Put it this way, it's in a conservation area but all three other properties in the row (including the directly attached property) have had their timber windows replaced with uPVC and not in a similar style to the original windows.
I am not interested in uPVC windows so my original question...
I want to install double glazing to my single glazed timber sash and case windows.
I realize that is possible to do this by simply adding a new sash with a double glazed unit, however my question is:
Is it possible to install double glazed units of glass in between the existing muntins?
My...