Window modernisation in Riga — new glass unit, energy efficiency, SIA Logu Apkope
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Window modernisation

An old window can become energy-efficient without full replacement. We modernise existing structures — fitting new low-emissivity glass units, upgrading hardware to modern systems and improving insulation. We modernise all types of PVC (plastic), wooden and aluminium windows — VEKA, KBE, Gealan, Salamander, Trocal, REHAU, Wital (PVC), Schüco, Alutech, Reynaers (aluminium) profiles, and Roto, Maco, Siegenia, Winkhaus, GU, Dr. Hahn, G-U BKS, Schüco, Reynaers, Fapim, Sobinco, Fab & Fix, Vorne hardware.

Order this service
Price: from €40

What's included

  • Replacing the glass unit with an energy-efficient one
  • Hardware upgrade with micro-ventilation
  • Replacing the full set of seals
  • Improved thermal insulation
  • Advice on the optimal solution

Modernisation options

Existing windows and doors can be significantly improved without full replacement — here are some of the most popular solutions.

Extra opening in a fixed window section

We add an extra turn mechanism to window sections that were previously fixed — making cleaning easier and improving air exchange in the room.

Tilt (ventilation) hardware

For windows that previously only opened fully, we fit extra tilt-function hardware — convenient ventilation without opening the window wide.

A warmer glass unit

We replace an outdated single-chamber glass unit with a modern double-chamber one — improving insulation and reducing heating costs and street noise.

External lock and handle for a balcony door

We select and fit a lock with a handle on the outside of a balcony door — so the door can now be conveniently opened and locked from the balcony or terrace side too.

Price list by material

Prices vary by window material. Choose your type:

ServicePrice
Glass unit replacement with Low-E (1 window)€60–110
Hardware upgrade (1 window)€40–65
Full modernisation (1 window)€90–160
Modernisation of the whole flatby quote

* PVC windows are well suited to modernisation — the frame is usually kept, and only the glass unit and hardware are replaced.

ServicePrice
Glass unit replacement with Low-E (1 window)€90–150
Hardware upgrade (1 window)€55–85
Full modernisation (1 window)€130–210
Modernisation of the whole flatby quote

* Modernising wooden windows requires a more precise approach, but the result is modern windows with a natural wooden frame.

ServicePrice
Glass unit replacement with Low-E (1 window)€120–190
System upgrade€80–140
Commercial and façade projectsby quote

* Modernising aluminium systems often also includes improving the thermal break.

💡 Free inspection — in Riga only. Outside Riga, transport costs apply.

Frequently asked questions

When is modernisation more cost-effective than fully replacing a window?+
Modernisation is the optimal solution if the frame is still in good condition (no cracks, warping or signs of rot) while the glass unit is outdated or the hardware is worn. It costs 40–60% less than full replacement, with a result comparable to a new window.
What does “Low-E” glass mean and why is it recommended?+
Low-E (low-emissivity) glass has an invisible metallic coating that reflects heat back into the room in winter and blocks overheating in summer. It can cut heating costs by 20–30% and keeps a comfortable temperature year-round with no extra investment.
How long do modernised windows last?+
A new Low-E glass unit lasts 20–25 years. Upgraded hardware lasts 15–20 years with regular lubrication. So modernisation is a long-term investment that pays off through both energy savings and improved comfort.
Does modernisation help reduce noise?+
Yes, significantly. A new glass unit with a larger gap between the panes and a Low-E coating provides better sound insulation. Combined with a new seal and adjustment, the result can be comparable to a soundproof window.
Can modernisation be done in stages?+
Absolutely. Many families start with one room or the coldest windows and then continue. Each window is modernised independently, so there is no need to do everything at once. This lets you spread the cost and assess the result before continuing.
Specialist advice

Specialist advice

Calculate the payback period

Modernisation vs. replacement: how to make the right choice

A simple rule: if your windows are over 20 years old and the frame is damaged or rotten, full replacement is better. If the frame is sound but the windows are cold or fogged, modernisation is the better choice. The average payback period for window modernisation is 2–4 years, taking heating savings into account. Book a free consultation — our specialist will assess the condition and give an accurate recommendation.

Need a window technician?

Leave a request and we will contact you within 12 hours to arrange a free quote.

* Free inspection and quote — in Riga only. Outside Riga, transport costs apply.

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