Tag Archives: g-value

What Is a G-Value and Why Does It Matter as Much as a U-Value?

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What Is a G-Value and Why Does It Matter as Much as a U-Value? A g-value, or solar factor, describes the proportion of solar energy admitted through the assessed glazing. A U-value describes thermal transmittance caused by a temperature difference. Both deserve attention because strong insulation alone does not establish how a sunny room will […]