When it comes to fire safety within a building, internal steel fire doors are a critical component. These doors not only provide robust fire resistance but also enhance the overall safety and compliance of your property. At Colin’s Sash Windows, we specialise in high-quality internal steel fire doors designed to meet UK fire safety regulations while catering to various project requirements. Below, we break down everything you need to know to choose the perfect internal steel fire door for your project.
Why Choose Internal Steel Fire Doors?
The Internal Steel Fire Rated Door is an essential part of any building’s passive fire protection system. Designed to compartmentalise spaces and prevent the spread of fire and smoke, it enhances safety by giving occupants valuable time to evacuate while minimising property damage.
In the UK, fire doors must comply with strict safety regulations, and the Internal Steel Fire Rated Door meets Building Regulations Approved Document B and is certified to BS 476 Part 22 or EN 1634-1 standards. By choosing Internal, you ensure full compliance while benefiting from exceptional durability, security, and performance.
Made from high-quality steel, the Internal Steel Fire Rated Door offers superior fire resistance and is ideal for commercial buildings, offices, and industrial settings. With a variety of finishes and configurations, it can be customised to meet your project’s design needs without compromising safety or regulatory compliance.
For general internal applications, we also offer Internal Steel Doors and Aluminium Internal Doors. While these doors provide robust security and modern aesthetics, they are not fire-rated. Internal Steel Doors are known for their strength and durability, making them suitable for commercial and industrial use, while Aluminium Internal Doors offer a lightweight, corrosion-resistant option ideal for schools, healthcare facilities, and residential developments.
Our Internal Steel Fire Door Options
We offer three distinct internal steel fire door solutions, each tailored to different requirements. Whether you need a cost-effective option or a premium, sleek design, we’ve got you covered.
Product: 1st Option
Description | Fire-rated glass only, standard steel frame |
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Starting Cost (900w x 2100h) | £2,150 incl. VAT |
Accessories | NEMEF accessories: mortise lock, lock catch, certified lever handles (silver), door closer (JANSEN certified Geze TS2000 – black). E30 certified substitute (requires inspector approval). |
Appearance | Standard steel door appearance |




Product: 2nd Option
Description | Fully fire-rated door with E30 certificate (Jansen frame) |
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Starting Cost (900w x 2100h) | £3,200 incl. VAT |
Accessories | JANSEN accessories: mortise lock, lever handles (silver), door closer (JANSEN certified Geze TS2000 – black) |
Appearance | Thicker than standard steel doors |
Product: 3rd Option – NEW!
Description | Fully fire-rated door with E30 certificate (Ottostumm frame) and slimmer frame |
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Starting Cost (900w x 2100h) | £3,900 incl. VAT |
Accessories | JANSEN accessories: mortise lock, lever handles (silver), door closer (JANSEN certified Geze TS2000 – black) |
Appearance | Standard steel door appearance |






Product: 4th Option – NEW!
Description | Fully fire-rated door with E30 certificate (Jansen ART 15 frame), slim frame, smokeproof |
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Starting Cost (900w x 2100h) | £4,300 incl. VAT |
Accessories | JANSEN accessories: Door closer; unlatched system with pull handle, softclose |
Appearance | Thicker than standard steel doors |
Key Considerations When Choosing an Internal Steel Fire Door



Fire Rating Requirements:
Ensure the metal fire doors meets the required fire rating (e.g., E30) as specified by your building inspector or fire risk assessment.



Certification:
Always choose doors that are certified to UK standards (BS 476 Part 22 or EN 1634-1) and come with the necessary documentation.



Aesthetic Preferences:
Consider the design and finish of the fire exit door to ensure it complements the overall look of your building.
Lead Time:
All internal fire escape doors have an estimated lead time of 10 weeks. Plan your project timeline accordingly.
Get a Quote Today!
Ready to find the perfect internal steel fire door for your project? Contact our team today for more details or to request a personalised quote. Let us help you make your building safer, compliant, and visually stunning.
Download Our Internal Steel Fire Rated Doors Brochure





