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Overheating has become an increasing consideration in modern residential developments and refurbishment projects.Concerns about overheating have grown, coinciding with the rise in popularity of open-plan living and larger glazed areas. Poorly specified glazing systems can contribute to uncomfortable indoor environments during warmer periods. When specifying aluminium window systems, it’s important to consider how they balance natural light, thermal efficiency, ventilation and modern aesthetics. Not all systems achieve the right balance. Modern window systems are increasingly expected to deliver across all of these areas. What Causes Overheating in HomesOverheating is most often linked to excessive solar gain, poor airflow and inefficient older glazing systems. Other contributing factors include large glazed areas, open-plan layouts and limited ventilation.Modern developments are increasingly facing the challenge of balancing natural light and indoor comfort, prompting specifiers and developers to search for reliable glazing systems that deliver on both. The Role of Glazing and Frame MaterialsBoth the glazing specification and frame design are crucial to a window's performance. Modern aluminium systems like the Smart Alitherm 400 feature slim sightlines and large glazed areas, providing contemporary aestheticsalongside excellent thermal efficiency. Low-E glazing options are available – they help reduce excess solar gain during warmer months while supporting thermal performance.Aluminium systems remain popular across residential developments, refurbishments and replacement projects for the balance they strike between thermal performance and contemporary aesthetics.