12 June 2026•5 min read•Şehir Pen Engineering
What to Look For When Choosing PVC Windows
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How to Make the Right Choice of PVC Windows
Windows connect our homes and workplaces to the outside world, and they are also among the most critical points for thermal and acoustic insulation. Choosing the right PVC window can save you a significant amount on your energy bills while improving your comfort at home. In this article, we have gathered the most important parameters to consider when installing new windows or replacing old ones.
1. Profile Depth and Number of Chambers Profile depth and the number of chambers are among the most important factors determining the insulation capacity of your window: * **Profile Depth:** Good-quality standard windows should have a profile depth of at least **70 mm**. For villas and prestige projects aiming for higher insulation, profiles with a depth of **80 mm (Pimapen Nirvana / Montana)** or **84 mm (Rehau Eforte)** should be preferred. * **Number of Chambers:** The insulating chambers inside the profile prevent air circulation and create a thermal barrier. **5-chamber or 6-chamber** systems offer the best performance today.
2. Sealing Gaskets (Double and Centre Seal Systems) A window's wind and rain tightness depends on the quality of its gaskets: * **EPDM and TPE Gaskets:** High-quality gaskets retain their flexibility for years. * **Centre Seal System:** In addition to the standard inner and outer gaskets, a third gasket barrier in the middle of the profile (found in systems such as Pimapen Nirvana) increases tightness by up to 40% on high floors with strong wind loads and on façades exposed to heavy rain.
3. The Right Glass Combination (Isıcam Sinerji & Konfor) However good the profile, glass makes up 80% of a window. That is why choosing the right glass combination is essential: * **Isıcam Sinerji:** A double-glazed unit with a heat-control (Low-E) coating. It halves heat loss compared with standard double glazing. * **Isıcam Konfor:** In addition to heat control, it also provides **solar control**. It blocks 40% of solar heat from entering in summer, reducing your air-conditioning costs.
4. Installation Quality (The Most Important Criterion) Even if you choose the best profile and glass in the world, there can be no insulation if the installation is faulty. Filling the gaps between the window and the wall completely with PU foam, applying silicone sealant fully inside and outside, and a perfectly level installation determine the lifespan of your window.
With Şehir Pen's expert installation teams, we work to a zero-defect principle on every job and provide an installation guarantee.