Tag Archives metal strips

Keeping the heat in with sash windows

Sash windows are inalienably draughty. A mix of age, the empty boxes and the necessity to slide instead of about all contribute. A solitary glazedsash window London has a U-value somewhere close to the middle sheet U-value of around 5.7 and the entire window U-value of around 4.5W/m2K. As a comparison another new wall structured to ...