The Artesa
Contemporary homes · Heritage renovations · Luxury new-builds · Commercial buildings · High-specification architectural projects
Key details
- Thermally broken steel · U-values down to 1.2 W/m²K
- Acoustic insulation up to 45dB
- PAS 24 certified security · CE certified EN 14351-1
- ZF100 corrosion-resistant coating
- Compatible with double and triple IGUs
- Glass options include clear, frosted, fluted and solar-control
- Multi-point locking system
- Maximum sash 1000mm × 2500mm
- Nearly 100% recycled steel content
- Any RAL colour · bespoke finish options
Available as
Windows · Single doors · Double doors · Side screens · Top screens · Fixed walls
Performance and appearance, finally in the same sentence
There are thermally broken steel systems that perform well. There are those that look good. The Artesa was built to do both, without the usual trade-offs between them.
CE certified to EN 14351-1 and PAS 24 security certified, it brings a level of independent verification that architects and developers increasingly require — particularly on projects where compliance documentation needs to be watertight alongside the installation itself. Acoustic insulation up to 45dB and U-values down to 1.2 W/m²K handle the thermal and acoustic demands of both urban and rural settings. The ZF100 corrosion-resistant coating ensures it performs in exposed locations over a building’s lifetime without deterioration.
Ultra-slim sightlines keep the frame where it belongs: supporting the glass, not competing with it. Compatible with double and triple glazing, available in clear, frosted, fluted and solar-control options, and finished in any RAL colour with maximum sash dimensions of 1000mm × 2500mm.
Every system manufactured to order, bespoke to your project.
Internal door collections
Three families.
Every door type.
Internal – original profile
Internal steel doors & partitions
Twenty millimetres of steel frame. Everything else is glass, light and space. The Foundry is our original slim internal profile — hand-welded, precisely crafted, and designed to let a room breathe.
Internal – ultra-slim
Internal steel doors & partitions
Ultra-slim sightlines from 13mm. A profile inspired by Art Deco precision and classic industrial glazing — made for interiors where the frame should almost disappear.
Internal – maximum light
Internal steel doors & screens
The look of premium fire-rated steel glazing — without the fire-rated price. The Lumière delivers the same refined heritage appearance as the Lumière Sentinel E30, at approximately 35% less. For projects where consistency matters as much as budget.
Internal – maximum light
Internal steel doors, partitions & shower enclosures
The character of 1920s steel glazing, faithfully recreated for interiors. Designed to match the Heritage W40 external system — for projects where authenticity matters as much as architecture.
Internal – maximum light
Internal steel doors & partitions · New
A premium slim steel profile designed to move seamlessly from outside to in. The internal counterpart to the Signature External — same sightlines, same character, complete architectural continuity.
Describe your space. We'll take it from there.
Get your quote — no pressure, just expert advice.
EXTERNAL DOORS & WINDOWS
The Threshold collection.
Outside, redefined.
External
Ottostumm · External steel windows & doors
Hot-rolled steel with the strength and character that cold-formed profiles can’t replicate. The Heritage is built for the projects where authentic industrial architecture isn’t an aesthetic choice — it’s the only acceptable answer.
External
Thermally enhanced steel entrance doors
The same refined proportions as the Signature Internal — engineered for the outside. Thermally enhanced, weather-tested and designed to perform as well as it looks at the entrance to a building.
External
Thermally broken external steel windows & doors
The look of premium fire-rated steel glazing — without the fire-rated price. The Lumière delivers the same refined heritage appearance as the Lumière Sentinel E30, at approximately 35% less. For projects where consistency matters as much as budget.
External
TB PRO · Thermally broken steel doors & windows · external
Thermally broken steel at a more accessible price point. The Forge Pro brings reliable insulation, smooth operation and the quiet integrity of steel to projects where performance matters but budget is part of the conversation.
External
Thermally broken external steel windows & doors
PAS 24 certified security. Acoustic performance to 45dB. U-values to 1.2 W/m²K. Ultra-slim sightlines. The Artesa is the system for projects where every performance metric matters — and so does how it looks.
Come in with a floor plan, a question, or just a feeling. We'll start from there.
1 Courtenay Road
East Lane Business Park
Wembley
LONDON
HA9 7ND
FIRE-RATED RESIDENTIAL
The Sentinel range
Protected without compromise
Fire-rated
E30 fire-rated steel doors · Internal & external
Certified fire protection without the compromise. The Sentinel delivers E30 to E120 fire resistance, acoustic performance up to 44dB and genuine steel durability — for residential and commercial projects where performance is the brief.
Fire-rated
E30 · Internal fire-rated steel doors & screens · New
E30 certified. Heritage proportions. Designed to be indistinguishable from its non-fire-rated twin. The Lumière Sentinel exists so that fire protection never has to look like fire protection.
Fire-rated
E30 · Internal fire-rated steel doors & screens
Slim, decorative and E30 certified. The Primo brings heritage glazing bar character to fire-rated steel — for interiors where protection is required but the door still has to earn its place in the room.
Fire-rated
EI30 · Internal fire-rated steel doors · New
EI30 certified — fire integrity and thermal insulation combined. The Resilience meets current UK Building Regulations for fire protection, without compromising the architectural quality of the door itself.
