bespoke sliding & bifolding steel doors
Transform your living spaces with beautifully crafted sliding and bifolding steel doors, combining architectural elegance with exceptional functionality.
At Mammoth Steel, we offer premium steel-framed glass door systems designed to maximise natural light, create flexible living spaces and complement both contemporary and traditional interiors.
As an authorised dealer for specialist European manufacturer Portamet, we bring together precision engineering, quality craftsmanship and sophisticated design.
Whether you’re looking for elegant sliding doors to divide an open-plan living area or a striking bifolding system to connect adjoining spaces, we’ll help you explore a solution tailored to your project.
Based in Cheshire and serving customers throughout the UK, Mammoth Steel welcomes enquiries from homeowners, architects, interior designers and developers.
Our sliding & bifolding door design
Beautifully engineered to create flexible, light-filled spaces, our bespoke steel door systems combine elegant design with practical functionality.
Explore our collection of sliding, bifolding and pocket steel doors, tailored to complement both contemporary and traditional interiors.
bifolding steel doors
Create a seamless connection between spaces with beautifully crafted bifolding steel doors. Featuring slim steel frames and expansive glazing, our bespoke bifolding systems fold neatly to one side, opening up living areas and creating an impressive architectural feature. Available in a range of configurations, glazing options and finishes, these doors offer an elegant solution for both internal spaces and suitable external applications.
double & french steel doors
Create a striking architectural feature with beautifully engineered double steel doors. Combining slim steel frames with generous glazing, these doors offer a timeless design that connects living spaces while maintaining a sense of definition and elegance.Ideal for larger openings, contemporary renovations and traditional properties alike.
Arched steel doors
Combining classical elegance with modern steel craftsmanship, our bespoke arched doors create a distinctive architectural statement. From graceful single arches to dramatic double-door designs, each door can be tailored to complement your property’s individual character. Perfect for period renovations, luxury interiors and statement entrances.
From concept to completion
Every stunning steel door begins with an idea. At Mammoth Steel, we work with you to turn that idea into a carefully specified, beautifully crafted product.
step 1. the design & planning
Tell us about your project, your preferred style and the dimensions of your opening. Whether you have detailed architectural drawings or are simply exploring design possibilities, we’ll help you consider suitable configurations, glazing, finishes and hardware.
step 2. precision fabrication
Once your design and specifications are agreed, your doors are manufactured by our specialist European partner, Portamet. Combining precision engineering with skilled craftsmanship, each bespoke door is produced to the approved requirements.
step 3. expert installation
Once manufacturing is complete, we’ll coordinate the next steps for delivery and install your project. Our aim is to make the process straightforward, from your initial enquiry through to the finished result.
Frequently asked questions
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Yes. We offer bespoke steel doors manufactured to suit individual project requirements. Dimensions, configurations and design details can be discussed during your initial enquiry.
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Single steel doors provide an elegant solution for standard openings, while double or French-style steel doors are particularly suited to wider openings and spaces where you want to create an architectural feature and bring light into a room.
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Yes. Depending on the chosen door system, options may include clear, frosted or textured glazing, together with a selection of frame colours, finishes and handles.
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Yes. Our collection includes bespoke arched steel doors, available in single and double configurations. These can be designed to complement both traditional and contemporary properties.
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Mammoth Steel is based in Cheshire and welcomes enquiries from homeowners, architects, builders and commercial clients throughout the UK. Delivery and installation arrangements can be discussed for each project.
let’s create something exceptional
Considering steel doors for your home or commercial project?
Whether you’re renovating a period property, creating a contemporary living space or designing a new development, we’d love to hear about your project.
Explore our collection of bespoke single, double and arched steel doors, and let Mammoth Steel help you find the perfect design for your project.
Expertly designed. Precision fabricated. Built to last.