Frequently Asked Questions

Question 1

What is the difference between uPVC and aluminium windows?

Accepted Answer

uPVC windows offer better thermal insulation (Uf values of 0.9–1.2 W/m²K) and suit residential applications. Aluminium windows have slimmer profiles, higher structural strength, and are preferred for oversized or commercial projects. Engelberg manufactures both systems — the choice depends on the architectural requirements.

Question 2

How long does window installation take in Tashkent?

Accepted Answer

Installing 5–8 windows in a standard apartment takes 1–2 working days. The full cycle from site survey to completed installation is typically 2–3 weeks: measurement (1 day), production (10–14 days), delivery and installation (1–2 days). For larger projects the schedule is agreed individually at quote stage.

Question 3

What U-value should windows have for the Uzbekistan climate?

Accepted Answer

For the Uzbekistan climate (up to +40 °C in summer, down to −15 °C in winter) a Uw value below 1.0 W/m²K is recommended. This significantly reduces energy consumption and prevents condensation. Engelberg's Termo 85 and Termo 98 systems meet this standard and are suited for energy-efficient homes.

Question 4

What warranty do Engelberg windows come with?

Accepted Answer

Engelberg uPVC profiles carry a 10-year warranty, hardware (handles, hinges) 5 years, and the insulating glass unit a 3-year seal warranty. Installation workmanship is covered for 2 years. The warranty is documented in the contract and serviced by our in-house support team.

Question 5

How do you correctly measure a window?

Accepted Answer

1) Measure the opening width at three points (top, middle, bottom) and use the smallest value. 2) Measure the height on the left, centre, and right. 3) Final size is 1 cm less than the smallest reading on each side (installation gap). 4) For an accurate survey, request our specialist — the service is free. This approach yields a perfect fit in 99 % of cases.

Question 6

How many days does replacing old windows with Engelberg windows take?

Accepted Answer

Replacing one window in a room takes 2–4 hours. A standard 3-room apartment (5–6 windows) is finished in a single working day. Removal of the old unit, installation of the new one, sealing, and adjustment are done in one operation. Furniture stays in place — we apply protective covers.

Question 7

Where are Engelberg showrooms located?

Accepted Answer

Engelberg showrooms are located in Tashkent and Samarkand. The Tashkent showroom features Termo 85, Termo 98, aluminium systems, and project samples. For the exact address and opening hours, visit /contacts or call +998 71 200 00 00.

Question 8

What is laminated (triplex) glass and where is it needed?

Accepted Answer

Triplex is a safety glass made of two or three layers bonded with a PVB interlayer. When broken, it does not shatter into shards — making it child-safe. Triplex is required for: ground-floor windows, balcony doors, glass floors and partitions, and commercial buildings where both thermal performance and impact resistance matter.

Question 9

Which window profile systems does Engelberg use?

Accepted Answer

Engelberg manufactures three main systems: Termo 80 (5-chamber, Uf 1.1 W/m²K — residential), Termo 98 (6-chamber, Uf 0.8 W/m²K — passive-house standard), and the BKH 65 aluminium series (thermally broken, slim-frame). All systems conform to DIN EN 14351 and carry the RAL quality mark.

Question 10

Are there special terms for B2B clients and architects?

Accepted Answer

Yes, Engelberg offers a B2B programme for developers, architects, and distributors: volume discounts, access to CAD/BIM libraries, project consultation, and a dedicated account manager. Partnership requests can be submitted via /contacts or directly to our sales team.

Frequently Asked Questions

Answers to common questions about our windows and doors.

Find the right solution for your project

Frequently Asked Questions

Answers to common questions about our windows and doors.

Find the right solution for your project