redTECH uPVC Windows in Białystok — a Solid 5-Chamber Base

redTECH at a glance — key specs

redTECH is a solid, durable base for houses and flats where you don't need passive-house parameters but still want a proper, branded window for years. The 5-chamber profile in top-quality uPVC offers a sensible price-to-quality ratio, while the hardware and gaskets raise everyday comfort.

The build depth is 73 mm, and the standard glazing unit has Ug = 1,1 W/m²K. The profile is reinforced with 1,5–2 mm galvanised steel, giving the sash stiffness and stability for years. It's a line that will comfortably handle daily use in the Podlasie climate.

Gaskets, hardware and micro-ventilation

Tightness and comfort come down to details you don't see at first glance. redTECH has two dual-chamber gaskets, heat-welded and flexible at the corners — because they're welded at the corners there are no gaps at the joints, so the window holds heat better and dampens street noise.

The hardware has a RotoSil Nano coating for increased corrosion resistance, is anti-lever and uses 4-wall fixing — making the sash harder to pry and raising security. Tilt-and-turn sashes come with micro-ventilation, which lets you air the room and limit condensation without throwing the window wide open and chilling it down.

Two design variants — redTECH and redARTE

redTECH comes in two design variants: redTECH and redARTE. Both are based on the same 5-chamber 73 mm profile and the same RotoSil Nano-coated hardware — they differ mainly in sash styling, so you can match the window's look to your façade without changing the technical class.

In practice the choice is purely aesthetic: redTECH is a classic, neutral profile, while redARTE offers a bolder sash line. At the free survey we'll show you both and advise which suits your home better.

Who redTECH is for and how to order in Białystok

redTECH is a good choice when you're looking for solid, economical uPVC joinery for a house or flat in Białystok and the surrounding area — durable, tight and secure, but without paying extra for passive-house parameters. It's a sensible long-term standard.

If you want a warmer window with a triple-glazed unit, compare redTECH with the other lines on the uPVC windows page — you'll find the full Uw comparison there. We fit with our own crew, offer instalments and a 5-year warranty, and the survey and written quote cost nothing. Book a free survey and ask for a specific price.

Frequently asked questions