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 […]
Tag Archives: shading
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How Do You Keep a Bedroom Cool With Big Windows? Keeping a bedroom cool with big windows usually requires a combination of suitable shading, practical ventilation and an appropriate glazing specification. Start by understanding when heat enters and why it remains at bedtime, rather than assuming the glass needs replacing. A bedroom needs more than […]