined architectural detail. Based in Cheltenham, we work across the UK, delivering tailored solutions for both residential and commercial projects. Each system is designed to enhance light, proportion, and performance within the space it’s created for. With a focus on precision and craftsmanship, our products offer long-term durability without compromising on design. From contemporary homes to larger developments, we create doors and windows that are as considered as the spaces they sit within.
- Steel Systems - A wide range of bespoke doors and windows tailored to each project.
- UK-Wide Delivery - Based in Cheltenham, supplying projects across the UK.
- In-House Production - Complete control over manufacturing for consistent quality and precision.
Steel Doors Designed for Modern Living
What Can You Expect
Choosing new steel or aluminium doors and windows is a significant decision, and we believe the journey from first idea to finished installation should be just as considered as the product itself. At CK Steel & Aluminium Doors, we have refined our process over years of delivering bespoke glazing across Cheltenham, the Cotswolds, and the wider UK, working on everything from sensitive Regency restorations to large-scale contemporary developments. We know that every property is different, and every client has a unique set of priorities, whether that is preserving the character of a period home, maximising natural light in a modern extension, or meeting strict fire safety requirements on a commercial project. That is why our process is designed to be collaborative, transparent, and straightforward from the very first conversation. No jargon, no hidden stages, no unpleasant surprises. Just a clear path from your initial enquiry through to the moment your new doors and windows are fitted and performing exactly as they should.
Your First Conversation
Tell us about your project. Whether it is a Regency townhouse in Montpellier or a new commercial build in Gloucester, we will explore your design ambitions, material preferences, and any technical requirements right from the start.
Transparent Pricing
We put together a clear, itemised quotation that covers every detail, from profiles and glazing to finishes and delivery. No guesswork, no hidden charges. You will know the full cost before any commitment.
Deposit and Measurement
A deposit locks in your production slot. Within roughly 7 working days, our surveyor arrives on site to record precise dimensions and evaluate the structural conditions, ensuring every frame is manufactured to an exact fit.
Design Sign-Off
Our team converts the survey data into detailed technical drawings showing sightlines, bar configurations, and opening arrangements. You review, request adjustments if needed, and approve the design before fabrication begins.
Built to Order
This is where we outpace the competition. While many steel and aluminium glazing suppliers ask you to wait 12 to 16 weeks, our workshop delivers fully bespoke, precision-crafted doors and windows within 8 to 10 weeks of drawing approval. Faster turnaround, same exacting standards.
Fitting and Handover
Our local Cheltenham-based installation team can handle the complete fitting, or we can supply the finished units to your own builders with full technical documentation. Whichever route you choose, we ensure a seamless finish.
A Guarantee You Can Rely On
Every product that leaves our workshop carries a 5-year warranty against defects in both materials and craftsmanship. We build our steel and aluminium systems to perform for decades, and this guarantee reflects the confidence we place in every frame, hinge, and pane of glass we deliver.
Bespoke Heritage Windows and Doors in Cheltenham
At CK Steel & Aluminium Doors, located in Cheltenham, we specialize in providing high-quality, durable solutions that combine functionality with modern design. With a focus on steel, our experienced team delivers top-notch heritage windows and doors that ensure security, energy efficiency, and unmatched aesthetic appeal. We are committed to excellence, offering customized solutions to meet your specific architectural needs. Our heritage windows are designed to replicate the slim, elegant lines of traditional frames while providing the modern benefits of thermal performance. To complement these, our range of heritage doors offers a robust yet stylish entrance for any home or commercial space. Whether you are looking to upgrade a period property or add industrial character to a new build, our products offer exceptional style. By choosing our integrated system of heritage doors and windows, you ensure a seamless and sophisticated look across your entire facade. At CK Steel & Aluminium Doors, every installation of heritage windows and doors reflects our dedication to unparalleled service and quality. Discover the perfect blend of performance and heritage charm with our Cheltenham-based experts.
Your Questions About Bespoke Steel and Aluminium Glazing in Cheltenham, Answered
Cheltenham's Regency heritage and the surrounding Cotswold landscape create a unique backdrop for architectural glazing. Whether you are restoring a period property in Montpellier, building a contemporary home near Pittville Park, or planning a commercial fit-out in the town centre, the questions below address the topics our clients raise most frequently. Need more detail? We are always happy to chat.
What kind of budget should I set aside?
Since all our work is made to order, pricing is shaped by the specifics of each brief rather than a fixed rate card. To help you plan, though, most clients in the Cheltenham and Gloucestershire area find that a single-leaf internal steel door lands somewhere between £2,500 and £4,500, external doors begin around £3,800 and can exceed £7,000 for more elaborate designs, steel-framed windows generally fall in the £900 to £1,600 per square metre bracket, and internal screens or partitions tend to sit between £1,500 and £3,000 per square metre. Variables such as overall dimensions, glazing type, powder-coat colour, hardware selection, and fire certification all influence the final number. After an initial conversation about your project, we issue a straightforward quotation with every cost clearly broken down.
How long will the whole process take?
Most projects reach completion within an 8-week window, measured from the point at which you approve the final drawings to the day our team finishes installation. Highly complex commissions or larger multi-phase developments may push beyond that timeframe. We maintain regular contact throughout fabrication and delivery, so you are never left wondering about progress.
Is there a charge for the initial measurement visit?
No cost at all. We arrange a free site visit for every project, whether it is a townhouse in Lansdown or a barn conversion out in the Cotswolds. Our surveyor records precise dimensions, evaluates the existing openings, and explores design possibilities with you face to face, paying particular attention to any quirks of the building such as uneven reveals or original period features that demand a tailored approach.
Should I go with steel or aluminium?
Although our expertise spans both materials, the majority of our clients ultimately choose steel, and the reasons are straightforward. Steel profiles can be engineered down to approximately 20 mm, giving you remarkably slim sightlines, while aluminium typically needs 40 to 60 mm to deliver comparable structural rigidity. On durability, steel comfortably exceeds 50 years of service life with basic upkeep, whereas aluminium tends to sit closer to 30 to 40 years. Thermal performance is no longer a differentiator either, as today's thermally broken steel systems satisfy Part L building regulations without issue. The one area where aluminium holds an advantage is upfront cost, coming in roughly 20 to 40 per cent lower than a steel equivalent. For Cheltenham's wealth of Regency and Victorian properties, where preserving elegant proportions is paramount, the slimness and authenticity of steel make it the natural fit. That said, if your project calls for aluminium, we are equally equipped to deliver.
What do the E30 and EI30 fire ratings actually mean?
In the residential sector, the specification we encounter most often is E30. A door carrying this certificate will contain flames and smoke on one side for a minimum of 30 minutes. Our E30 units are constructed with 40 mm profiles and 20 mm glazing bars. Where a higher degree of protection is mandated, the EI classifications come into play. An EI30, EI60, or EI90 door resists fire, smoke, and radiant heat for 30, 60, or 90 minutes respectively, and is built with profiles and bars of at least 40 mm. Toughened safety glass across the fire-rated range varies from 8 mm to 16 mm in thickness depending on the rating. Every component, hinges included, is fabricated from 100 per cent steel, and we offer both single-leaf and double-leaf configurations. For commercial premises, HMOs, and multi-occupancy residential buildings in Gloucestershire, Building Regulations Approved Document B will typically dictate the required standard. We can review your fire strategy and recommend the appropriate specification.
How does Crittall differ from Crittall-style glazing?
The name Crittall belongs to Crittall Windows Ltd, a manufacturer established in Essex in 1884. Only their factory produces genuine Crittall-branded products, which rely on proprietary profile systems and often involve waiting periods of 12 to 16 weeks or more. When people talk about Crittall-style glazing, they are referring to steel windows and doors built by independent specialists such as CK Steel & Aluminium Doors that achieve the same distinctive look: slim frames, clean grid patterns, and an industrial elegance. The practical upside of choosing a Crittall-style system is that every element is fully customisable to your exact requirements, turnaround sits around 8 weeks, and the price point is typically 15 to 30 per cent below genuine Crittall. Visually, the end result is remarkably difficult to tell apart.
Is it possible to fit steel glazing in a listed building?
Without question. Cheltenham is home to an extraordinary concentration of Grade II and Grade II* listed buildings, particularly across the Montpellier, Lansdown, Pittville, and Tivoli conservation areas, and we have extensive experience navigating the planning requirements that come with them. Steel is frequently deemed an acceptable replacement material, especially in properties from the 1920s through the 1950s where the original fenestration was itself steel-framed. You should be prepared to apply for Listed Building Consent through Cheltenham Borough Council, and if your property falls within a conservation area, an Article 4 Direction may further restrict what you can do under permitted development. We support the process by preparing detailed drawings and material specifications that strengthen your application, and we are happy to communicate directly with the council's conservation team if it helps move things along. Consent timelines in the Cheltenham area generally run between 8 and 13 weeks, so early engagement is strongly advisable.
What parts of the country do you cover?
Our workshop is in Cheltenham, and we regularly deliver projects throughout Gloucestershire, including Gloucester, Tewkesbury, Stroud, and Cirencester, as well as the wider Cotswolds region. Beyond that, we serve clients in Oxford, Swindon, across London (including Enfield, Harrow, and New Malden), and indeed anywhere in the UK for the right project. If your location is not listed here, reach out and we will confirm whether we can accommodate you.
Official Partner of Charlton Kings Interiors
We are delighted to be an official partner of Charlton Kings Interiors, a leading manufacturer of steel doors and windows. This partnership enables us to supply high-quality products that seamlessly combine refined design with robust performance, helping us meet and exceed the expectations of our clients.
