I’ve worked on villas and small hotel projects where bad windows caused big delays. I learned the hard way that choosing the right uPVC windows & doors manufacturer can save a lot of time and stress.
That’s why I put together this list, to help you avoid the mistakes I made.
This review is based on real orders, product checks, and feedback from project owners like you. It’s written to help you make smarter choices.
You’ll see the names of trusted companies, what they offer, how they deliver, and which types of buildings they work best for. Whether you own a resort or manage residential builds, this guide can help you decide.
You don’t want to waste time on trial and error.
So let’s get started!
Quick Comparison Chart
Many window and door buyers ask how top manufacturers differ. This table shows a quick side-by-side comparison to help you decide what fits your project needs best.
| Manufacturer | Product Focus | Pricing Level | MOQ (Approx.) | Bulk Discounts | Lead Time | Best For |
| VEKA AG | uPVC profiles (requires fabricator) | Mid to Premium | 20–50 units | Yes | 2–5 weeks | Builders needing high consistency |
| Internorm | uPVC/Alu, timber windows & doors | Premium | 10–30 units | Yes | 4–8 weeks | High-end homes, hotels, passive projects |
| Vallisco | Aluminium doors & thermally broken windows | Mid-range | 10–30 units | Yes | 3–5 weeks | Projects needing stronger material + style |
| Oknoplast | uPVC windows, patio doors | Mid to Premium | 10–30 units | Yes | 3–6 weeks | B&Bs, villas, hotel renovations |
| Eko‑Okna | PVC, aluminium, steel, wood systems | Mid-range | 10+ units | Yes | 1–3 weeks | Fast turnaround projects |
| REHAU | Engineered uPVC systems | Premium | 10–30 units | Yes | 4–8 weeks | Energy-focused homes, quality builds |
| Aluplast | Slim uPVC systems, surface finishes | Mid-range | 10–30 units | Yes | 4–6 weeks | Projects needing modern slim designs |
| Marvin | Custom wood, fiber‑glass, alu‑clad windows/doors | Premium‑high | ~10–20 units | Yes | 4–10 weeks | Architect-driven, design-heavy high-end projects |
To read more about each brand’s full specs and project fit, check the full reviews listed above.
1. VEKA AG
Headquarters: Sendenhorst, Germany
VEKA has been making uPVC profiles since 1967. They’ve been in the business for over 50 years and have grown into a global supplier. I came across VEKA when working on a villa upgrade in Europe. The builder insisted on using VEKA frames, and now I understand why.
They don’t make ready-to-use windows or doors. Instead, they make the frame systems that local partners use to build the final product. That means you’ll need to work with one of VEKA’s certified fabricators. Still, their product quality and consistency are among the best I’ve seen.
Product Range
VEKA offers a wide selection of profiles. Some of their most used types include:
- Softline 76
- Alphaline 90
- Slide 82
- Swingline
- Roller Shutter Systems
Pricing & Cost Structure
- Pricing level: Mid to premium pricing reflects German-engineered profiles, multiple chambers, and energy-saving features. Higher costs apply for colored or special finishes.
- MOQ: Minimum order quantity often starts at 20–50 units per type, depending on the local fabricator’s policy and project scope.
- Bulk discounts: Larger project orders qualify for discounts. Most fabricators offer stepped pricing based on volume or repeated orders.
- Factors: Pricing is influenced by frame style, thickness, steel reinforcements, glass selection, hardware grade, and labor costs during fabrication.
- Payment terms: Most fabricators require a 30% deposit with the balance paid before shipping or as scheduled in phases.
Lead Times & Production
For most projects, the average lead time is 2–5 weeks once you finalize the design with a local fabricator.
Fabricators order the raw profiles from VEKA, then cut, weld, and assemble your windows or doors locally.
Rush orders can be handled, especially if you’re reordering the same styles. You’ll want to plan around color or glass delays, especially for non-standard options.
Final Verdict
Overall, VEKA is a strong fit if you’re handling a hotel or housing project and want long-term performance. However, keep in mind that you’ll need to work with a local fabricator to complete the process, which may add steps to planning and coordination.
2. Internorm International GmbH
Headquarters: Traun, Upper Austria, Austria
Internorm began in 1931 as a small metal workshop. By 1966 they started their first uPVC window line. Today, they run three full production plants in Austria. These plants make uPVC, uPVC/aluminium, and timber/aluminium windows and doors. They also produce their own insulated glass and accessories. I discovered Internorm while working with architects in Europe. They stood out with consistent quality and a real focus on energy efficiency.
Product Range
Some key products from Internorm include:
- KF 410 uPVC‑Aluminium window
- KF 320 uPVC‑Aluminium window
- KF 510 system
- Lift & Slide Doors (e.g. KS 430)
- Composite timber-aluminium doors and windows
Pricing & Cost Structure
- Pricing level: Premium. The cost reflects in‑house production, triple glazing, and advanced I‑tec features.
- MOQ: Depends on your distribution partner, usually starts around 10–30 units per product type.
- Bulk discounts: Available through certified partners. Larger repeat orders often earn stepped discounts.
- Factors: Pricing depends on material type (uPVC, uPVC-aluminium, timber-aluminium), glazing, hardware, and extras like integrated blinds or ventilation.
- Payment terms: Commonly 30% deposit, with the rest due before goods ship or in phased milestones.
Lead Times & Production
Once your order is approved by the local partner, Internorm provides a production lead time. Typically, this is 4–8 weeks, based on complexity and glazing options.
Internorm handles all extrusion, assembly, and glass in its Austrian plants. Your local partner then manages installation and final delivery.
If you repeat the same design, your partner may offer faster delivery. But delays can arise from custom colours, rare glazing, or transport across borders.
Final Verdict
That said, Internorm works well if you’re planning commercial or villa projects in Southeast Asia or Europe and want top-tier materials and features. However, the drawback is you must work with certified distribution partners and local fabricators, adding extra coordination steps to your process.
3. Vallisco
Headquarters: No. 1926, Cao An Highway, Jiading District, Shanghai, China
I came across Vallisco while sourcing aluminium doors and windows for a hotel owner who needed something stronger than uPVC. What stood out was how fast and clean their production looked, even as a newer name in the industry.
Vallisco focuses on modern and thermally broken systems. They don’t manufacture uPVC, but that’s not a bad thing. If your project requires better structure, sleeker design, or improved thermal performance, their offering fits well.
They are based in China, which helps with pricing and lead time. And despite being a young brand, their attention to precision and service is very clear.
Product Range
- Casement Windows
- Sliding Glass Doors
- Thermally Broken Windows
- Modern Entrance Doors
- Folding & Swing Doors
Pricing & Cost Structure
- Pricing level: Mid-range pricing with premium finish. Offers excellent value for modern designs and better durability than typical uPVC alternatives.
- MOQ: Usually starts from 10–30 units depending on the window or door type and custom specs required for your project.
- Bulk discounts: Volume pricing available. Projects with larger orders qualify for tiered discounts based on quantity and frame type.
- Factors influencing price: Pricing depends on aluminium series, hardware quality, finish type, glazing style, and labor complexity.
- Payment terms: Most orders require a 30% deposit. Balance is paid before shipment once final product photos and QC are confirmed.
Lead Times & Production
Lead times range from 3–5 weeks depending on style and volume. That includes fabrication and final QC.
Most systems are made to order, based on your specs. They keep standard profiles in stock, which helps them move faster than some peers.
Shipping is available worldwide, with extra support for Southeast Asia and Europe. If you’re reordering from a past project, repeat lead times are often shorter.
Final Verdict
Vallisco is a great match for builders who want modern aluminium systems with project-ready flexibility and clean execution. As a newer brand, their challenge is building trust in some regions. But their quality and support make them well worth considering.
4. Oknoplast
Headquarters: Ochmanów (near Kraków), Poland
Oknoplast was started in 1994 in Kraków. They moved to a large industrial site in Ochmanów. I first worked with them when sourcing windows for a European hotel project. Their quality stood out.
They operate six factories in Poland and Spain. The total manufacturing area exceeds 32,000 m². They supply to over 21 countries and run more than 1,450 showrooms.
They work closely with VEKA for high-grade extrusion systems. They have also built their own insulated‑glass line. The team includes over 3,200 employees.
Product Range
They offer several key systems:
- Tilt & Turn Windows
- PIXEL Window system
- HORIZON Patio Doors
- PAVA Window
- Roller Shutters and Blinds
Pricing & Cost Structure
- Pricing level: Mid to premium. Reflects European build, reinforced frames, and thermal glazing.
- MOQ: Usually from 10–30 units per product type through dealer network.
- Bulk discounts: Offered on larger batch orders or repeat contracts.
- Factors influencing price: Glass type, frame profile, hardware level, color finishes, labor in fabricator assembly.
- Payment terms: Often 30% deposit, balance due before shipment or per milestone.
Lead Times & Production
Once your order is confirmed via a dealer, typical delivery time is 3–6 weeks depending on options and design complexity.
The process flows: product selection, order specification, production at factory, shipment to your region, and then final assembly via local partner.
Repeat specs and color orders often go faster. However, custom glass or rare finishes can delay. Shipping logistics to Southeast Asia may add a week.
Final Verdict
Overall, Oknoplast works well if you’re sourcing high‑performance windows for villas, hotels, or B&Bs in Europe or Southeast Asia. However, you do need to deal through local dealers. That adds coordination, and may slow quoting or support at times.
5. Eko‑Okna S.A.
Headquarters: Kornice and Wodzisław Śląski, Poland
Eko‑Okna began in 1998 with a small PVC window plant. Now it is one of Europe’s largest window and door makers. I started working with them when sourcing windows for a resort project. Their scale and speed were impressive.
They use fully automated production lines across multiple plants. They export to around 40 countries and support over 13,000 business partners.
Their team handles PVC, aluminium, wood, and steel frames. They also add shutters, mosquito nets, and garage doors. Their delivery fleet includes nearly 700 trucks. That means you can rely on timely shipments and consistent quality. These features make Eko‑Okna one of the most reliable suppliers I’ve worked with.
Product Range
Key product lines from Eko‑Okna include:
- Synego uPVC Windows
- Eco Slide Patio Doors
- Aluminium and Steel Windows & Doors
- Wooden Windows & Doors
- Roller Shutters and Mosquito Nets
Pricing & Cost Structure
- Pricing level: Mid‑range to competitive. Prices aim to balance quality with affordability.
- MOQ: Often starts at around 10 units per item via distributor network.
- Bulk discounts: Volume orders earn stepped discounts through B2B accounts.
- Factors: Price depends on material, chamber depth, glass type, hardware, finish, and delivered volume.
- Payment terms: Typical terms are 30% deposit, balance due before shipment or on scheduled milestones.
Lead Times & Production
Standard PVC or wooden items are ready in as fast as 7 days for popular colours in the basic palette. This speed makes them ideal when you need quick delivery.
Other common products like aluminium windows and shutters typically ship within 3 weeks. Custom or large steel items may take up to 4 weeks.
Production is automated across multiple halls. Orders are picked, coated, assembled, and loaded onto company trucks. The direct fleet gives you more control over delivery timing and fewer delivery gaps.
Final Verdict
In summary, Eko‑Okna is a smart choice if you want a supplier that delivers quickly, at reasonable cost, across multiple materials. However, the drawback is that you must work through their distributor or trade partner network, direct ordering isn’t available. that may add a step to your procurement process.
6. REHAU
Headquarters: Muri bei Bern, Switzerland & Erlangen, Germany
REHAU started in 1948 as a polymer business. Over decades, it grew into a global uPVC windows & doors manufacturer. Now it serves more than 190 locations and over 20,000 staff.
I first met REHAU when I worked on a high-end villa project. What struck me was their in‑house uPVC mix and extrusion process. They control everything, from design to production.
They offer engineering-backed profiles using RAU‑FIPRO composite material, triple seals, and multi-chamber design. Their systems meet high energy, sound, and security standards.
Product Range
REHAU offers a broad range of high-performance systems:
- Geneo System
- EuroDesign 4500
- TOTAL 70 Flush Fit Window
- Tilt-turn & Lift-slide Doors
- Composite Doors
Pricing & Cost Structure
- Pricing level: Premium pricing. REHAU profiles feature RAU‑FIPRO, triple seals, engineered for energy and durability.
- MOQ: Moderate, depends on certified fabricator and project scale, often from 10–30 units per type.
- Bulk discounts: Available through REHAU-authorised partners, larger volumes or repeat orders qualify.
- Factors influencing price: Material choice, glazing thickness, hardware, colour coating, and add‑ons like ventilation or blinds.
- Payment terms: Typically 30% deposit, with the balance due before dispatch or in installation milestones.
Lead Times & Production
Orders for standard REHAU systems through local fabricators typically take 4–8 weeks from design approval to delivery.
REHAU handles extrusion and material testing in-house. Fabricators cut, assemble, and finish locally. If the design is repeated, production can move faster.
However, rare colours or special glazing can cause delays. Your local partner will coordinate delivery, which may vary with shipping region.
Final Verdict
All things considered, REHAU is ideal if your project needs high-end performance, energy efficiency, and a trusted global system. That said, you must work with certified partners to access their systems, this adds an extra coordination step, though it improves quality and consistency.
7. Aluplast GmbH
Headquarters: Karlsruhe, Germany
Aluplast started in 1982 as a small family company. Today, it has around 1,650 staff and operates more than 20 production and sales sites worldwide. I first learned about them while sourcing profiles for a villa project in Poland. You could see how flexible they are with system types and finishes.
They make PVC window and door systems, roller shutters, and ventilation modules. They offer both modern, narrow profiles and wood- or aluminium-look finishes.
They support over 80 countries. Their close-to-market approach means fast updates on trends. They work with many fabricators. Their global presence gives you access to quality systems no matter where your project is.
Product Range
- Ideal 4000
- Ideal Neo
- Energeto Neo
- Lift & Slide Doors
- Woodec / Aludec finishes
Pricing & Cost Structure
- Pricing level: Mid-range. Competitive but reflects European quality.
- MOQ: Typically starts at around 10–30 units per type via local fabricator.
- Bulk discounts: Project volume or repeat orders bring stepped price reductions.
- Factors influencing price: Profile system, glazing level, hardware, surface finish, fabricator labor.
- Payment terms: Often 30% deposit, with balance before shipping or in stages.
Lead Times & Production
Once you place an order via a certified fabricator, you should expect the lead time to be around 4–6 weeks.
Production is handled at their extrusion plants in Germany or Poland. Then your fabricator cuts and assembles locally.
If you reorder the same spec and colour, turnaround can be quicker. Still, rare finishes or custom glass may cause some delay.
Final Verdict
In short, Aluplast suits you if you need a reliable European uPVC system with fair pricing and design flexibility. That said, you do need to work via a certified fabricator. And while their systems are strong, the indirect process adds extra scheduling steps and planning time.
8. Marvin
Headquarters: Warroad, MN
Marvin is a century-old American company founded in 1912. They make custom wood, fiberglass, and aluminum-clad windows and doors. Each item is built to order.
I saw Marvin products on a high-end villa build in Europe. Their finish and quality stood out compared to mass-produced alternatives. They emphasize craftsmanship and support through certified dealers and project teams.
Their U.S. network helps deliver consistent quality globally. They suit projects that want design flexibility and strong performance.
Product Range
- Marvin Essential (fiberglass)
- Marvin Elevate (fiberglass + wood)
- Marvin Signature Modern (fiberglass/alu-clad)
- Marvin Signature Ultimate (wood + alu-clad)
- Specialty shapes: Bay, Bow, Corner, Awning windows
Pricing & Cost Structure
- Pricing level: Premium‑high. Full customization, high-end materials lead to higher costs than typical uPVC or vinyl
- MOQ: Flexible, but usually project-based minimum—often around 10–20 units per style depending on dealer policies
- Bulk discounts: Available through project contracts; large orders or repeat work often qualify for pricing tiers
- Factors influencing price: Material (fiberglass vs wood), glazing options, custom sizes, hardware grade, and shipping/installation support
- Payment terms: Typically require a deposit (~30%), balance due before delivery—schedules vary by dealer and region
Lead Times & Production
Most Marvin orders take 4–10 weeks, since each unit is made to your exact spec. Their U.S. plants in Minnesota, Oregon, Tennessee, Virginia, and Florida handle production. Then regional dealers assist with logistics and installation.
Repeat orders of the same spec often arrive quicker. Special shapes, custom finishes, or remote delivery locations may extend lead times.
Final Verdict
Marvin is ideal if you need high-end, custom windows or doors with architectural flexibility and premium materials. However, being custom-built can slow delivery and increase cost. You’ll rely on certified dealers, which adds steps to ordering.
Conclusion
Choosing the wrong supplier delayed my villa project and cost more than it should have. That’s why I made this guide, to help you avoid that path.
Each manufacturer listed above brings something different, whether it’s speed, finish, or value. Revisit the full reviews to find the right match for your build.
And if your project needs something stronger than uPVC, like aluminium systems or thermal breaks, Vallisco offers quality that fits well in high-end builds.
Don’t wait until you hit a setback. Contact us today and let’s talk about what you really need.
