Steel systems
We produce our steel joinery on Jansen systems, a Swiss manufacturer of steel profiles that has been on the market for over six decades.
Steel is the material that achieves the narrowest profile sightlines and the only one that is non-combustible. That is why we use it in two very different situations: in heritage buildings, where an existing geometry has to be reproduced exactly, and in compartmentation with fire resistance requirements, where the wall has to stay transparent.
Each system below has the detail section published by the manufacturer, the declared technical characteristics and a link to the official data sheet.
Categories
Four system families
Systems
Steel windows
Slim profiles, with or without a thermal break, from the heritage window to the system certified for passive houses.
Jansen Janisol — windowThe basic thermally broken system, in steel or stainless steel.Basic depth60 / 64 mmUw valuefrom 1.5 W/m²KAcousticup to Rw 45 dBBurglar resistanceup to RC3View details
Jansen Janisol HI — windowThe maximum insulation version: Uw from 0.69 W/m²K at the fixed light.Sash depth90 mmUw valuefrom 0.69 W/m²KAcousticup to Rw 46 dBBurglar resistanceRC1N – RC3View details
Jansen Janisol Primo — windowA basic depth of only 60 mm, thermally broken.Basic depth60 mmUw valuefrom 1.0 W/m²KAcousticup to Rw 45 dBBurglar resistanceup to RC3View details
Jansen Janisol Arte 2.0 — windowSightlines of 25 or 40 mm at the fixed light, on a depth of 60 mm.Construction depth60 mmSightlinefrom 20 mmAcousticup to 45 dBBurglar resistanceup to RC2View details
Jansen Janisol Arte 66 — windowTilt and turn with concealed hardware, on a 66 mm depth.Construction depth66 mmSightlinefrom 28 mmAcousticup to 47 dBLeaf weightup to 180 kgView details
Jansen-Economy 50 — windowA basic depth of 50 mm, without a thermal break.Basic depth50 / 58,5 mmInsulationnot thermally brokenBurglar resistanceup to RC3Bulletup to FB6View detailsSystems
Steel doors
Entrance doors for heavy traffic, doors with high thermal insulation and internal doors with a minimal profile.
Jansen Janisol — doorThe reference door for buildings with heavy public use, in steel or stainless steel.Basic depth60 mmTransmittance Udfrom 1.5 W/m²KAcousticup to Rw 45 dBBurglar resistanceup to RC3View details
Jansen Janisol HI — doorA Ud of 1.0 W/m²K with triple glazing, on a public-building door.Basic depth80 mmTransmittance Udfrom 1.0 W/m²KAcousticup to Rw 45 dBBurglar resistanceup to RC3View details
Jansen Janisol 70 — doorJanisol 60 profiles with Primo insulators, for triple glazing.Basic depth70 mmUf valuefrom 1.0 W/m²KAcousticup to Rw 46 dBMaximum sash3000 mmView details
Jansen Janisol Arte 2.0 — doorMinimum sightlines, in steel, stainless steel or Corten.Construction depth60 mmTransmittance Udfrom 1.9 W/m²KAcousticup to Rw 45 dBWind resistanceC5/B5View details
Jansen-Economy 60 — doorA greater depth and wall thickness, for heavy doors.Basic depth60 mmAcousticup to 44 dBBurglar resistanceup to RC3BulletFB4 – FB6View details
Jansen-Economy 50 — doorThe system for flush doors, without a thermal break.Basic depth50 mmAcousticup to Rw 45 dBWind resistanceup to C5Bulletup to FB6/NSView details
Jansen Art’15 — internal doorThe narrowest profile in the range, for internal doors and walls.Construction depth50 mmSightlinefrom 25 mmAcousticup to Rw 43 dBMaximum sash900 × 2400 mmView details
Jansen Janisol — finger-trap-protected doorRounded half-shells on the secondary closing edge.Finger-trap protectionDIN 18650Product standardEN 14351-1Compatibilitythe Janisol rangeOperationa closer or an automatic operatorView details
Jansen Janisol 2 — EI30 finger-trap-protected doorEI30 fire protection and finger-trap protection, in one element.Fire resistanceEI30Finger-trap protectionDIN 18650, EN 16005Single doorup to 1380 × 3000 mmDouble doorup to 3000 × 3000 mmView details
Jansen VISS — doors in the façadeDoors integrated into the façade, on standard VISS profiles.Uf valuefrom 2.0 W/m²KLeaf height2000 – 6000 mmLeaf weightup to 550 kgGlazing thickness17 – 52 mmView details
Jansen Janisol Arte 66 — lift-and-slide doorLeaves of up to 3,000 × 2,600 mm and 400 kg.Basic depth185 mmMaximum sash2600 × 3000 mmLeaf weightup to 400 kgAcousticup to Rw 40 dBView details
Jansen Janisol — folding partitionA steel folding wall, for interior or exterior use.Basic depth60 mmLeaves2 – 6Leaf weightup to 100 kgAcousticup to Rw 45 dBView detailsSystems
Fire and smoke protection
Doors, windows, walls and façades with fire resistance from E30 to EI90, plus smoke control doors.
Jansen Janisol C4 — EI60 / EI90 doorEI90 at an element thickness of only 70 mm.Fire resistanceEI60 and EI90Element thickness70 mmPartition wallup to EI120Door heightup to 2.50 mView details
Jansen Janisol 2 — EI30 combination, 70 mmEI30 doors that combine with EI60 or EI90 walls.Fire resistanceEI30 / EI60 / EI90Basic depth70 mmDoor heightup to 3.0 mEmergency exitEN 1125 / EN 179View details
Jansen-Economy 60 — E30 / EW30 / E60 / EW60 doorFire-resistant doors and fixed lights up to class E90.Fire resistanceE30 / EW30 / E60 / EW60Smoke controlDIN 18095Door heightup to 3.8 mDurabilityC5View details
Jansen-Economy 50 — fire-resistant doorE30 / EW30 / E60 / EW60, on the 50 mm profile.Fire resistanceE30 / EW30 / E60 / EW60Fixed lightup to E120Door heightup to 3.8 mSmoke controlDIN 18095View details
Jansen-Economy 50 RS — smoke control door and wallLarge, heavy smoke control doors, with a slim profile.Smoke controlDIN 18095TestEN 1634-3DurabilityC5Emergency exitEN 1125 / EN 179View details
Jansen Janisol 2 — EI30 fire-resistant sliding doorAn EI30 slider, with or without an emergency exit function.Fire resistanceEI30Single doorup to 1400 × 2500 mmDouble doorup to 2800 × 2500 mmUnit heightup to 4040 mmView detailsSystems
Glazed walls and façades
The VISS mullion-transom systems: a thermally insulated façade with a Passivhaus certificate, a version without a load-bearing structure, structural glazing and a fire-resistant façade.
Jansen VISS — façadeA highly insulated façade, with a Passivhaus certificate.Uf valuefrom 0.65 W/m²KSightline50 and 60 mmAcousticRw 47 dBBurglar resistanceRC2 – RC3View details
Jansen VISS Basic — façadeA façade with no load-bearing structure of its own, on standard profiles.Uf valuefrom 0.95 W/m²KSightlinefrom 50 mmInfill thickness6 – 70 mmBurglar resistanceRC2 – RC4View details
Jansen VISS SG — structural glazing façadeA fully glazed façade, with panels of up to 2.5 × 5.0 m.Uf valuefrom 0.84 W/m²KMaximum glazed panel2,5 × 5,0 mSightline50 and 60 mmBasic depth50 – 250 mmView details
Jansen VISS Fire — EI30, EI60 and EI90 façadeA compartmentation façade, in three fire resistance classes.Fire resistanceEI30, EI60 and EI90Sightline50 and 60 mmConstruction depth50 – 280 mmTransmittance Ucwfrom 0.96 W/m²KView details
Jansen VISS Fire — EI30 RC2/3 façadeEI30 compartmentation and RC2 or RC3 burglar resistance, in one system.Fire resistanceEI30Burglar resistanceRC2 and RC3Sightline50 and 60 mmUf valuefrom 1.3 W/m²KView detailsHardware and accessories
The hardware of the Jansen systems
The profile gives the geometry; the hardware decides how the element behaves in use.
Jansen
Handles
A single handle line, drawn for the slim steel profiles. The narrow rose is all that fits on a 25 mm sightline without spoiling the proportion.
- Stainless steel, extra-slim design
- Extra-narrow roses and a 90° lever
- 20,000 cycles for windows, 200,000 for doors
- Classic and modern versions, for windows and for doors
Jansen
Hinges
The hinge decides how much the leaf can weigh and how cleanly the edge of the door reads. Jansen publishes both versions, visible and concealed, on the same profiles.
- Steel and stainless steel, welded or screw-fixed
- A visible version and a concealed version
- Screw-fixed 3D hinges on Janisol Arte 2.0
- Up to 180 kg on the window and 550 kg on the VISS door
Jansen
Locks and lock cases
The number of locking points sets the burglar resistance class and the maximum leaf height. In fire protection, the lock is part of the certified assembly.
- Single-bolt locks and locks with a retractable top bolt
- Multipoint locks, optionally motorised
- Panic locks and panic bars, EN 1125 and EN 179
- Profile and round cylinders on VISS doors
Jansen
Operating accessories
The components that decide how the door behaves in use: how it closes by itself and in what order the two leaves open.
- Surface-mounted closers or closers integrated into the profile
- Closing sequence selector bars
- Electric operators for windows
- Automation for finger-trap-protected doors
Jansen
Finishing components
The bead that holds the glass and the gasket that seals it. On a profile with a 25 mm sightline, the design of the bead changes how the window reads.
- Designer glazing beads, in several materials
- An integrated gasket groove on Janisol Arte 2.0
- EPDM or CR sealing, with different reaction to fire
- Dry glazing or putty glazing
The exact codes are settled together with the system and the class required. In fire protection, the hardware is part of the certified assembly and cannot be changed freely. The Jansen documentation on hardware.
Colours and finishes
Materials and colours
With steel the choice starts from the material, not from the colour: only steel is coated; stainless steel and Corten keep their own appearance.
Coated steel
The standard version. The galvanised profile is powder coated or stove enamelled, to a code from the palette below or to any other RAL code ordered.
Stainless steel
Grades 1.4401 (AISI 316), 1.4404 and 1.4301 (AISI 304), bare or polished. It is not coated: the appearance comes from mechanical finishing — grinding, brushing, polishing.
Corten steel
Pre-rusted steel, with an industrial look, available on Janisol Arte 2.0 and Arte 66. It is not coated; the patina is the finish.
Colours for coated steel
Ten coded shades, eight RAL and two DB. Any other RAL code can be ordered; the palette above is the one the manufacturer publishes openly. What a monitor shows differs from a physical sample — the shade is confirmed on a sample, to the code ordered.
Surface treatments
Powder coating
The standard treatment for galvanised profiles. It covers the RAL palette, in different gloss levels.
Stove enamelling
The alternative to powder, for the same bare or galvanised steel profiles.
Galvanising
The basic corrosion protection. Most profiles are supplied strip-galvanised.
Wet painting
Where the geometry of the part will not take powder. In exposed areas, highly durable paints.
Mechanical finishing
Grinding, brushing, polishing. On stainless steel the final appearance comes from this, not from a coating.
The GSB seal
The profiles carry the GSB seal, recertified annually by independent institutes.
Continuous