External Steel Doors
Iconic Doors proudly supplies and manufactures high-performance steel windows and doors using premium Forster steel profile systems, reinforcing our position as a trusted specialist in bespoke steel glazing solutions.
Engineered in Switzerland, Forster systems such as Forster Unico are thermally broken and specifically designed for external applications—making them the recommended choice for the UK climate. Unlike non-thermally broken steel profiles, Forster systems provide superior thermal insulation, condensation control, and long-term durability, ensuring excellent performance in variable and demanding weather conditions.
By utilising Forster profiles, we manufacture elegant steel windows and doors that combine ultra-slim sightlines with modern standards of energy efficiency, security, and weather resistance. These systems are ideal for external steel windows and doors, while also offering refined solutions for internal steel partitions where a cohesive architectural aesthetic is required.
All products are bespoke and made to measure, suitable for residential, commercial, and heritage projects worldwide. From contemporary developments to sensitive restorations, our Forster-based steel systems deliver exceptional performance without compromising on design.
Contact Iconic Doors today to request a quote or discuss your project and discover why Forster steel profiles are the preferred solution for high-quality external steel windows and doors in the UK.
Why Choose Iconic Doors?
Experience Across Complex Projects
From luxury private residences and contemporary office spaces to hotels and industrial conversions, our team has extensive experience delivering steel glazing solutions on projects of all scales. We are well-versed in international logistics and on-site coordination, ensuring smooth execution wherever your project is located.
A Complete Steel Fenestration Solution
Iconic Doors provides a fully integrated approach to bespoke steel windows and doors. We support you through design development and technical engineering, helping you select the most suitable steel profile system—whether Forster or alternative specialist systems. Our comprehensive product range includes thermally broken steel windows, fire-rated steel doors, oversized glazed walls, and architectural steel partitions, allowing you to source all custom steel openings from one trusted manufacturer.
Total Design Flexibility
As a specialist manufacturer, we create steel windows and doors precisely to your specifications. From oversized and non-standard dimensions to specialist glazing, custom mullion layouts, and arched or curved designs, we offer complete design freedom without compromise.
Proven Quality & Dependable Service
Choosing Iconic Doors means investing in premium materials and rigorously tested steel systems built for longevity. Every product undergoes detailed quality checks for structural performance, smooth operation, and flawless finish. We are equally committed to reliable lead times and professional service, supporting you from initial consultation through installation and long-term aftercare.
Frequently Asked Questions
What are thermally broken steel windows, and why do they matter?
Thermally broken steel windows are designed with an integrated insulation barrier—known as a thermal break—that separates the internal steel frame from the external one. This construction significantly reduces heat transfer through the frame, preventing thermal bridging.
In practical terms, thermally broken systems such as those using Forster Unico XS profiles help maintain a comfortable indoor temperature throughout the year—keeping heat in during winter and reducing heat gain in summer. They deliver excellent energy efficiency while preserving the slim sightlines and structural strength that steel is known for.
An added benefit is the reduction of internal condensation and frost in colder climates, helping protect interior finishes and improve occupant comfort. For projects in climates with temperature variation, thermally broken steel windows and doors are essential for meeting modern energy regulations and achieving long-term performance.
How do I request a quote or get more information about Iconic Doors’ Forster steel windows and doors?
Requesting a quote is straightforward. You can contact Iconic Doors via our website or by phone to arrange a free consultation. Our team will review your project requirements, advise on the most suitable Forster steel profile system—or alternative steel solutions—and provide a detailed, transparent quotation.
We frequently work alongside architects, designers, and contractors at the early stages of a project to ensure all technical and design requirements are addressed. Whether you have full drawings or are still exploring options, we’re happy to guide you through the process. Simply share your plans or ideas, and we’ll help you select the right solution with no obligation.
What is the typical lead time for manufacturing steel windows and doors?
Lead times vary depending on the scope, complexity, and level of customisation involved. In general, bespoke steel windows and doors are manufactured within a timeframe ranging from several weeks to a few months.
Smaller or less complex orders can be completed more quickly, while larger projects featuring multiple custom units or specialist finishes may require additional time. When providing your quotation, we will also outline an estimated production and delivery schedule.
We understand the importance of construction timelines and coordinate closely with our clients to ensure smooth planning and on-time delivery. With experience in global logistics, we work efficiently to minimise delays and keep your project on track.