Jansen steel doors

Jansen steel doors are steel framed glazed door systems with an LPS 1175 security rating. Slim steel profiles carry large glass areas, so entrances keep their daylight and visibility without dropping the rating. ArxBridge supplies and installs these systems across the UK. They form the glazed part of the security range.

• Steel framedGlazed security door systems
• SR2 to SR4LPS 1175 rating options
• Slim profilesGlass areas without losing rating
• Tested assembliesProfiles, glass and hardware as one

What these doors are

These are doors built from narrow steel profiles glazed with attack-rated glass, rather than from solid steel leaves. The result looks like an architectural glazed entrance and performs like a security doorset. The profiles, the glass, the beads and the hardware are tested together to LPS 1175, so the large glazed area is part of the rating, not an exception to it.

The system suits entrances where appearance matters: reception fronts, showroom entries and office lobbies that need a security rating without a fortress look. The LPS 1175 guide explains the rating scale behind the options below.

Glass is part of the rating. The attack-rated glazing and its retention system are tested with the profiles. Replacing the glass later with standard double glazing would remove the rating from the whole doorset.

Which rating do you need for jansen steel doors

The rating choice follows the same threat logic as any security door: SR2 for the opportunist, SR3 for the prepared attacker, SR4 for power tools and planned attack. The difference here is that the rating is achieved with slim profiles and glass, which takes more engineering than a solid leaf at the same level.

How the systems are built

Narrow steel profiles form the leaf and frame, with internal reinforcement at the lock and hinge positions. The glass is attack-rated to LPS 1270 and held by a tested bead and gasket system; at higher ratings the glass build-up is thicker and the bead deeper. Because the profiles are slim, every fixing and every joint is designed to deny the leverage that a narrow section might otherwise offer.

Hardware is specified with the system: multi-point locking on SR3 and above, high-security cylinders, and closers matched to the glazed leaf weight. Thresholds, side screens and transom panels can be built from the same profiles, so the whole entrance front carries one consistent rating rather than a rated door in an unrated screen.

Combining jansen steel doors with other ratings

Thermal performance is the natural partner: thermally broken steel profiles hold the security rating with a lower U-value for entrance fronts (see thermally broken doors). Fire ratings can be engineered into glazed steel doorsets where the entrance sits on a compartment line. For sites facing firearms, the same glazed approach scales to ballistic ratings (see bullet resistant windows).

As always, each combination is a separate tested assembly. State the security rating, the thermal target and any fire rating together at quote stage.

Where these doors are used

Retailers use glazed steel security doors on high-street frontages that must look open while resisting attack (see high-value retail). Public buildings, galleries and civic entrances use them where daylight and visibility matter (see public spaces). Offices and commercial lobbies choose them for a rated entrance that matches an architectural glazing scheme. The system fits any entrance that needs light, sightlines and a rating at once.

What sets the cost and lead time for jansen steel doors

The glass is the main cost driver: attack-rated glazing in large panes is a significant part of every doorset. The rating sets the profile reinforcement and the glass thickness, so SR4 costs more than SR2 at the same size. Entrance fronts with side screens and transoms add profile length and more glazed units.

Finish is prominent on a glazed door: powder coating colour and quality are visible, and marine-grade systems suit exposed sites. Hardware, access control integration and automatic operators each add supply and commissioning time. Site installation needs care with large glass units and precise frame alignment. No prices are published; the quote follows the drawings.

How to specify these doors

1. Name the rating. SR2 (B3), SR3 (C5) or SR4 (D10) to LPS 1175 for each doorset.
2. Define the entrance. Door leaves, side screens, transoms and overall frontage sizes.
3. Set the glass. Attack-rated glazing as part of the tested assembly, not a separate supply.
4. Choose hardware and finish. Locks, closers, access control and the powder coat colour.
5. Send the drawings. Elevations and opening sizes are enough for a firm quote.