Why Trade Installers Choose Kommerling: The Gold Standard in uPVC Windows
- John Armstrong

- Oct 31
- 2 min read
In the competitive world of trade window supply, reliability, precision, and long-term value matter more than ever. Trade installers across the UK are choosing Kommerling uPVC windows — and for good reason. Engineered with German precision and fabricated in Britain by Armstrong Industries Kommerling systems deliver consistent quality, excellent energy efficiency, and a finish that stands up to demanding domestic and commercial projects.
German Precision, British Expertise
Kommerling has earned its reputation as a global leader in uPVC technology. Every profile is designed with millimetre accuracy to meet strict European performance standards. At Armstrong Industries, we take that precision further — advanced CNC fabrication and quality-assured assembly ensure every frame fits perfectly, first time.
Kommerling engineering heritage + Armstrong British craftsmanship = a product trade installers can rely on.

Built for the Trade — and for the Long Term
Not all uPVC systems are created equal. Kommerling frames are built for installers who value durability and repeatable quality. Multi-chambered design enhances structural integrity while maximising thermal efficiency — helping you meet or exceed UK Building Regulations.
Fully recyclable, lead-free uPVC composition
Excellent weather sealing and acoustic performance
Three 70 mm window sash options for flexibility
PAS 24–ready security configurations
Energy Efficiency That Pays Off
In today’s energy-conscious market, thermal performance isn’t optional — it’s essential. Kommerling windows use modern stabilisers and advanced chamber design to achieve high insulation values, supportingA+ energy rating and compelling whole-life value for your customers.
Designed for Speed, Service, and Support
Armstrong Industries has supported trade installers since 1996. We know your time is money — so our trade-only service is built around speed, consistency, and clear communication.
UK-wide delivery and reliable lead times
Barcode-tracked manufacturing and QC
Dedicated trade account support
Technical guidance and online order processing
Why Trade Installers Stay with Kommerling
Once installers experience the fit and finish of a Kommerling frame, few look back. Structural strength, design flexibility, and colour options make it a go-to system for reducing call-backs and increasing client satisfaction. With Armstrong Industries as your partner, you gain a trusted ally focused on dependable manufacturing and ongoing support.
FAQs
Are Kommerling windows suitable for PAS 24 security specs?
Yes. With the right hardware and glazing configuration, Kommerling frames can be supplied to meet PAS 24 requirements for enhanced security.</p>
Do Kommerling systems achieve A or A+ energy ratings?
Yes. With appropriate glass units and reinforcements, Kommerling uPVC windows can be specified to achieve high energy ratings, supporting compliance with UK regulations.
What lead times can trade installers expect?
Lead times vary by colour and specification, but our trade scheduling is designed for predictable delivery windows. Contact our team for current turnarounds.
Can I get technical datasheets?
Absolutely — we provide technical drawings and spec sheets on request to support accurate surveys and installations.
Kommerling Trade Windows UK | The Gold Standard in uPVC for Installers
Discover why trade installers across the UK choose Kommerling uPVC windows from Armstrong Industries — combining precision fabrication, energy efficiency and reliability.




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