The person behind
your windows.
I'm Kajetan Adamek - people call me Kai. Windows Guy is me: an independent agent based in Wroclaw, Poland, who sources European aluminum, wood, aluminum-clad wood and uPVC windows and doors for US projects and delivers them DDP to the job site. I compare suitable systems for your plans, price them delivered duty paid and stay your single contact through delivery and warranty. No corporate layers. No hand-offs. Just me.
What does Windows Guy do?
I take a US window schedule, compare suitable European systems for it, and run the order from shop drawings through production, shipping and customs to delivery on site. I am not tied to any factory or system brand, so the recommendation follows the project.
- Materials
- Aluminum, wood, aluminum-clad wood and uPVC windows and doors.
- Systems
- Reynaers, Aluprof, Aliplast and Cortizo aluminum systems; Aluplast uPVC; timber lines Timber Classic and Timber Estate; clad lines Clad Flush, Clad Hidden Sash, Clad Passive and Timber Lift & Slide.
- Speed
- Budget estimate the same or next working day. Shop drawings 2-3 working days after the review. The same schedule is often priced on 2-3 systems.
- Delivery
- DDP to your job site - the quote includes freight, customs clearance and duty. Installation by your local team.
- Warranty
- 10-year written warranty issued by Windows Guy sp. z o.o., on all four materials.
- Track record
- Projects in 10+ US states from specification to installation.
- Company
- Windows Guy sp. z o.o., Wroclaw, Poland. US phone +1 (347) 223-2481.
How an order runs step by step is on how it works, and the coverage terms are on the warranty page.
How I got here.
Real Estate Brokerage
First-hand understanding of what drives property value, buyer expectations, and how fenestration choices impact the sale.
European Window Broker
Full-cycle B2B sales at a large European window export platform. Complex, multi-stakeholder US projects - from spec review through production, customs, and job site delivery.
Fenestration Manufacturer
Head of Sales
Built the B2B sales operation from the ground up for a European aluminum fenestration manufacturer. Full ownership of quoting, project management, and delivery across US and EU markets.
Windows Guy
Independent Agent
Manufacturer-neutral. Full accountability. One person from first call to delivery.
Between the plant and your job site.
I am based in Wroclaw, close to the plants that build the windows, and I follow every order through production myself. Then I fly over to walk the projects in the US - the on-site photos and the bifold video on my projects page come from those trips.
Good windows are only half the job. The other half is seeing how they meet American framing, crews and schedules - and fixing the details before they reach your site.
See the projects →Let's work together.
Whether you're an architect specifying European fenestration, a builder pricing a custom project, or a homeowner building something exceptional - I'm one email away.
Or connect with me on LinkedIn.