Solarlux Woodline Bifold Doors
With timeless timber aesthetics and modern engineering, the Woodline system combines natural warmth with exceptional performance. It offers robust insulation, smooth folding operation, and a classic design appeal for heritage and contemporary homes alike.
RC2/RC2N burglar resistance for secure living
Wind load resistance class C3 for exposed locations
Air permeability class 3 for tight sealing
Water tightness rated up to class 7A
Thermal transmission coefficient ≥ 1.0 W/m²K
Sound reduction index Rw up to 42 dB
Crafted Timber, Engineered to Last
Solid wood frames with slim sightlines and smart design
The Woodline bifold door features high-quality, multi-laminated wooden beams with concealed aluminium reinforcement, delivering enduring structure and refined finish. With a slender 143 mm sightline and FSC®-certified materials, Woodline balances environmental responsibility with design excellence. Designed with comfort, functionality, and precision in mind, it suits everything from traditional renovations to modern eco homes.
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
Woodline Features
- 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
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
- With optional convection chamber interruption seals for improved thermal transmittance
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
- RC2/RC2N version available as an option
- Tilting or turn-and-tilt panel can be built into the frame-side
- panel of a panel pair with concealed fittings
- Modular system allows folding, tilting, turn-and-tilt and fixed elements to be combined in a single frame with an uninterrupted floor track thanks to integral profile
- Bi-folding door available on balustrade or with top light in a frame
Fittings
- No protruding running tracks or guide rails
- Fittings with one-hand operation in profiles
- 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 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
- 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.
Woodline in Natural Settings
Explore projects where Woodline enhances the warmth and rhythm of architectural design
