SolFaction is launching an updated version of the NederLux Solar Pro acrylic collection in collaboration with Sauleda. Since the introduction of its own in-house collection — at the time still under the name Guillaume Janssen — much has changed. The confection divisions of Guillaume Janssen have since merged with NederLux under the new name SolFaction. Jos Stoit: “The collaboration within SolFaction brings us so much new energy that we can continue to take new steps moving forward.” Meanwhile, Sauleda from Barcelona (Spain) has also updated its collections and launched many beautiful new designs. In addition, all fabrics are now coated with a PFAS-free coating (Sauleda Fabric Protector), which makes them more resistant to water, mildew, dirt and UV. Most colours from the previous collection can also be found in the new collection; a total of seven colours have been phased out by Sauleda and are no longer available. Bram Plattel: “The NederLux Solar Pro acrylic collection is a balanced selection of designs, including a number of beautiful modern colours taken from the Sauleda Mediterraneo collection. All Sauleda fabrics are now completely PFAS-free, and we therefore process them entirely without PFAS-containing materials.” Klaas-Jan Postma: “NederLux Collections will continue to expand its in-house collections alongside the already well-known polyester fabrics from Swela.”

Guillaume Janssen and SolFaction enter exclusive partnership with Plastex for the Benelux

Guillaume Janssen and SolFaction have entered into an exclusive partnership for the Benelux with the Swiss company Plastex SA, a specialist in high-quality plastic components for sun shading. This collaboration brings several innovative systems to the Benelux, including the ClipZip internal rail system, the Aviasta top tube profile, the Aviasta Ultra bottom bar and the Boba+ components for screens. With this expansion, the product range in the region will be further strengthened — under a new name, which will be officially launched at a later stage. Ruben de Jong: “We have been very satisfied for years with the high quality of fabrics in our in-house collections. With the Boba+ bottom rail from Plastex, we can now finish screen fabrics more beautifully and much more easily.”

NederLux Solar Screen collection expanded with 12 new sergé colours!

In addition to the updated acrylic collection, the screen fabric collection has also been revised. Due to great demand, no fewer than 12 new colours have been added, available immediately. In total, the Sergé collection now consists of 22 colours. “This expansion offers even more choice within the high-quality, dimensionally stable fabric known for its matte, stylish finish and non-fraying technology, which prevents fraying during cutting.” These screen fabrics are available confectioned, or by the roll or cut length, from SolFaction. Klaas-Jan Postma: “As a reliable partner in the sun shading industry, SolFaction aims to offer sustainable, high-quality and customer-oriented solutions for the growing demand for effective sun shading. As a universal and independent fabric supplier, SolFaction wants to offer customers the widest possible product range.”

Published in Z&R and ZVM, December 2025, all texts and photos © Guillaume Janssen.

In a time when architecture is becoming increasingly innovative and sustainability plays a central role, solar shading is more essential than ever in every building project. Not only does it contribute to the visual character of a building, but it also plays a key role in comfort and energy efficiency. Positioned at the intersection of functionality and aesthetics, Guillaume Janssen has established itself as the ideal project supplier for solar shading systems and fabric confection, both nationally and internationally.

Expert in Custom Solutions

Where standard solutions fall short, Guillaume Janssen’s strengths truly come to the forefront. The company is renowned for its expertise in complex shapes – from triangular and asymmetrical windows to round constructions and extra-large ZIP screens. Thanks to its extensive range of shading systems, Guillaume Janssen can provide the right solution for virtually any challenge.

From Palace Het Loo to The Met in New York

With an impressive portfolio of prestigious projects, the company proves its added value time and again. In the Netherlands, Guillaume Janssen has worked on projects such as the renovated Boijmans Van Beuningen in Rotterdam, Palace Het Loo in Apeldoorn, WTC Rotterdam, and Slotervaart (fabric confection) in Amsterdam. Internationally, the company has also left its mark with projects such as the iconic Metropolitan Museum of Modern Art in New York, the futuristic The Shed in New York, and solar shading for the skyboxes of a well-known London football club.

Collaboration from Day One

What sets Guillaume Janssen apart is the close involvement in every project. Sales Manager Bram Plattel is often personally on-site to support clients. “Our added value lies not only in the products but also in our consultative approach,” he explains. “Whether it’s on-site measuring or advising on a technical installation solution, we contribute from the very beginning. That input is then passed on to our engineers, who develop a tailor-made solution that fully meets the customer’s needs.”

Project Exposure with Visual Content

As a finishing touch, Guillaume Janssen offers clients the opportunity to give their project additional exposure. “With professional photos and videos, we aim to capture the shading solutions on-site. These are then shared by our marketing department on our website and social media channels.”

Quality and Reliability Recognized Worldwide

With years of experience and a strong reputation as a reliable partner in the shading industry, Guillaume Janssen is active worldwide. The company not only delivers high-quality products but is also known for its flexibility, technical expertise, and customer-oriented approach. Whether it concerns fabric confection or the realization of complex solar shading structures, the combination of craftsmanship and innovation makes Guillaume Janssen a trusted name within the international construction and architecture sector. More information about our projects can be found here.

Published in Z&R, September 2025. All texts and photos © Guillaume Janssen.

On February 14, the Benelux edition of the Soltis Tour took place at Guillaume Janssen in Zwolle. This traveling European campaign highlights the latest innovations in solar shading fabrics and systems for industry professionals.

More than 100 solar shading experts and manufacturers gathered in Zwolle for this inspiring event. The guests received a warm welcome from the Guillaume Janssen team. Managing Director Jos Stoit opened the event with a welcome speech, after which the attendees were divided into groups to begin the tour.

Guided Tour with Serge Ferrari and Its Partners

The Serge Ferrari Group was present with two impressive trucks. In the first truck, visitors were given a presentation on the latest Soltis fabric collections. Alongside an extensive explanation, live demonstrations were provided, allowing guests to closely examine and experience the materials. The second truck showcased the products and services offered by the partners of the Soltis Tour.

A Behind-the-Scenes Look at Guillaume Janssen

In addition to the trucks, visitors received an exclusive tour of Guillaume Janssen’s renovated showroom. More than 20 innovative solar shading systems were on display, with the Guillaume Janssen team enthusiastically explaining the various solutions and applications. The tour continued in the fabrication department, where visitors could follow the production process of solar shading fabrics up close—from fabric to finished product.

A Successful Day

Managing Director Jos Stoit looked back on the event with satisfaction: “The Soltis Tour perfectly aligns with our mission. Our products serve a niche market, and by hosting this event at our own location, customers get the opportunity to see and experience our innovations up close. This truly puts the spotlight on Guillaume Janssen’s products.”

Published in Z&R, April 2025. All texts and photos ©Guillaume Janssen.

Modern architecture is constantly evolving. More and more, we see homes with large windows, slanted windows, and asymmetrical window shapes. These designs provide stunning views and plenty of natural light, but they also present challenges—especially when it comes to sun protection and heat management. With increasing solar radiation and climate change, the demand for effective sunshades for slanted windows is growing.

Do you live in a house with slanted or asymmetrical windows? And are you looking for a solution? Read on to find the perfect solar shading for your windows.

Innovative Solar Shading for Slanted Windows

Fortunately, sunshade technology continues to advance. At Guillaume Janssen, we respond to the demand for sunshades designed for unique window shapes. For over 15 years, we have been manufacturing custom sunshades for slanted and asymmetrical windows. Every window deserves the perfect protection against sunlight and heat!

What solar shading solution do we offerfor slanted or asymmetrical windows?

As a leading manufacturer of specialized solar shading systems, we offer a wide range of options for slanted and asymmetrical windows. We provide tailor-made solutions to meet your sun protection needs. Below is an overview of our systems for slanted and asymmetrical window structures.

Solar Shading for Slanted Windows

Sunshade screens from the GJ – MW Triangular Series are the ideal solution for triangular windows. These high-quality screens:
✅ Are suitable for both indoor and outdoor installation
✅ Can be manufactured up to 6 meters wide and 9 meters high
✅ Move from top to bottom as standard but can also open sideways
✅ Feature Soltis 92 or Soltis B92 (blackout) fabric for optimal sun protection
✅ Are equipped with electric motors and can be controlled via remote control or app

Solar Shading for Asymmetrical Windows

For asymmetrical window shapes, the GJ – MW Angular Series sunshade screens offer the perfect solution. These screens:

✅ Can be manufactured up to 6 meters wide and 6 meters high
✅ Are suitable for both indoor and outdoor applications
✅ Move from top to bottom as standard, with an option for sideways operation
✅ Come with Soltis 92 or Soltis B92 (blackout) fabric
✅ Are equipped with electric motors and can be controlled via remote control or app

Request a Quote for Custom Solar Shading

Interested in our solar shading for slanted or asymmetrical windows? Request a free, no-obligation quote via our contact form. Our solar shading systems are sold through our official GJ dealers. They will advise you on the best solution and provide a custom quote.

Get in touch with us, and we will arrange for a local GJ dealer to contact you.

???? Prefer to contact a GJ dealer directly? That’s possible too! Find a sales point near you.

The confection divisions of Guillaume Janssen and NederLux have officially merged and will continue together as SolFaction. Led by owners Klaas-Jan Postma (NederLux) and Jos Stoit (Guillaume Janssen), this marks the emergence of a strong new player in the solar shading industry. SolFaction focuses on both roll and cut-to-size sales of fabrics, as well as the confection of high-quality solar shading fabrics. Together, they form a very strong independent confection company with the largest range of solar shading fabrics: from recycled PET bottles and standard acrylic to various Serge and Soltis® collections, and even fabrics for indoor shading solutions.  

The merger is driven by the ambition to work more efficiently and innovatively together while further improving product quality and availability for customers. SolFaction not only offers benefits for customers and partners but also for employees and the future of the solar shading industry.

Benefits for Customers and Partners

The establishment of SolFaction brings significant advantages:

• Improved Service: The combined expertise of both teams ensures an enhanced customer experience. From quotation requests to delivery, SolFaction supports its customers at every level and is dedicated to providing custom solutions and quality.
• Faster Production and Delivery:With two production locations in Zeewolde and Zwolle, SolFaction can accelerate production processes, resulting in shorter lead times. This enables customers to respond quickly to the demand for solar shading solutions, with the shortest possible delivery times.
• Enhanced Efficiency and Sustainability: Through economies of scale and optimized processes, SolFaction can produce more sustainably, reducing the ecological footprint of its activities.

About the Owners

Klaas-Jan Postma, the driving force behind NederLux, has extensive experience in the solar shading industry and is renowned for his customer focus and craftsmanship. Jos Stoit, owner of Guillaume Janssen, specializes in high-quality solar shading confection and delivers bespoke solutions at the highest level. Both are highly enthusiastic about the opportunities SolFaction offers to elevate the sector and work on innovative solutions for the future of solar shading. With SolFaction, Klaas-Jan Postma and Jos Stoit aim not only to strengthen their field but also to build a better future for the solar shading industry in the Netherlands and beyond.

About SolFaction

SolFaction strives to be a reliable partner in the solar shading industry, offering sustainable, high-quality, and customer-focused solutions to meet the growing demand for effective solar shading. The merger enables the company to remain a leader in quality and flexibility, with a mission to provide an excellent experience for both customers and employees.

After launching an acrylic fabric collection, Guillaume Janssen – a producer of innovative solar shading systems and fabric maker – introduced its own screen fabric collection last year. This collection has been so well-received in the solar shading market that the range is now being expanded. “This further strengthens our role as an independent fabric maker,” says account manager Ruben de Jong.

As a leading independent fabric maker, Guillaume Janssen has stocked screen and acrylic fabric collections from Europe’s top solar shading suppliers for over 40 years. Recently, the company invested in an additional sealing machine for the confection of its various screen fabric collections. “We are actively working on expanding our new Sergé screen fabric collection, marketed under the name GJ – Solar Screen Collection,” Ruben explains. “By 2025, the variety of colors will grow from 10 to 23. In addition to Sergé designs, the collection also includes 10 Soltis Veozip designs. These fabrics stand out due to the advanced Smart Yarn Technology, which minimizes rippling and adds extra durability to the fabric.”

Air-Purifying Fabric

Guillaume Janssen’s unique fabric collections are divided into several categories. “This allows us to supply the entire solar shading industry with the right type of fabric,” Ruben clarifies. One such category is the GJ-Solar Pro Collection, which features the Sauleda Green by Guillaume Janssen fabric. “This is the first sunshade fabric that purifies the air through photocatalysis. This coating also makes the fabric significantly more resistant to dirt and staining. With this revolutionary fabric, we recently completed an exciting replacement project in Amsterdam in collaboration with our client, with a focus on eco-friendliness and sustainability.”

Soltis Tour

Since 2000, Guillaume Janssen has established its name in the European international market as a producer of innovative solar shading systems. On February 14, 2025, businesses from across the sunshade industry will have the opportunity to learn more about the Zwolle-based company. “On that day, the European roadshow of our supplier Serge Ferrari will visit our premises, showcasing the SOLTIS® brand to professionals in two showroom trucks,” says Ruben. “We will also offer visitors the chance to explore our model showroom and workshop in Zwolle. We warmly invite everyone to come and view our new collections or visit our updated website at gjbv.nl.”   

Published in Z&R December 2024 ©Z&R.

We would like to inform everyone that the SOLTIS TOUR will also be making a stop in the Netherlands. On Friday, February 14, 2025, Guillaume Janssen, together with the Serge Ferrari Group, will organize the Dutch edition of the tour in Zwolle. This will be the only stop where the SOLTIS TOUR will be seen in the Benelux. An event you won’t want to miss!

SOLTIS TOUR 2024/2025

The SOLTIS TOUR is a roadshow where installers, manufacturers, and clients come together for a unique experience. For this stop in the Netherlands, the Serge Ferrari Group will deploy two special trucks to provide an immersive experience. One truck will be used to showcase Soltis products, while the second truck will feature various products from partners of the SOLTIS TOUR. 

Be among the first to discover a revolutionary solution that redefines the standards of solar shading. Don’t miss the unveiling of the Soltis Tour.

The Guillaume Janssen Experience

At Guillaume Janssen, we would like to show everyone our recently renovated building. In our model and training room, you can view a variety of special (solar shading) products. Additionally, guided tours of our factory will be provided, where you will see how fabrics are crafted and how our unique sun protection systems are produced. As a surprise, we have prepared several fun giveaways for visitors of the SOLTIS TOUR.

Sign up now!

You can register for a visit to the SOLTIS TOUR in the Netherlands via the registration button in this message. There are a limited number of spots available for the tour, so don’t delay! We look forward to seeing you on February 14, 2025, in Zwolle!

Since 2000, Guillaume Janssen has established its name in the European and international markets as a producer of unique solar shading systems. Both as a fabric manufacturer and a system supplier, the company has been closely involved in various iconic projects both domestically and internationally.

In recent years, Paleis Het Loo underwent an extensive renovation. "During this process, the solar shading systems also had to be renewed" says Bram Plattel, Sales & Marketing Manager at Guillaume Janssen. "As part of this project, we manufactured more than 20 unique solar shading systems from our GJ – MW Series." 

Paleis Het Loo is one of many projects in a series of (inter)national ventures where Guillaume Janssen has made his mark as a project supplier of unique, unconventional solar shading systems. "We primarily come into play when architects design buildings with large glass facades and distinctive architecture. This includes museums and football stadiums, but also modern office buildings and homes," says Bram. 

As a prime example of such a project in the Netherlands, he mentions the Museum Boijmans Van Beuningen in Rotterdam: "In collaboration with the solar shading company De Haan Westerhoff, we implemented a curved screen solution to optimally darken several facades. This is necessary to minimize the exposure of the artworks in the depot to UV radiation."

For 'The Pulse,' a prestigious project in the Zuidas area of Amsterdam, Guillaume Janssen manufactured more than 600 metallized and SMI motorized zip screens, installed at various angles. "In this project we closely collaborated with a partner: Gevex Professional solar shading," says Bram. "This is the direction we're increasingly heading towards—collaborating with dedicated partners where expertise in measurement, installation, and maintenance is ensured."

New York's museum

With its remarkable solar shading systems, Guillaume Janssen has also made a name for itself beyond the country's borders, particularly in the museum world. For a project at the Metropolitan Museum of Art in New York—one of the world’s largest and most prestigious art museums—the company from Zwolle collaborated with the American solar shading specialist Draper. Bram explains, “For the Rockefeller Wall, as the southern wing of this museum is called, we developed and supplied unique bottom-up running ZIP systems.”

In any case, where other solar shading companies have to say 'no,' the challenge only begins for Guillaume Janssen. This was also the case with a project for the World Trade Center in Rotterdam. “For this project, we supplied elongated systems that run at an angle, with a significant projection of up to 12.5 meters in length.”

More information about our unique sunshade projects can be found on the projects page of our website.

Published in Z&R July 2024 ©Z&R

  

After an absence of 6 years since the last edition of the R+T in Stuttgart, the 2024 edition provided us a fantastic opportunity to present our new corporate identity. With a completely redesigned booth in our new corporate style, we traveled to Stuttgart.

At our booth, products from our range of special sun protection systems were on display, including screens from our GJ - SZ Curved and GJ - MW Angular series. In addition to our own screens, we had another eye-catcher, a retractable arm awning. This was a collaboration between Soons Zonwering and Guillaume Janssen. The retractable arm awning was manufactured by Soons Zonwering and we produced a tailored fabric from our own GJ - Solar Pro Collection, resulting in a stunning outcome.

At the fair, we introduced our new GJ - Solar Screen Collection, a new collection consisting of Sergé screen fabrics and Soltis Veozip fabrics, which was warmly received by our visitors. We also distributed beautiful bags to visitors of our booth as a token of appreciation. These bags were made and designed by our own production department and produced using leftover materials.

We look back with pride on a very successful and fruitful week, and we are already looking forward to the next edition of the R+T!