When safety matters but space is limited, our 35mm internal fire doors offer a practical solution. Designed to fit into slimmer existing frames, these doors provide reliable fire protection without compromising your room layout or design plans.
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Fully Finished Internal Fire Doors | Climadoor
Whether updating a busy guest property or adding an extra layer of reassurance at home, this range is built for convenience and confidence.
35mm fire doors are especially well-suited for houses in multiple occupation (HMOs), smaller hospitality venues like B&Bs, or any setting where traditional 44mm fire doors are simply too thick for existing frames.
These doors offer the essential fire resistance you need, while fitting into tighter architectural footprints. They're a smart choice where reassurance and retrofit compatibility are equally important.
Browse a varied selection featuring everything from warm oak veneers to smooth, modern white prime+ surfaces. Whether you're updating a traditional hallway or refreshing a contemporary apartment, these options work well across a variety of décor preferences. Each design is crafted to integrate with both characterful and clean-lined interiors.
Oak fire doors are ideal for adding character and warmth, whereas our white options offer a clean and fresh look.
Every 35mm fire door in this category has a solid construction using a flush grooved MGO (magnesium oxide) sandwich board core. This robust and fire-resisting material delivers a solid, dependable feel and proven fire performance.
Oak models are finished with a real oak veneer, bringing natural grain and warmth to the surface, while white versions use a clean Prime+ finish, ideal for a light, neutral palette.
No need for extra painting or treating, every door in this category comes fully prefinished. That means once delivered, your installer can get straight to work. This time-saving detail helps you move quickly from delivery to final fitting, ideal when juggling multiple projects or tight timelines.
Tested and rated to FD30 standards, each door is engineered to resist fire for up to 30 minutes. This helps to slow the spread of flames and protect your home.
These are not just attractive interior features, they're fire rated doors that provide functional safety upgrades, offering valuable time in the event of an emergency. You can feel confident placing them in areas where protective performance matters most.
This collection is supplied in the most frequently requested imperial sizes, making it straightforward to find the right match for your project. Whether you're replacing old doors or specifying for a new build, these sizes make the selection process more predictable and stress-free.
While installation is straightforward, fire doors should be fitted by a qualified tradesperson to ensure everything functions as intended. A precise fit guarantees not only a smooth swing but also maintains the door's fire-resisting capability. Proper fitting makes all the difference when protection is on the line.
Sustainability is central to our supply chain. These fire doors are produced using responsibly managed timber and materials, offering peace of mind for environmentally conscious buyers. By choosing from this range, you’re supporting better practices and longer-lasting value.
Ideal for loft conversions, under-stair cupboards, commercial buildings or anywhere a standard-width fire door simply won’t work, these doors offer a flexible solution without sacrificing protection. They also make excellent upgrades in period homes where frame sizes vary. Whether for added safety near a kitchen or to meet regulations in rented spaces, they provide reliable coverage in areas where traditional models fall short.
This category is built for those who won’t compromise on either function or form. Thoughtfully constructed with high quality materials, well-finished, and always certified, our 35mm internal fire doors make it easier to meet building requirements while still achieving your ideal interior.
Frequently Asked Questions
Yes. The 35mm fire doors in our range are FD30 rated, meaning they are tested to withstand fire for up to 30 minutes. This makes them suitable for use where fire resistance is required, even with slimmer existing door frames.
The primary difference is the thickness. Standard fire doors are typically 44mm thick, while 35mm versions are designed to fit older or narrower frames. Both can achieve the same FD30 fire rating, provided they're correctly installed and used with compatible hardware.
Absolutely. Every 35mm fire door in our collection is fully prefinished, either in real oak veneer or Prime+ white. No extra sanding, staining, or painting is required before installation.
Our 35mm internal fire doors are made using responsibly sourced materials and manufactured with sustainability in mind. From core construction to surface finish, we aim to balance safety, style, and environmental impact.
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Bring industrial-inspired design into your home with our collection of heritage steel-look doors. Available in bifold, French and internal door options, these on-trend designs offer the distinctive appearance of traditional steel doors with the practicality of modern materials. Browse our range today and transform your living space with striking heritage style doors.
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