The light glass at the top of my double glazed UPVC door is broken on one side. How to I replace one piece of a double glazed glass? and how do I take the measurement?

majocharming, December 2009

you cannot replace one pane if its a sealed unit.A upvc frame normally contains sealed units which consist of 2 layers of glass joined together around the edges with an aluminium spacer which keeps the panes apart with an air gap inbetween.Measurements can be taken from the old unit once its removed

MarkAspen, December 2009