Why a Strong Technical & Quality Team Matters in Trade Windows and Doors Supply

In any manufacturing business, the people behind the scenes matter just as much as the products themselves. At Listers’ Stoke factory, that principle couldn’t be clearer. As a reliable supplier of trade windows and doors, our Technical & Quality Department is anchored by two remarkable professionals: Stephen Hancock and Andy Folkes. Their expertise, dedication, and long-standing experience make them invaluable not only to our operations but also to installers who rely on high-quality uPVC windows, aluminium windows and doors, and patio doors with short lead times.

Trade installers need more than products that meet the specification. They need answers, accurate, practical, and timely. Whether installing windows, patio doors, or aluminium systems, tade installers need a team that understands both standards and real-world challenges, from site visits to compliance audits.

That’s where Andy and Stephen come in.

With decades of experience between them, they provide reassurance that comes only from deep industry knowledge. When an installer calls with a question about uPVC windows, PVC fabrication, aluminium windows and doors, or patio door systems, they speak to experts who understand the urgency of projects, especially when quick availability and short lead times matter.

Andy has been with Listers since 1996. Over the years, he’s worked in every corner of production: from fabricator to foreman, supervisor, and finally Technical & Quality Manager. That journey gives him a perspective few can match – he understands our trade windows and doors inside out and knows how every decision impacts the installer and the end customer.

Today, Andy leads the team in:

His guidance doesn’t just keep operations running; it reinforces our reputation as a reliable trade supplier with consistent quality and availability.

Stephen joined Listers in 2021, bringing over 30 years of uPVC and aluminium windows and doors quality assurance experience. His career has covered every aspect of QA: inspection, tooling approval, compliance, audits, and site support.

At Stoke, Stephen ensures that:

For installers sourcing trade patio doors, uPVC windows, or aluminium doors, Stephen’s role provides complete confidence: quality isn’t just promised – it’s delivered.

Separately, Andy and Stephen are formidable. Together, they form the backbone of Stoke’s Technical & Quality Department, supporting our position as a trusted trade windows and doors supplier.

They provide:

Their combined experience ensures that installers always have a reliable partner for trade windows, doors, and patio door systems, with the support needed to deliver projects on time.

A Note to Trade Installers Looking for a Reliable Windows & Doors Supplier

As a trade professional, you know better than anyone what matters from a manufacturer: quality windows and doors, short lead times, quick availability, and dependable support.

At Stoke, our Technical & Quality Department is here to deliver exactly that – whether you’re working with trade uPVC windows, aluminium windows and doors, or patio doors.

But we also want to hear from you.

What kind of support do you value most? Are there new challenges around lead times, product availability, or installation? What would make our team even more effective for your projects?

Drop us an email or get in touch – your feedback helps us continue to improve as a leading supplier of trade windows and doors in the UK, delivering both quality and speed where it matters most.