Dimensional and structural limitations of large PVC windows

30+ years of manufacturing experience with custom-made PVC and aluminium solutions

Large PVC windows have their technical limits. In some cases they make sense; in others, it is more appropriate to consider aluminium.

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For years, we have also been manufacturing for demanding projects in the USA

We have been manufacturing windows and doors from the SCHÜCO system for more than 30 years. For over 20 of those years, we have been exporting windows to the USA, where they become part of projects we are rightly proud of. We focus on architecturally interesting projects and do not shy away from atypical solutions. We manufacture with an eye for detail. View a selection of our projects – not only those in the USA.

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They rely on us in the USA – you can rely on us too

We produce custom-made products because we understand the individual needs of our customers.

“We have been working with the people at ALUPLAST s.r.o. for more than 20 years. As a supplier, they are among our most reliable partners. We entrust them with demanding projects that require good communication and solving complex technical issues. We know that ALUPLAST can focus on critical details.”

European Architectural Supply, LLC
partner in the USA

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Nikola Richterová
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S oknami od ALUPLASTU sme nadmieru spokojní. Od zadania požiadavky až po montáž prebehlo všetko bez problémov. Vynikajúca komunikácia a krásne, kvalitné okná. Ďakujeme 😊
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Okná robím 19-20 rokov ,väčšinou keď prídem niekam do výroby nejaký skladník mi povie že okná sú tam opreté a na nich sú opreté nejaké ďalšie ktoré si musím ja preložiť ,oni nemajú čas. Dnes som tu bol pre okná hned nás obkľúčili traja chlapi ,okná nám naložili,zapaskovali ,klobúk dolu vynikajúci prístup len tak ďalej 👍
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Spoločnosť vyrábajúca okenné a dverové výplne, materiál plast a hliník. Kovanie Schüco máme na oknách už minimálne dve desaťročia a zatiaľ, až na jedno okno mechanická funkčnosť v pohode.
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Super ok!👌 În special personalul,oameni de aur.
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Recenziu píšem po 9 rokoch od inštalácie. 100% spokojnosť 👍 okná fungujú ako nové. Mal som problém ktorý ako s odstupom času viem nebol na strane výrobcu aj tak ho vyriešili k plnej spokojnosti myslím že až nadštandardne
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Oceňujem vysokú kvalitu dodaných okien a odporúčam

Number of orders since 2010

1 700

United States of America
approx. €16 million

10 000

Slovak Republic
approx. €74 million

Even in PVC, it is possible to design larger glazed areas. However, the structural limits of PVC must be respected.

WE SHARE OUR EXPERIENCE

Why large PVC windows have dimensional limitations

Plastic (PVC) is a good material for standard window sizes. With large formats, however, the physical properties of the material come into play and cannot be bypassed:

    • greater PVC expansion with temperature changes
    • lower dimensional stability at large sizes
    • increasing weight of the glass and sashes

These factors determine how far it is reasonable to go with a PVC window.

What are the maximum dimensions of large PVC windows

For PVC windows, we work with the following indicative limits:

    • maximum length of the longer side (for a laminated profile): approx. 2.6–3.0 m
    • maximum area of one element (for a laminated profile): up to 6 m²
    • maximum glass weight (for fixed glazing): approx. 250 kg

We will be pleased to consult a specific solution with you.

We will be pleased to consult a specific solution with you

Large glazed areas – more dividing profiles

With larger elements, a PVC solution is implemented using dividing profiles.

    • This has consequences:
    • the visual cleanliness of the glazing is reduced
    • in some projects this is acceptable
    • in others it is already distracting or architecturally unsuitable

At the same time, with a large number of dividing profiles, the price difference between PVC and aluminium may decrease.

Truly large glazed areas without compromises? Aluminium is the better solution

If your goal is the largest possible glazed area with a minimum of dividing elements, aluminium is technically a more suitable material than PVC. It allows larger dimensions, slimmer frames, and stability even in demanding architectural solutions.

Therefore, for projects with large glazed areas, we often recommend considering large-format aluminium windows, which offer greater design freedom as well as long-term functionality.

View large-format aluminium windows

ACCESSORIES AND ADD-ONS

We can supply together with the windows

WHY WE DO NOT HAVE A PRICE LIST

Large PVC windows – price and what affects it

Find out the price of your aluminium windows

WITH REGARD TO WHAT YOU NEED

30+ years of experience with made-to-measure windows and doors. We share it with you.

We provide fair and clear advice

We know that choosing windows and doors is not just a technical decision. It is part of a major investment, an important life step, and often also doubts about whether you are deciding correctly.

For more than 30 years, we have been dealing daily with various projects, questions, and concerns from our customers. We listen, explain, compare options, and look for a solution that makes sense specifically for you – technically, aesthetically, and on a human level. We consider fair advice to be just as important as a quality product.

Book a consultation and let us go through your project together
– calmly, clearly, and without pressure.

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For more than 30 years, we have been dealing daily with various projects, questions, and concerns from our customers. We strive to find solutions that make sense specifically for you – technically, aesthetically, and on a human level.

FAQ - large PVC windows

Are large PVC windows possible?

Yes, but only up to certain dimensions and with technical limitations.

Due to thermal expansion, structural requirements, and the load-bearing capacity of PVC profiles.

It depends on the dimensions. Beyond certain sizes, the weight of the glass, the length of the profiles, or the area of the element becomes so large that dividing profiles are necessary.

In most cases, yes – it allows larger dimensions and a cleaner design (slimmer profiles).

Do you have further questions? Contact us

ALUPLAST s.r.o. – Windows with a world view. Done right since 1993