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Solarlux Combiline Bifold Doors
Combining natural timber warmth with aluminium’s durability, the Combiline system provides the perfect balance of style and performance. Ideal for weather-exposed environments and contemporary homes, it offers excellent thermal insulation and quiet, effortless operation.
RC2/RC2N burglar resistance for enhanced safety
Wind load resistance class C3 — reliable in strong weather
Air permeability class 3 for consistent air control
Water tightness rated up to class 7A
Thermal performance of Uw > 1.1 W/m²K
Sound reduction index Rw up to 42 dB for acoustic comfort
The Best of Wood and Aluminium
Weatherproof performance, natural comfort
The Solarlux Combiline bifold system merges the beauty of natural wood interiors with robust aluminium exteriors for enhanced durability. With a slender 147 mm sightline, a thermally broken bionic TURTLE® profile, and FSC-certified timber, this system is ideal for both modern and heritage-style spaces. Its dual-material build ensures both energy efficiency and architectural elegance in even the most demanding environments.
System Highlights & Technical Details
Precision-engineered for performance, flexibility, and long-term durability.
Profile System
- Thermally insulated wooden window system with a building depth of 86 mm in the panel profile
- Multi-laminated, high-quality wooden beams made using selected rifts and half-rifts
- Bottom-running; minimal load support required in case of falls
- Edged (R2) wooden panel frame profiles
- Single-piece, multi-functional bionic TURTLE® break profile force-fitted flush into wood panel
- The panels are manufactured with a form-fitted corner joint. A rounded collet fits exactly into the slot on the counter-piece, and an additional screw connection makes for an even sturdier panel joint.
- Controlled drainage
- Running and guide rails built into the system
- Separate levels for runners and locks
- Accessible and living space & floor tracks also available
- Built-in, concealed cable routing
Combiline Features
- An angular aluminium cover is mounted on the outside of the wood panel. The sub-frame comprises a static aluminium structure (mitre joint) that is faced with solid-wood beams on the inside of the frame
- Slim sight line of 147 mm in panel joint
Sealing System
- The seal encompasses two all-round sealing levels with constant gap sizes and even seal pressure between the panels
- Sealing levels not interrupted by fittings
- Sheathed foam seals with optimum sliding properties
Design Variants
- Panels fold either inwards or outwards, to either left or right
- Left and right sliding panel pairs also available
- Floor track designs without rebates in compliance with German standard DIN 18040 on “Accessible construction”
- Floor tracks available as minimal floor tracks without height offset
Fittings
- No protruding running tracks or guide rails
- Fittings with one-hand operation in the break profile built into the wooden beam
- With optional built-in Twin X® concealed panel centring mechanism for high wind loads
- System hinges also suitable for heavy panel weights
- System adjustment mechanism built into sub-frame rebate, outside the sealing level
- The specially shaped stainless-steel running track with tapered track roller allows the use of unguided carriages
- Stainless steel track roller ball bearing runner mechanism: stainless steel track rollers and stainless-steel bearing surfaces for quiet running and very long service life
- Easy-running, low-wear carriage fitted with double-row deep-groove ball bearings and built-in anti-prying guard
- Sliding lock or optional lock-in-place panel for controlled ventilation
- High-quality, stainless-steel Solarlux designer handles
- Lock-in-place, one-hand operation thanks to special gears with stroke of 24 mm
- Pass door available with latch-key-activated, multi-point lock and profile cylinder
- Secure hinge pins
- Secure cleaning pin with convenient unlocking mechanism and misuse prevention system to allow cleaning of the outsides of the panels on inwards-opening bi-folding door elements
- Thanks to its defined locking points, this cleaning pin can be used for both paired and unpaired bi-folding doors
- Lock monitoring system with reed contacts and concealed cable routing
- Patented “Comfort Snap” panel catch
- Optional load-transferring plates with centring grooves and sealing cushions for mounting the sub-frame profiles and floor track
- Additional mounting screw covers in frame rebate
Environment & Sustainability
- Sustainable manufacturing
- FSC® (Forest Stewardship Council), COC (Chain Of Custody)
- PEFC (Programme for the Endorsement of Forest Certification Schemes)
- Certified disposal in accordance with DIN EN ISO 14001:2009
Certifications & Testing
- In-house production control
- Tested in accordance with DIN EN 1090, design class EXC 1 & EXC 2, certified in accordance with DIN ISO 9001
What Our Customers Say
We take pride in delivering exceptional glazing solutions and outstanding customer service. Here’s what some of our happy clients have to say about working with Minimal Frame Projects.
Combiline in Context
Discover projects where Combiline enhances both performance and design
