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A person opens a glass door in a spacious, sunlit room with brick walls, large windows, and modern furnishings.
Prices from £1,200

Ottostum Steel Windows and Doors

High-end architectural solutions offering exceptional design and performance.

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Acoustic Insulation38 dB with standard glass configuration
Material CompositionGalvanized Steel, Stainless Steel, Cor-Ten Steel
Water Tightness9A Class - 600 Pa EN 12208
Heat Transfer CoefficientUw = 1.92 W/m2K EN ISO 10077-1
Secured By Design
ISO 9001 Certified
FENSA Registered
Constructionline Gold

Ottostum Steel Windows and Doors Features

Start with the published benefits that most affect performance, appearance and day-to-day use.

Innovative Design and Superior Performance

Experience superior aesthetics with Ottostum’s customizable steel windows and doors. Featuring advanced thermal insulation, exceptional durability, and timeless design, Ottostum solutions suit any architectural requirement.

Modern two-storey house with large glass windows, flat roof, and exterior lights on at dusk, surrounded by a grassy garden and minimal landscaping.

Architectural Bronze

A noble metal offering unique oxidation tones, patinable for tailored design aesthetics.

Thermal Break Technology

Polyamide insulation ensures high thermal performance even in extreme climates.

Variety of Finishes

Wide range of glazing beads and a plethora of RAL colors for a tailored finish.

Large Openings

Profiles designed to accommodate large insulating glass panes, supporting up to 400 kg.

Weather Resistance

Profiles are designed to withstand various weather conditions, ensuring durability and longevity.

Custom Solutions

We offer custom-designed profiles to meet specific architectural requirements.

Sustainable Materials

Use of eco-friendly and recyclable materials in manufacturing processes.

Cross-section of a black-framed double-glazed window showing two glass panes with an air gap and the window’s structural components.

Distinctive Materials

Ottostum utilizes materials like Cor-Ten, Stainless Steel, and Galvanized Steel, each offering unique oxidation qualities and finishes, ensuring that your windows and doors are not only functional but also aesthetically pleasing.

  • Cor-Ten steel for unique scenic effect
  • Stainless steel for superior durability
  • Color coated options for customization

Precision Engineering

Leveraging high modulus elasticity with slim profiles, Ottostum products ensure maximum opening size without compromising on stability or aesthetic elegance.
  • High modulus of elasticity, triple that of aluminium
  • Continuously laser welded profiles for high performance
  • Integrated thermal barrier for improved insulation
A cross-sectional view of a modern double-glazed window with an aluminium frame, showing the layers of glass and insulation components.
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Product Specifications

Move between the practical benefits, verified performance data, product videos and downloadable technical literature.

Features & benefits

What this system is designed to do

Use these practical characteristics to judge whether the product suits the opening, architecture and way the space will be used.

Profile Thickness1.5 mm cold formed steel
Max Glass Thickness56 mm
Thermal Break InsulationPA 6.6 polyamide
Galvanized Steel OptionsAvailable in multiple finishes
Custom Color OptionsCan be customized in any RAL color

Gallery

Browse installations, product details, and finish inspiration from recent projects.

A large pivot glass door opens to a modern interior with blue armchairs, a red lamp, bookshelves, and an exterior view of greenery and buildings.
Interior room with stone archway, large arched glass doors open to a courtyard, and a mirror reflecting part of the space. Neutral tones and minimal furniture.
A person opens a glass door in a spacious, sunlit room with brick walls, large windows, and modern furnishings.
A sunlit orange velvet banquette seat next to a window with a gold frame, with a brick wall visible outside.
Modern two-storey house with large glass windows, flat roof, and exterior lights on at dusk, surrounded by a grassy garden and minimal landscaping.
Modern house exterior with large floor-to-ceiling windows, a grey facade, outdoor dining table with potted plants, and garden area in the foreground.
Cross-section of a double-glazed window with a metal frame, showing two panes of glass separated by an air gap.
Cross-sectional view of a window frame showing four layers of glass separated by spacers, enclosed in a bronze or brass-coloured metal frame.
A cross-section of a black-framed double-glazed window, showing the glass layers, frame structure, and insulating spacer.
Cross-section of a black-framed double-glazed window showing two glass panes with an air gap and the window’s structural components.
Cross-section of a black-framed double-glazed window, showing the glass panes and frame structure against a plain white background.
A cross-sectional view of a modern double-glazed window with an aluminium frame, showing the layers of glass and insulation components.
A large pivot glass door opens to a modern interior with blue armchairs, a red lamp, bookshelves, and an exterior view of greenery and buildings.
Interior room with stone archway, large arched glass doors open to a courtyard, and a mirror reflecting part of the space. Neutral tones and minimal furniture.
A person opens a glass door in a spacious, sunlit room with brick walls, large windows, and modern furnishings.
A sunlit orange velvet banquette seat next to a window with a gold frame, with a brick wall visible outside.
Modern two-storey house with large glass windows, flat roof, and exterior lights on at dusk, surrounded by a grassy garden and minimal landscaping.
Modern house exterior with large floor-to-ceiling windows, a grey facade, outdoor dining table with potted plants, and garden area in the foreground.
Cross-section of a double-glazed window with a metal frame, showing two panes of glass separated by an air gap.
Cross-sectional view of a window frame showing four layers of glass separated by spacers, enclosed in a bronze or brass-coloured metal frame.
A cross-section of a black-framed double-glazed window, showing the glass layers, frame structure, and insulating spacer.
Cross-section of a black-framed double-glazed window showing two glass panes with an air gap and the window’s structural components.
Cross-section of a black-framed double-glazed window, showing the glass panes and frame structure against a plain white background.
A cross-sectional view of a modern double-glazed window with an aluminium frame, showing the layers of glass and insulation components.
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MaterialGlass & Steel
Product typeDoors / Windows
SystemOttostum
Acoustic Insulation38 dB with standard glass configuration
Material CompositionGalvanized Steel, Stainless Steel, Cor-Ten Steel
Water Tightness9A Class - 600 Pa EN 12208
A large pivot glass door opens to a modern interior with blue armchairs, a red lamp, bookshelves, and an exterior view of greenery and buildings.
Product mediaOttostum Steel windows and doors
Published strengths

What stands out on this system

  • More natural lightGlazing, sightline or large-opening details support brighter spaces.
  • Thermal comfortPublished content includes thermal, insulation or draught-control benefits.
  • Quieter roomsAcoustic or sound-reduction performance is discussed for this product.
Key documents
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