
Why Do Window Problems Appear in New Construction Apartments?
New-build residents are surprised when balcony doors start sticking after just a few years. Window problems in new apartments are not as rare as they seem.
Find out why cold air comes through plastic windows, how to restore the seal, and when professional window sealing or gasket replacement is needed.

Cold air coming through plastic windows is usually the first sign that they have lost their seal. Most people only notice the problem when temperatures drop and a draught appears near the windows, home comfort decreases, or heating costs start to rise.
The problem is most commonly related to worn gaskets, reduced window compression, or long-overdue window maintenance. Timely window sealing or repair helps reduce heat loss and avoids more extensive repair work in the future.
Even high-quality plastic windows wear over time. Temperature fluctuations, humidity, sunlight, and constant opening and closing gradually affect window fittings and gaskets. As a result, the window compression becomes less effective than before and cold air begins to enter.
The most common causes of reduced sealing are worn window gaskets, reduced compression, or an unevenly pressing sash. In some cases, the problem arises from long-overdue adjustment or natural fitting wear.
The first signs of reduced sealing usually appear gradually, so many people don't notice them immediately. The problem typically becomes apparent when temperatures drop or the heating season begins.
It is worth contacting professional technicians if you feel a draught near the windows, cold air is coming through, the glass is steaming up, or moisture is accumulating. Another common sign prompting people to seek window sealing in Klaipėda is higher heating bills or increased outside noise.
In these cases, professional plastic window sealing or gasket replacement is usually required.
Not always. Sometimes the problem arises from reduced window compression or misaligned fittings. However, if the gaskets have hardened, cracked, or lost their elasticity, adjustment alone is usually no longer sufficient.
Professional technicians first assess the condition of the gaskets, the operation of the fittings, the window compression, and the overall seal. Only after diagnosis is it possible to determine accurately whether adjustment is needed or whether window sealing and gasket replacement are already necessary.
One of the most effective ways to reduce heat loss is timely plastic window sealing. In some cases, additional internal window sealing is carried out to reduce draughts and improve the overall seal indoors. Properly maintained and well-sealed windows reduce draughts, improve home comfort, and allow a more stable temperature to be maintained indoors.
Well-sealed windows also help reduce moisture accumulation and protect fittings from faster wear. In most cases, professional sealing costs considerably less than a later larger repair or new window installation.
Although people sometimes try to carry out minor adjustment work themselves, incorrect fitting adjustment can further reduce the seal or damage the mechanisms.
Professional window technicians can accurately identify the cause of the problem and select the most suitable solution for the specific window system. In most cases, professional adjustment, gasket replacement, or additional window sealing is sufficient to restore the seal and smooth operation.
If cold air is coming through your plastic windows or the seal has deteriorated – book professional window sealing across Lithuania.

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We serve Vilnius, Kaunas, Klaipėda, Panevėžys, Šiauliai and all of Lithuania
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Up to 5 years
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We repair plastic and wooden windows and balcony doors throughout Lithuania. Aluminium window repair services are available in Vilnius and Kaunas.
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"Great communication and transparent pricing. The quality of work was excellent. Very happy with the result."
"The team was punctual, polite, and very knowledgeable. They explained the issue clearly and fixed it efficiently."
"Fantastic service from start to finish. I will definitely use them again for any future window or door repairs."
The advantages of working with our team of professionals

No-cost initial assessment to identify the problem.

We provide up to a 5-year warranty.

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99% of repairs can be completed during the first visit.

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We work with all types of window and door profiles and manufacturers.

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Expert professionals with years of experience
Senior Technician & Team Lead
Coordinates the team and ensures the highest quality of service
Technician-Specialist
Ensures your windows and balcony doors operate smoothly
Technician-Specialist
Ensures your windows and balcony doors operate smoothly
Technician-Specialist
Ensures your windows and balcony doors operate smoothly
Technician-Specialist
Ensures your windows and balcony doors operate smoothly
Technician-Specialist
Ensures your windows and balcony doors operate smoothly
Technician-Specialist
Ensures your windows and balcony doors operate smoothly
Technician-Specialist
Ensures your windows and balcony doors operate smoothly
See the quality of our work through real transformations
Replacement of selective double and triple glazing units to improve energy efficiency or remedy glass breakage
Complete mechanism renewal with modern hardware
Sealing the gaps between the window sill and the window frame to reduce heat loss and air leakage
Complete mechanism replacement with modern multi-point locking system
Replacement of old seals with polyurethane foam that remains stable and does not react to temperature changes, whether in winter or summer.
Replacement of worn hinges and adjustment of window and door hardware to ensure smooth operation and a tight seal.
We work in all major cities, their districts and surrounding towns
We provide window repair services across Lithuania – working in all major cities, their districts and surrounding towns. We perform plastic window repair, window fixing, window adjustment, window sealing and gasket replacement, ensuring tightness and long-lasting results.
👉 In about 99% of cases we solve the problem on the first visit, and the technician's call-out and full window diagnostics are free of charge.
We perform window repair in Vilnius throughout the city and Vilnius district – in Antakalnis, Fabijoniškės, Pašilaičiai, Pilaitė, the city centre and other Vilnius districts as well as surrounding towns. We solve sealing, adjustment and mechanical issues, carry out plastic window repair and glass unit replacement. We also provide window adjustment and window sealing.
👉 Most often we handle everything on the first visit, and the call-out and window inspection cost you nothing.
We perform window repair in Kaunas and Kaunas district – working in Šilainiai, Dainava, Eiguliai, Žaliakalnis, the city centre and other districts as well as surrounding towns. We fix leaking, stuck or misaligned windows, carry out plastic window repair and gasket replacement. We also provide window adjustment.
👉 In about 99% of cases we solve the problem on the first visit, and the technician's call-out is free of charge.
In Klaipėda we perform window repair throughout the city and Klaipėda district – both in the city itself and in Gargždai and other surrounding towns. Due to the coastal climate, window sealing and window adjustment are often needed, so we help restore window tightness, eliminate drafts and improve home comfort.
👉 We come out free of charge, assess the situation on site and most often solve the problem right away.
We provide window repair services in Šiauliai and Šiauliai district – working in Dainiai, Gytariai, Lieporiai, the city centre and other districts as well as surrounding towns. We carry out plastic window repair, window adjustment and window sealing, quickly resolving both minor and more complex faults.
👉 Most often we handle everything on the first visit, and the call-out and diagnostics are free of charge.
In Panevėžys we perform window repair throughout the city and Panevėžys district – working in Kniaudiškės, Rožynas, Pilėnai, the city centre and other districts as well as surrounding towns. We carry out plastic window repair, window adjustment and gasket replacement, ensuring quality and long-lasting results.
👉 We come out free of charge and most often solve the problem on the first visit.
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