01VIEW THE FAMILY ↘
uPVC windows
70 AD · 76 AD · 76 MD · 88 MDFour main options, from the economical 70 mm system to the premium 88 mm platform.
KÖMMERLING UPVC RANGE
LUMORA uPVC collection Quiet.
Light.
Comfort.
Precisely engineered Kömmerling systems for quiet, bright rooms where energy use stays under control.
TECHNICAL CROSS-SECTIONKÖMMERLING UPVC
01 · RANGE STRUCTUREPurpose first.
Purpose first.
Then the family.
The Kömmerling range is not simply a ladder of profile depths. Windows, HST lift-and-slide doors, sliding systems and front doors each work differently, so they should not be seen as interchangeable variants of the same profile.
02VIEW THE FAMILY ↘
Lift-and-slide doors
PremiDoor 76 · PremiDoor 88HST systems for large glazed openings, kept separate from conventional sliding systems.
03VIEW THE FAMILY ↘
Sliding systems
PremiSlide 76 · PremiLine 80Sliding windows and doors, each with its own operating principle, geometry and applications.
04VIEW THE FAMILY ↘
uPVC front doors
Kömmerling 76 · Kömmerling 88Door types, opening directions and AluClip versions, in a product group of their own.
02 · UPVC WINDOWSFour systems.
Four systems.
Four clear reasons.
The depth in millimetres is only the start. The cards set out the sealing, the chambers, the maximum glass thickness and why a particular system is the right choice for a project.
01Official cross-section
Economical uPVC system2 sealing levels
Kömmerling 70 AD
A clear entry point to the Kömmerling range
- Depth
- 70 mm
- Chambers
- 5
- Glazing
- 10–44 mm
- Profile Uf
- down to 1.2 W/m²K
Why this system
Official technical sourceChoose Kömmerling 70 AD when the project needs a proven uPVC window with a shallower system depth for standard residential openings on a sensible budget, without moving up to a deeper platform unnecessarily.
- Renovation
- Standard residential openings
- Cost-conscious projects
02Official cross-section
Versatile uPVC system2 sealing levels
Kömmerling 76 AD
The widest range of practical uses
- Depth
- 76 mm
- Chambers
- 5
- Glazing
- up to 48 mm
- Profile Uf
- down to 1.1 W/m²K
Why this system
Official technical sourceChoose Kömmerling 76 AD when you want a contemporary 76 mm platform, a wide choice of glass and a good balance of thermal performance, design options and cost for new build or renovation.
- New build and renovation
- Triple glazing
- A wide range of openings
03Official cross-section
Enhanced comfort system3 sealing levels
Kömmerling 76 MD
When the sealing detail comes first
- Depth
- 76 mm
- Chambers
- 6
- Glazing
- up to 48 mm
- Profile Uf
- down to 1.1 W/m²K
Why this system
Official technical sourceChoose Kömmerling 76 MD when you want to keep the economical 76 mm depth but add a centre seal and three sealing levels, for a tighter building envelope and more comfortable rooms.
- More demanding new build
- Three sealing levels
- Comfort and protection
04Official cross-section
Premium insulated uPVC system3 sealing levels
Kömmerling 88 MD
For the most demanding building envelope
- Depth
- 88 mm
- Chambers
- 7
- Glazing
- up to 56 mm
- Profile Uf
- down to 0.95 W/m²K
Why this system
Official technical sourceChoose Kömmerling 88 MD when high thermal insulation, thick performance glass, stability and the project’s long-term energy target matter more than the lowest upfront cost.
- Low-energy buildings
- Glazing up to 56 mm
- Premium specifications
Important note: the Uf values shown apply to the profile in the version declared by the manufacturer. The Uw of the complete window is confirmed only once the size, glass, spacer, reinforcement and opening configuration are known.
Kömmerling 76 first branches into AD and MD.
AluClip, AddOn and the ventilation options are not separate system depths. They are versions of the same 76 mm base platform, some with extra features.
BASE PLATFORMKömmerling 7676 mm
76 AD
Two sealing levelsA versatile platform for a wide range of contemporary uPVC windows.
76 MD
Three sealing levelsA centre seal for a tighter joint between frame and sash.
StandardAluClipAluClip ProAluClip ZeroAddOnVentilation solutions
04 · LIFT-AND-SLIDE DOORS
PremiDoor – two HST levels for large openings.
PremiDoor 76 and PremiDoor 88 are not wide windows but true lift-and-slide systems. The sash is first lifted off its seals, then slides parallel to the fixed panel. That is why they have their own threshold, hardware and junction geometry.
01Official HST cross-section
Economical HST systemHST · lift-and-slide
Kömmerling PremiDoor 76
A large opening, with the system depth kept in check
- Profile depth
- 76 mm
- Construction depth
- 179 mm
- Glazing
- up to 50 mm
- Maximum size
- up to 6.50 × 2.60 m
- Profile Uf
- average 1.4 W/m²K
Available system variants
StandardAluClipLuxLux AluClip
Why this system
Official technical sourceChoose PremiDoor 76 when the project calls for a true lift-and-slide door, a large glass area and step-free access, but with a more economical construction depth that also suits renovation.
- New build and renovation
- Large terrace openings
- Step-free threshold
02Official HST cross-section
Premium insulated HST systemHST · lift-and-slide
Kömmerling PremiDoor 88
For the tallest, most thermally demanding HST doors
- Profile depth
- 88 mm
- Construction depth
- 207 mm
- Glazing
- up to 56 mm
- Maximum size
- up to 6.50 × 2.90 m
- Profile Uf
- average 1.2–1.3 W/m²K
Available system variants
StandardAluClipLuxLux AluClip
Why this system
Official technical sourceChoose PremiDoor 88 when maximum door height, thicker performance glass, three sealing levels and a long-term energy target matter more than the lowest upfront cost.
- Premium new build
- Taller HST doors
- Demanding building envelopes
PREMIDOOR FAMILY
PremiDoor 76 / 88
Standard · AluClip · Lux · Lux AluClip
Standard profile geometry
The technical values shown apply to the basic HST version. Sizes, glazing and thermal values of the Lux and AluClip variants are confirmed separately.
More glass in the fixed panel
In the fixed glazing the conventional sash profile is left out, so the sightline is slimmer and more daylight comes in.
External aluminium cladding
It does not change the basic lift-and-slide principle; it adds an aluminium outer surface and a wider choice of finish colours.
HOW TO CHOOSE
Choose the 76 or 88 system first. Then choose Standard or Lux geometry. AluClip is an outer finishing layer and can be combined with either geometry.
05 · SLIDING SYSTEMSTwo ways of sliding.
Two ways of sliding.
Two different purposes.
PremiSlide 76 and PremiLine 80 save space because the sash does not open into the room, but they do not work in the same way. The first uses special ECO SLIDE hardware and all-round sealing; the second is an economical parallel system on tracks.
01Official sliding cross-section
Sealed sliding system for everyday comfortSpace-saving opening
Kömmerling PremiSlide 76
When you want a sash that slides instead of swinging into the room
How it works: ECO SLIDE hardware moves the sash sideways off its seals and guides it into a sealed closed position.
- Base profile
- 76 mm
- Chambers
- 5
- Glazing
- up to 50 mm
- Profile Uf
- down to 1.4 W/m²K
- Hardware
- SIEGENIA ECO SLIDE
System variants and panel layouts
StandardAluClip
Why this system
Official technical sourceChoose PremiSlide 76 when a window or a lighter sliding door has to save space inside but keep all-round EPDM sealing, the option of triple glazing and controlled ventilation in a secure position.
- Sliding windows
- Lighter sliding doors
- Residential and commercial spaces
02Official sliding cross-section
Economical parallel sliding systemSpace-saving opening
Kömmerling PremiLine 80
For a simple, quiet, space-saving unit
How it works: the sashes run in parallel along steel tracks on uPVC rollers.
- Frame depth
- 80 mm
- Sash depth
- 54 mm
- Chambers
- 3
- Glazing
- up to 32 mm
- Running gear
- steel track + uPVC rollers
System variants and panel layouts
2-panel3-panel4-panel2 or 3 tracks
Why this system
Official technical sourceChoose PremiLine 80 when the priorities are simple parallel sliding, quiet operation, a wider choice of panel layouts and an economical sliding window or door without a special press or lift mechanism.
- Sliding windows and doors
- Two or three tracks
- Two-, three- and four-panel layouts
SLIDING SYSTEMS · WITHOUT LIFTING THE SASH
PremiSlide 76 / PremiLine 80
The choice depends on the mechanism, the sealing, the glass and the planned panel layout.
Sealed sliding system for everyday comfort
ECO SLIDE hardware guides the sash sideways and presses it into the closed position. It is designed for openings where you want to save space and still need tighter sealing, triple glazing and a ventilation position.
Simple parallel sliding
The sashes slide along tracks without being lifted. It is an economical, quiet system that suits a wide range of sash layouts, but it does not match the performance of PremiSlide or HST.
PremiDoor remains a separate family
When the project needs a large lift-and-slide door, a heavy sash that lifts before it slides and a threshold designed for HST, PremiDoor 76 or PremiDoor 88 is the better choice.
HOW TO CHOOSE
First we settle the operating principle and the size of the opening. Only then do we choose the system, panel layout, glass and finish. The profile name is not where the decision starts.
06 · UPVC FRONT DOORSTwo depths.
Two depths.
Direction and finish come later.
Kömmerling 76 and 88 are the base door platforms. Opening inwards or outwards is a functional choice, while Standard, AluClip, AluClip Plus and AluClip Zero describe the finish or a special architectural version – not a separate system depth.
01Official front door cross-section
Versatile uPVC door platformuPVC front doors
Kömmerling 76 front door
A sensible balance of insulation, options and cost
- System depth
- 76 mm
- Chambers
- 5
- Infill or glass
- up to 50 mm
- Security target
- up to RC2
- Standard single leaf
- up to 1,200 × 2,400 mm
- Threshold
- thermally broken
Opening directions and system variants
Inward openingOutward openingAluClipAluClip PlusAluClip Zero
Why this system
Official technical sourceChoose Kömmerling 76 when the entrance needs a proven door construction, a thermally broken threshold, infill panels or glass up to 50 mm and a wide choice of standard and aluminium-clad versions, without moving up to the deeper 88 mm platform.
- Family homes
- Renovation and new build
- Standard and AluClip versions
02Official front door cross-section
Premium insulated uPVC door platformuPVC front doors
Kömmerling 88 front door
For a more demanding entrance, thicker infill and a premium building envelope
- System depth
- 88 mm
- Chambers
- 6
- Infill or glass
- up to 58 mm
- Security target
- up to RC2
- Standard single leaf
- up to 1,200 × 2,400 mm
- Threshold seal
- double
Opening directions and system variants
Inward openingOutward openingAluClipAluClip Plus
Why this system
Official technical sourceChoose Kömmerling 88 when the building has a demanding energy target and the front door needs a deeper six-chamber platform with an 88 mm system depth. It is the right choice for projects where long-term thermal and structural headroom matters more than the lowest upfront cost.
- Premium new build
- Low-energy buildings
- More demanding entrance designs
Important technical limit: the figures in the tables refer to the standard uPVC versions. Sizes and infill panels of the AluClip variants are checked separately. RC2 is a security class the system can achieve, and Ud applies to the complete door. Both values are confirmed only for the actual size, reinforcement, threshold, lock, hardware and the chosen infill or glass.
UPVC FRONT DOOR FAMILY
Kömmerling 76 / 88
The depth and the performance level the project needs come first. Only then do we choose the opening direction, threshold, infill and external finish.
Inward or outward is not a matter of looks
The right opening direction depends on the space, the approach to the door, any canopy, means of escape and the door’s role in the building. Inward- and outward-opening doors each have their own system geometry, so the direction must be specified before we prepare the quote.
uPVC core or external aluminium cladding
AluClip and AluClip Plus keep the uPVC base and add an aluminium surface on the outside, with a wider choice of finishes. The cladding changes the exterior, not the system depth.
Flush architectural version
AluClip Zero is a special variant of Kömmerling 76 for a cleaner, flush exterior and thicker door infill panels. It is shown as a branch of the 76 family, not as a separate base profile.
The complete door sets the final value
The profile is only the core. The threshold, reinforcement, lock, hardware, type of infill or glass and the actual size together determine the security, weathertightness and Ud of the complete door.
HOW TO CHOOSE
88 is not simply a better 76. Kömmerling 76 is the more economical all-round base; 88 comes in when the project justifies a deeper platform and more thermal headroom. Opening direction and AluClip versions are chosen within the selected family.
What buyers need to understand before getting a quote
01What is the difference between Kömmerling 76 AD and 76 MD?+
Both systems have a system depth of 76 mm. AD has two sealing levels, while MD adds a centre seal, giving three sealing levels in all. The right choice depends less on the name than on the window as a whole, the glass and the project requirements.
02Is a deeper uPVC profile always better?+
Not necessarily. A deeper profile leaves more room for chambers, reinforcement and thicker glazing, but the sensible choice for each opening depends on its size, the building’s location, the energy target, the hardware, the glass and the budget.
03Is the Uf value the same as the window’s Uw value?+
No. Uf describes the thermal transmittance of the profile, Ug that of the glass and Uw that of the complete window in a given size and configuration. That is why a Uw value should not be quoted unless the exact window has been specified.
04Can uPVC windows have external aluminium cladding?+
Yes, with compatible AluClip versions. They keep the uPVC core on the inside, while the external aluminium cladding widens the choice of finish colours and changes the look of the facade.
05What is the difference between PremiDoor 76 and PremiDoor 88?+
PremiDoor 76 is the more economical HST platform, with a shallower system depth, and it also suits renovation projects. PremiDoor 88 is the deeper premium system for taller doors, thicker glass and a more demanding energy target.
06What does Lux mean on PremiDoor systems?+
Lux is the version with a slimmer sightline in the fixed glazing. It is not a different way of opening: the moving sash still works on the lift-and-slide (HST) principle, while the fixed panel gets a larger area of glass.
07What is the difference between PremiSlide 76 and PremiLine 80?+
PremiSlide 76 uses ECO SLIDE hardware, which guides the sash into a sealed closed position and takes glazing up to 50 mm thick. PremiLine 80 is an economical parallel sliding system on tracks, with a wider choice of two-, three- and four-panel layouts.
08Are PremiSlide and PremiLine the same as HST?+
No. On an HST system the handle first lifts the heavy sash off its seals, and only then does it slide. PremiSlide uses its own ECO SLIDE slide-and-press principle, while PremiLine sashes slide in parallel on tracks.
09What is the difference between Kömmerling 76 and 88 front doors?+
Kömmerling 76 is a versatile five-chamber door platform for a wide range of homes, while Kömmerling 88 is a deeper six-chamber platform for a more demanding energy target and thicker infill panels. The final choice is confirmed against the size, infill panels, threshold, hardware and opening type.
10Are AluClip and AluClip Zero new uPVC profiles?+
No, they are not new base profiles and do not add a new system depth. AluClip adds external aluminium cladding to a compatible uPVC door platform, while AluClip Zero is a special flush architectural version within the Kömmerling 76 family.
LUMORA · BESPOKE UPVC WINDOWS AND DOORS
We choose the profile only once we know the opening.
Send the sizes, panel layouts, opening type and your glass requirements. LUMORA brings the right system, reinforcement, hardware, threshold and installation together in one specification you can check.
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