UPVC double glazed windows can be an ideal upgrade for homes under construction, being specially meant for soundproofing, noise reduction, and weather security. Made of the best quality unplasticized PVC, they hold two special glass panes with the middle being an air or gas cushion acting as an insulation, keeping a comfortable temperature inside throughout the year. From 70% to 75% o... https://shuttersstop.wordpress.com/2025/08/13/boost-energy-efficiency-and-comfort-with-upvc-double-glazed-windows-for-modern-living/