Sliding and folding windows

Sliding and folding windows — the ideal solution for panoramic glazing and space saving. Sashes move along the frame without taking up space when opened.

Get consultation
Sliding and folding windows

REHAU Sliding Systems

UW- value 1.5
Rehau High-Design Slide parallel-sliding PVC system

Rehau High-Design Slide

A graceful sliding system for balconies, loggias and terraces. Its compact PVC profiles glide smoothly and run warmer than aluminium.
Energy rating
B
System type
Sliding
Track options
2/3/4 tracks
Sealing
Brush seals
Glass unit
up to 24mm
Surface
HDF finish
Thermal protection
Uw ≤ 1.5 W/(m²·K)
UW- value 1.0
Rehau Synego Slide sealed press-to-close sliding system

Rehau Synego Slide

An airtight sliding system with a press-to-close action. Quiet and effortless in a single movement.
Energy rating
A+
System type
Sealed sliding
Profile depth
80mm
Profile chambers
7 chambers
Glass unit
up to 51mm
Max panel weight
200kg
Thermal protection
Uw ≤ 1.0 W/(m²·K)
UW- value 1.3
Rehau Panorama Swing slide-and-turn glazing system

Rehau Panorama Swing

A one-of-a-kind system whose panels both slide and pivot, opening the aperture completely.
Energy rating
A
System type
Slide-and-turn
Panel movement
Independent
Opening
Up to 100%
Panels
3-7 panels
Glass unit
up to 40mm
Thermal protection
Uw ≤ 1.3 W/(m²·K)
UW- value 0.80
Rehau Geneo HST lift-and-slide portal made from RAU-FIPRO fiberglass

Rehau Geneo HST

A premium lift-and-slide portal built from RAU-FIPRO fibreglass for huge openings up to 13m². Passivhaus certified with outstanding thermal insulation.
Energy rating
A++
System type
Lift & Slide HST
Profile depth
86mm
Material
RAU-FIPRO X
Glass unit
up to 53mm
Max panel weight
400kg
Thermal protection
Uw ≤ 0.80 W/(m²·K)

VEKA Sliding Systems

UW- value 0.83
Veka Vekamove 76 airtight sliding patio system

Veka Vekamove 76

A forward-thinking sliding system. It marries the air-tightness of a conventional window with the ease of use and wide panoramic view of sliding doors.
Energy Efficiency
A
System Type
VekaMove (Smart)
Material
PVC Class A
Frame Depth
150 mm
Max. Glazing
up to 48 mm
Thermal Protection (Uw)
≤ 0.83 W/(m²·K)
Sound Insulation
≈ 43 dB
UW- value 0.78
Veka Vekamotion 82 lift-and-slide panoramic portal door

Veka Vekamotion 82

The flagship HS system. A lift-and-slide portal for limitless panoramic glazing, delivering maximum daylight and a barrier-free setting.
Energy Efficiency
A++
System Type
HS-Portal (Lift)
Material
PVC Class A
Frame Depth
194 mm
Max. Glazing
up to 54 mm
Thermal Protection (Uw)
≤ 0.78 W/(m²·K)
Sound Insulation
≈ 44 dB
UW- value 0.73
Veka Vekamotion 82 MAX frameless-look sliding portal with concealed frame

Veka Vekamotion 82 MAX

The designer edition of the flagship portal. A concealed frame, the largest possible glass surface, and a sense of unbounded space.
Energy Efficiency
A++ (Max)
System Type
HS-Portal MAX
Material
PVC Class A
Frame Depth
194 mm
Max. Glazing
up to 54 mm
Thermal Protection (Uw)
≤ 0.73 W/(m²·K)
Sound Insulation
≈ 45 dB

WDS Sliding Systems

UW- value 1.6
WDS SL 60 sliding PVC window system as the main image

WDS SL60

Save space. A sliding PVC system that runs warmer and quieter than dated aluminum.
Energy rating
B
System type
Classic (Sliding)
Profile depth
60 mm
Chambers
3 chambers
Glass unit
up to 18 mm
Thermal protection
Uw ≤ 1.6 W/(m²·K)
Sound insulation
≈30 dB
UW- value 1.3
WDS SL 76 airtight Smart Slide sliding door as the main image

WDS SL76

A slider-casement hybrid. 100% airtightness from clever sash pressing all the way around the perimeter.
Energy rating
A
System type
Airtight (Smart)
Profile depth
76 mm
Chambers
5 chambers
Glass unit
up to 48 mm
Thermal protection
Uw ≤ 1.3 W/(m²·K)
Sound insulation
≈45 dB

Kömmerling Sliding Systems

UW- value ≤ 1.3
Main product image of the Kömmerling PremiLine PVC sliding window system

Kömmerling PremiLine

A classic sliding system that has become the benchmark for Spanish apartments. A perfect answer for glazing balcony and loggia exits, where saving space and having a reliable mechanism for everyday use are what count.
Energy efficiency
B
Material
PVC (Greenline)
Profile depth
80 mm (frame)
Insulation
3 chambers / 2 seals
Glazing unit
up to 28 mm
Thermal protection (Uw)
≤ 1.4 W/(m²·K)
Sound insulation
≈ 34 Rw(dB)
UW- value ≤ 0.95
Headline product image of the Kömmerling PremiSlide 76 sealed sliding window system

Kömmerling PremiSlide 76

A new-generation sealed sliding system that marries the convenience of a slider with the tight closure of a hinged window. Perfect for panoramic terraces that demand quiet and protection against severe weather.
Energy efficiency
A+
Material
PVC (Xtrem)
Profile depth
76 mm (frame 158 mm)
Insulation
5 chambers / 3 seals
Glazing unit
up to 50 mm
Thermal protection (Uw)
≤ 1.1 W/(m²·K)
Sound insulation
≈ 45 Rw(dB)
UW- value ≤ 0.9
Main product image of the Kömmerling PremiDoor 76 lift-and-slide patio door

Kömmerling PremiDoor 76

A classic lift-and-slide system (HST) made for glazing medium and large panoramic openings. It pairs remarkably easy operation with strong thermal insulation for today's homes.
Energy efficiency
A+
Material
PVC (Premium)
Profile depth
76 mm (frame 179 mm)
Insulation
5 chambers / 2 seals
Glazing unit
up to 50 mm
Thermal protection (Uw)
≤ 0.9 W/(m²·K)
Sound insulation
≈ 44 Rw(dB)
UW- value ≤ 0.9
Main product image of the Kömmerling PremiDoor 88 passive-house lift-and-slide door

Kömmerling PremiDoor 88

The flagship ultra-premium lift-and-slide system, certified for passive houses. It delivers the greatest possible thermal and acoustic insulation for enormous panoramic glazing.
Energy efficiency
A++
Material
PVC (Ultra-Premium)
Profile depth
88 mm (frame 207 mm)
Insulation
7 chambers / 3 seals
Glazing unit
up to 56 mm
Thermal protection (Uw)
≤ 0.75 W/(m²·K)
Sound insulation
≈ 48 Rw(dB)

Schüco Sliding Systems

UW- value 1.1
Schüco LivIngSlide lift-and-slide PVC patio door

Schüco LivIngSlide

Comfort taken to a new level. A premium PVC lift-and-slide system built on Schüco LivIng 82 technology, with weldable EPDM seals for outstanding airtightness.
Energy Efficiency
A++
System Type
Lift-and-slide (HS)
Material
PVC (Schüco LivIng)
Frame Depth
194mm
Max. Glazing
up to 52mm
Thermal Protection (Uw)
≤ 0.80 W/(m²·K)
Sound Insulation
≈ 45 dB
UW- value 1,1
Schüco ASE 60 aluminium sliding door element close-up

Schüco ASE 60

A fresh comfort standard. A modular aluminium sliding system with a 60 mm sash depth, concealed hardware, and SmartClose soft-close technology.
Energy Efficiency
A
System Type
Lift-and-slide (ASE)
Material
Aluminium
Frame Depth
140mm
Max. Glazing
up to 40mm
Thermal Protection (Uw)
≤ 1.1 W/(m²·K)
Sound Insulation
≈ 41 dB
UW- value 0,80
Schüco ASE 80.HI highly insulated aluminium sliding door

Schüco ASE 80.HI

Passive-house looks. A highly insulating sliding system with an 80 mm sash depth for peak energy performance.
Energy Efficiency
A++
System Type
Sliding (ASE)
Material
Aluminium HI
Frame Depth
180mm
Max. Glazing
up to 60mm
Thermal Protection (Uw)
≤ 0.80 W/(m²·K)
Sound Insulation
≈ 43 dB
UW- value 1,0
Schüco ASE 67 PD frameless panoramic sliding door

Schüco ASE 67 PD

Total transparency. A panoramic aluminium sliding system (PD) featuring a concealed frame, a floor-level threshold, and a tiny 31mm sash meeting point.
Energy Efficiency
A+
System Type
Panoramic (PD)
Material
Aluminium PD
Frame Depth
180mm
Max. Glazing
up to 49mm
Thermal Protection (Uw)
≤ 1.0 W/(m²·K)
Sound Insulation
≈ 46 dB

Cortizo Sliding Systems

UW- value ≤ 1.6
Cortizo COR 4200 aluminium sliding window system product render

Cortizo COR 4200

A celebrated sliding system that can disappear into a wall pocket (Galandage). It strikes an ideal balance between saving space, modern styling and everyday practicality.
Energy Efficiency
B / A
System Type
Sliding (Galandage)
Material
Aluminium RPT
Frame Depth
60 / 115 mm
Max. Glazing
up to 26 mm
Thermal Protection (Uw)
≤ 1.6 W/(m2K)
Sound Insulation
≈ 38 dB
UW- value ≤ 1.3
Cortizo 4900 Corredera thermally broken aluminium sliding system product image

Cortizo 4900 Corredera

A yardstick for modern Hi-Tech sliders. A deeper 70 mm build, stronger thermal insulation and a strict, straight-edged design make it ideal for glazing balconies and terraces.
Energy Efficiency
A / A+
System Type
Sliding (Hi-Tech)
Material
Aluminium RPT
Frame Depth
70 mm
Max. Glazing
up to 36 mm
Thermal Protection (Uw)
≤ 1.3 W/(m2K)
Sound Insulation
≈ 40 dB
UW- value ≤ 1.3
Cortizo C 70 warm PVC sliding window system product render

Cortizo C 70

A warm PVC sliding system. With its 70 mm-deep plastic profile, it is the natural choice for enclosing balconies and loggias, saving floor space while still insulating well.
Energy efficiency
A / A+
System type
Sliding (PVC)
Material
PVC (Greenline)
Frame depth
70 mm
Max. glazing
up to 28 mm
Thermal protection (Uw)
≤ 1.3 W/(m2·K)
Sound insulation
≈ 34 dB
UW- value ≤ 1.0
Cortizo E 170 premium PVC lift-and-slide door system product view

Cortizo E 170

A premium PVC lift-and-slide system (HS-Portal). Its 170 mm build depth makes possible vast panoramic doors that move effortlessly and glide smoothly.
Energy efficiency
A++
System type
Lift-and-slide (HS)
Material
PVC (5 chambers)
Frame depth
170 mm
Max. glazing
up to 40 mm
Thermal protection (Uw)
≤ 0.9 W/(m2K)
Sound insulation
≈ 42 dB
UW- value ≤ 1.3
Cortizo COR Vision minimalist slim-interlock sliding system product render

Cortizo COR Vision

A minimalist icon. This premium sliding system carries a record-slim 20 mm interlock that conjures the illusion of an unbroken glass wall, melting away the divide between interior and landscape.
Energy efficiency
A+
System type
Minimalist (Vision)
Material
Aluminium RPT
Frame depth
116 mm
Max. glazing
up to 30 mm
Thermal protection (Uw)
≤ 1.3 W/(m2K)
Sound insulation
≈ 41 dB
UW- value ≤ 0.9
Cortizo COR Vision PLUS oversized minimalist sliding system product render

Cortizo COR Vision PLUS

Glazing pushed to its limit. This minimalist system builds colossal sliding walls up to 4 metres tall and can even take triple-glazed units.
Energy efficiency
A++
System type
Minimalist (Plus)
Material
Aluminium RPT
Frame depth
180 mm
Max. glazing
up to 54 mm
Thermal protection (Uw)
≤ 0.9 W/(m2K)
Sound insulation
≈ 43 dB
UW- value ≤ 1.1
Cortizo Bi-Fold folding aluminium door system product image

Cortizo Bi-Fold

A bi-fold door system that throws the space wide open. The whole glass wall concertinas into a slim stack to one side, so living room and terrace flow together as a single, partition-free area.
Energy efficiency
A+
System type
Folding (Bi-Fold)
Material
Aluminium RPT
Frame depth
73 mm
Max. glazing
up to 45 mm
Thermal protection (Uw)
≤ 1.1 W/(m²·K)
Sound insulation
≈ 45 dB

Advantages of Sliding Windows

Why customers choose sliding systems for their homes

  • Space saving — sash doesn't swing inward, furniture can be placed right up to the window.
  • Wide aperture — maximum light and air access, panoramic views.
  • Easy to use — smooth sliding even for large sashes.
  • Excellent thermal insulation — modern HST and PSK systems ensure airtightness.
  • Security — multi-point locks and anti-burglar hardware.

Types of Sliding Systems

Choose the optimal system for your home

Will a house with sliding windows be warm in winter?

Absolutely. We use modern systems with multi-contour seals. For residential spaces, we recommend the "warm" Kömmerling or Rehau series, as well as Schüco aluminum systems with thermal breaks. They offer the same airtightness and thermal insulation as standard solid walls, eliminating drafts and freezing.

Which material is better: plastic (PVC) or aluminum?

Depends on the size of the opening. Veka, Rehau, or WDS (PVC) profiles are ideal for warm loggias and standard terrace access doors—they offer the best balance of price and heat.' If you need floor-to-ceiling panoramic glazing over 3 meters wide, we recommend rigid aluminum systems from Cortizo or Schüco, which can support heavy double-glazed windows.

What are PSK and HS portals and what's the difference?

These are opening types. The PSK (parallel sliding) system first tilts and then slides to the side—an excellent choice for apartments and small openings based on Kömmerling or WDS profiles. The HS (lift and slide) system is a premium system (often Cortizo/Schüco): the sash lifts and slides almost silently. Ideal for huge openings without thresholds.

How reliable is the sliding mechanism with frequent use?

Sliding systems are designed for tens of thousands of opening cycles. Our windows use reinforced hardware designed specifically for heavy sashes. Even a massive door weighing 200–300 kg (typical of Schüco or Veka) opens with a light movement of the hand, does not sag, and lasts for years.

Are such large windows safe? Are they difficult to break?

We put safety first. Our portals use tempered glass or laminated glass, which is extremely difficult to break. Furthermore, profiles from Rehau, Cortizo, and other brands are equipped with burglar-resistant fittings with mushroom-shaped pins, making unauthorized entry virtually impossible.

Do sliding windows really save space?

Yes, this is their main ergonomic advantage. Unlike hinged doors, which require room to swing (opening radius), sliding doors move within the frame. This allows you to place furniture right up against the window and maximize the usable space of the room.

Where Sliding Windows Are Used

  • Terrace or balcony exit — wide passage without threshold.
  • Panoramic glazing — maximum light in the living room.
  • Winter gardens — connecting home with nature.
  • Verandas and gazebos — wind protection while preserving the view.

FAQ

Frequently Asked Questions About Sliding Windows

Are sliding windows warm?

Yes, modern PSK and HST systems made of PVC provide excellent thermal insulation thanks to multi-chamber profile and quality seals. They are suitable for year-round use.

What is the maximum size of a sliding window?

Lift-and-slide HST systems allow apertures up to 6 meters wide and up to 2.7 meters high. Sash weight can reach 400 kg.

Can a mosquito screen be installed?

Yes, special sliding mosquito screens are installed for sliding windows, which move along a separate track.

How secure are sliding windows?

Sliding systems are equipped with multi-point locks and can be fitted with RC2 class anti-burglar hardware. Tempered and laminated glass units are also available.

Ready to spec your windows?

Use the 3D configurator to size up your windows and see a fair market price. Or compare the leading PVC and aluminium brands side by side.
Open the calculator
Compare brands