I once stood on a hotel job site explaining to the owner why the new windows didn’t fit right.
The supplier I picked promised quality, but what arrived was far from it. Wrong sizes, poor finish, endless excuses.
It made me look unprepared, and I don’t want you in that same spot.
You’re here because you want real answers about German UPVC window makers. I’ve been where you are. I’ve managed projects that went wrong, and others that went perfectly because the right supplier was chosen.
This article gives you the top 6 German UPVC window manufacturers, with details that matter, strength, reliability, and performance.
Think of it as a shortcut to avoid the mistakes I once made.
So let’s get started!
Quick Comparison Chart
Before diving into each manufacturer in detail, here’s a quick snapshot to help you compare them side by side. Think of this table as your map before the journey.
| Manufacturer | Founded / HQ | Key Products | Technological Innovations | Services & Support | Not Ideal For | Best For |
| VEKA Group | 1969, Sendenhorst | Windows, doors, sliding, outdoor | VEKA SPECTRAL, recycling loop, Class A | Technical help, digital tools, logistics | Small or highly custom orders | Global projects |
| GEALAN | 1921, Oberkotzau | LINEAR, S-8000, sliding doors | Acrylcolor, STV® bonding, bio-PVC | Tool shop, academy, planning tools | Unique, niche designs | Cost + performance |
| profine (Kömmerling) | 2003, Pirmasens | Windows, sliding, shutters, PVC | Hybrid systems, SmartHome, surface finishes | Large output, global network, partners | Boutique or small projects | High-volume supply |
| REHAU Group | 1948, Rehau | Tilt-turn, sliding, casements | RAU-FIPRO®, Passivhaus, ARTEVO | Fabricators, custom configs, delivery | Buyers wanting direct sourcing | Energy efficiency |
| Unilux | 1955, Salmtal | Windows (uPVC, wood, alu), doors | In-house testing, hybrids, patents | Dealer network, design help, after-sales | Mass-market supply | Premium finishes |
| Niederhofer | 1953, Germany | uPVC, alu, wood windows, doors | Uses REHAU/Schüco, energy designs, facades | Personal consult, custom orders, local support | Large international supply | Custom regional projects |
This table is just the starting point. Let’s move on and explore what makes each company stand out.
1. VEKA Group
I first learned about VEKA during a villa project years ago. The client wanted windows that could handle heat, storms, and time. At first, I was unsure, but once I saw how their frames held up, I knew they were different. VEKA started in 1969 in Sendenhorst, Germany. What began as a small family business has grown into one of the world’s largest uPVC (unplasticized polyvinyl chloride) profile makers.
Today, VEKA runs factories on four continents and employs more than 3,000 people. Their yearly sales are over €1.5 billion, with more than 80% coming from international markets. That scale matters if you’re planning villas, hotels, or greenhouses.
Products
- Window Systems: VEKA makes standard and high-performance windows designed for long service life. The VEKA 82 Series is often used in large commercial projects because it can handle harsh weather.
- Residential Doors: Their door systems are built with thick walls and reinforced strength. These are popular for main entrances and side doors in both homes and hotels.
- Sliding Doors: The VEKAMOTION series is one of their highlights. It allows for wide openings and smooth operation, making it useful for villas with patios or resorts with ocean views.
- Outdoor Solutions: VEKA also supplies profiles for shutters, fencing, and decking. This gives you more options to match windows and outdoor living spaces.
Technological Innovations
- VEKA SPECTRAL: A special surface finish that looks ultra-matte and feels silky. It resists scratches, fading, and dirt, keeping windows clean and stylish even in high-use areas.
- Closed Recycling Loop: VEKA launched this system back in 1993 to recycle old PVC profiles into new ones. It cuts down on waste and supports a full circular economy, making it appealing for eco-conscious projects.
- Class A Profiles: All VEKA profiles are made to Class A standards under DIN EN 12608. This means thicker walls, stronger structure, and a lifespan of 30+ years for doors and windows.
Services
- Technical Guidance: VEKA helps fabricators and builders match the right profiles with project requirements. This support can save you time and prevent costly mistakes during planning.
- Digital Tools: They offer software that makes ordering and project management smoother. These tools simplify tasks for engineers, contractors, and distributors handling multiple sites.
- Logistics Support: With factories across continents, VEKA can coordinate large orders and international shipments. Their logistics team focuses on helping projects stay on schedule.
Key Takeaways
VEKA is a strong fit if you want German-made profiles with proven durability and a reliable global supply network. But if you’re looking for small, direct orders or highly customized finished windows, their setup may feel more industrial than personal.
2. GEALAN
GEALAN has been part of the building industry since 1921, beginning as a small company in Oberkotzau, Germany. Over the years, they shifted into uPVC profile systems and became one of Europe’s leading players. Today, they employ more than 1,700 people across Europe and reached about €320 million in sales in 2024.
What stood out to me was how they handled a project where budget was tight but the client wanted lasting performance. GEALAN’s systems met both goals, solid frames without breaking the budget. For villas or hotels, having a supplier with that kind of balance is a big plus.
Products
- Window and Door Profiles (S-8000 system): These 74 mm deep profiles offer great thermal and sound insulation. They feature multi-chamber construction, so you save materials without losing strength.
- GEALAN-LINEAR: A system that blends minimalist design with solid performance. It’s versatile enough for modern homes or luxury villas and supports slimmer frames while keeping insulation tight.
- Lift-Slide & Multi-Slide Options: These work great for big open spaces. They have smooth movement and let in lots of light—perfect for resorts with ocean views.
Technological Innovations
- GEALAN-acrylcolor®: A tough surface finish that fuses acrylic glass to uPVC. It resists scratches, fading, and weather, so your windows stay looking fresh longer.
- STV® (Static Dry Glazing): This bonding system helps support large glass areas by enhancing stiffness. It cuts weight without compromising strength.
- BALANCE Profiles with Bio-attributed PVC: A newer sustainability step—profiles that use biomass-based PVC to lower CO₂ emissions in production.
Services
- In-house Tool Shop & Extrusion Mastery: GEALAN makes its own tools and runs all extrusion in-house. That gives them control and consistency that benefits big projects.
- Training via GEALAN ACADEMY: They offer seminars and technical training for their partners. After attending, I’ve seen teams reduce installation errors and save time.
- Architect Support & Digital Planning Tools: They help architects match profile systems to design needs. Their digital tools make planning and quotes easier to manage.
Key Takeaways
GEALAN works well if you want German-engineered systems that balance cost, energy efficiency, and modern design. But if your projects demand highly customized finishes or unusual styles, their structured systems may feel a bit standard.
3. profine Group (Kömmerling)
profine Group was founded in 2003 but its history stretches back more than 100 years through the brands Kömmerling, KBE, and TROCAL. Headquartered in Pirmasens, Germany, profine has built a reputation as a global leader in uPVC profile systems, supplying to over 100 countries worldwide. With 42 branches and plants across 38 countries, they can handle both large international projects and regional developments.
I first came across Kömmerling profiles while working on a coastal property. The client wanted windows that could resist heavy winds and salty air. The profiles performed better than expected, holding strong where cheaper frames would have failed. That experience gave me confidence in their long-term value for hotels and villas in tough climates.
Products
- Window and Door Systems: profine offers different construction depths, including 70 mm, 76 mm, and 88 mm systems. These options let you choose the right balance of insulation, durability, and cost.
- Sliding Systems: Their PremiDoor, PremiLine, and PremiSlide lines cover both premium and standard sliding solutions. PremiDoor is often used in large villas or resorts because of its high stability and smooth operation.
- Shutter Systems and PVC Sheets: In addition to windows and doors, profine supplies shutter systems and PVC sheets. These extras give contractors flexibility to meet varied project needs.
Technological Innovations
- Hybrid Systems: profine combines uPVC with aluminum in some systems. This mix delivers the insulation of plastic with the strength of metal, a useful option for large openings in modern buildings.
- SmartHome Solutions: Kömmerling integrates smart security and automation features into their systems. This helps hotels and residential projects meet growing demand for smart building technology.
- Surface Design Options: profine provides a wide range of finishes such as proCoverTec, laminates, and AcrylColor. Architects can choose colors and textures that fit unique project aesthetics.
Services
- Large-Scale Production Capacity: profine produces around 450,000 tons of profiles every year. That capacity allows them to support even the biggest projects without delays.
- Global Network: With plants and offices in many countries, they can deliver materials closer to your project site. This reduces shipping time and simplifies logistics.
- Customer Partnership: profine emphasizes close cooperation with its fabricator partners. They focus on making sure partners have the technical details and support needed to complete jobs efficiently.
Key Takeaways
profine is a strong partner if you need high-volume supply, diverse systems, and the backing of a global network. But if your focus is on smaller boutique projects with custom, one-off requests, their scale and structure may feel less personal.
4. REHAU Group
REHAU has been around since 1948, starting in the Bavarian town of Rehau, Germany. Over the decades, they grew into a global company with more than 20,000 employees and operations in over 170 locations worldwide. They are still family-owned, which says a lot about their consistency and long-term vision.
I used REHAU once on a residential upgrade where the client wanted sliding doors that blended indoor and outdoor spaces. Their SecuriSlide system worked perfectly, and the client still tells me how much they enjoy the open feel it created. That experience showed me how their designs can add comfort as well as function.
Products
- ARTEVO Tilt-Turn Windows and Balcony Doors: These systems combine flexible design with strong performance. They are a popular choice for hotels and villas because they can swing open or tilt for ventilation.
- Sliding and French Doors: REHAU offers large sliding panels, including the SecuriSlide line. These create wide openings and stack neatly to the side, making them ideal for resorts or greenhouses.
- Casement and Fixed Windows: Their classic window systems offer energy savings and sound insulation. These options are common for villas or multi-unit housing projects.
Technological Innovations
- RAU-FIPRO® Material: A glass-fiber reinforced PVC that adds strength to frames. It allows for larger, more stable window and door designs without adding heavy steel reinforcements.
- Passivhaus Projects: REHAU played a role in building the first certified German Passivhaus in North America. Passivhaus is a building standard that cuts energy use dramatically. Their involvement shows real commitment to energy efficiency.
- ARTEVO System Design: This product line combines flexibility with RAU-FIPRO®. It allows modern designs while still meeting demanding energy and performance standards.
Services
- Fabricator Network: REHAU works through a network of trained and certified fabricators. This means your local installer has direct access to global expertise.
- Custom Configurations: Their partners can create designs that fit your project, from large hotel sliding doors to smaller villa upgrades. This flexibility helps avoid cookie-cutter solutions.
- Global Delivery Support: With 170 locations, REHAU can coordinate production and delivery across regions. That makes them reliable for projects in both Europe and abroad.
Key Takeaways
REHAU works well if you want advanced materials, energy-efficient systems, and the backing of a trusted global brand. But if you prefer dealing directly with the manufacturer instead of going through a local fabricator, their partner-based model may feel less direct.
5. Unilux
Unilux was founded in 1955 in Salmtal, Germany, by Nicholas Meeth as a small carpentry shop. Over the decades, it grew into one of Europe’s leading manufacturers of finished windows and doors. Unlike some profile extruders, Unilux builds complete products in wood, uPVC, aluminum, and hybrid combinations.
I first learned about them on a church renovation project. The design needed durable frames but also a natural look that fit the building’s character. Unilux delivered both, and I saw how their mix of traditional craftsmanship and modern production can make a difference for projects that need both style and strength.
Products
- Windows in Multiple Materials: Unilux offers full-frame windows in uPVC, wood, and aluminum. These choices give architects flexibility to match both performance and aesthetics.
- Entrance Doors: Their main doors come with secure multi-point locking systems. Options include four- and five-point locks and laminated safety glass, making them ideal for hotels or villas with high security needs.
- Balcony and Patio Doors: These doors are designed for smooth access and can be built with extra safety features. They work well in residential projects where both access and protection are important.
Technological Innovations
- In-House Testing: Unilux uses advanced simulation equipment to test frames under stress. Prototypes are pushed to failure before mass production begins, ensuring only the strongest designs go to market.
- Hybrid Material Designs: By combining wood with aluminum or uPVC, Unilux balances natural aesthetics with durability. This approach helps properties that need a premium look with low maintenance.
- Patented Frame Designs: The company holds patents on innovative frame structures. These patents reflect their ongoing work in improving energy efficiency and structural stability.
Services
- Dealer Network: Unilux works with over 500 authorized dealers worldwide. This gives builders local points of contact backed by a strong central manufacturer.
- Design Consultation: Their partners offer direct support with technical drawings, thermal simulations, and compliance. I’ve seen these tools speed up approvals on challenging projects.
- After-Sales Support: Service continues after installation. Dealers provide follow-up checks and advice, which is especially helpful for complex projects like hotels or office buildings.
Key Takeaways
Unilux is a strong fit if you need finished windows and doors that blend craftsmanship with reliable engineering. But if your focus is strictly large-scale, standardized supply at lower cost, their custom-built approach may feel less efficient.
6. Fensterfabrik Niederhofer
Fensterfabrik Niederhofer was founded in 1953 as a family-run window company in Germany. Unlike the global giants, they remain a smaller manufacturer, focusing on finished windows, doors, and façade systems. Their reputation has been built over decades, with a strong emphasis on personal service and craftsmanship.
I once worked with a boutique hotel project where the owner wanted a mix of aluminum and uPVC frames for different sections of the building. Larger suppliers didn’t want to handle the mix. Niederhofer did, and the client appreciated the flexibility. That project showed me how a smaller company can adapt more quickly to special requests.
Products
- uPVC, Aluminum, and Wood Windows: They offer a full range of frames across materials. This flexibility helps match architectural styles from modern villas to traditional houses.
- Front Doors: Available in several materials, their doors are designed for both durability and security. These are often used in small-scale projects where a personal look matters.
- Lift and Slide Doors: Built for larger openings, these systems let in light and expand living spaces. They are suitable for resorts or villas that want seamless indoor-outdoor transitions.
Technological Innovations
- Integration with Leading Profiles: Niederhofer uses profiles from well-known brands like REHAU and Schüco. This means their finished products carry the latest performance features without needing to develop profiles themselves.
- Energy-Efficient Designs: Their systems are built to meet modern energy standards. For small hotels or greenhouses, this helps reduce heating and cooling costs.
- Customized Facade Solutions: By combining different materials and finishes, they can create solutions tailored to modern architectural styles.
Services
- Personal Consultation: As a family-run business, they often provide direct advice to clients. This makes them appealing for builders who want more personal involvement.
- Custom Orders: They focus on flexible, project-specific solutions. Pricing is available upon request, which is common for smaller, custom projects.
- Local Delivery and Support: With a more regional base, their logistics work best for projects in Germany or nearby markets. That makes them reliable for European jobs, though less global in reach
Key Takeaways
Fensterfabrik Niederhofer is a good option if you want personalized service and flexibility from a family-run business using proven profiles. But if your project requires large-scale supply or international logistics, their smaller size may feel limiting compared to global manufacturers.
Can’t Find The Right Supplier in Germany?
Still unsure after looking through the seven German names? Maybe delivery times don’t line up. Or the product mix feels too limited.
That’s normal. Not every supplier matches every project.
German manufacturer are strong, but what if you’re open to exploring outside Europe?
Here’s where Vallisco can help. We’re based in China and support builders like you who need:
- Adjustable Specs: We can modify sizes, finishes, and features so they fit your plans.
- Smaller Quantities: No pressure to over-order. We match your stage, whether prototype or rollout.
- Fast Responses: Our team works across time zones. You get clear updates without waiting.
You’ve done the research in Germany. Now it could be time to look wider. Let’s see if we’re the right fit for your project. Contact us today!
Conclusion
From that first failed supplier to the lessons learned, I’ve shared six German manufacturers worth your attention
But I know that not every project finds its answer in Germany. The six manufacturers we covered are strong, but maybe their timelines, volumes, or pricing don’t match your reality. That’s okay.
We are Vallisco from China, and we help global builders find solutions that feel more adaptable. From custom specs to smaller batch orders, we make the process smoother and easier to manage.
Contact us today to learn more about our offerings!
