uPVC doors and windows are highly durable and resistant to weather extremes. Unlike wooden frames that may warp or rot over time, uPVC maintains its shape and functionality, even in the harshest conditions. Additionally, they are impervious to corrosion, making them a long-lasting investment for any property. Energy Efficiency for Glasgow Homes Energy efficiency is a critical concern in Glasgow, where heating costs can soar during colder months. uPVC doors and windows provide excellent thermal insulation, keeping interiors warm by reducing heat loss. Many uPVC products feature double or triple glazing, which enhances insulation and contributes to lower energy bills.