I wonder if anyone can give me a pointer:
The DG units in our extension are fitted in wood frames; the windows were made new for the extension 20 years ago.
The wood frames have a rubber sealing strip all round the edge: these look to be custom made, fitting snugly round the perimeter of the frame. It's a complex moulded profile, part of which fits into a groove round the frame. These strips compress when the window is closed.
Seems to me that these strips are now degraded: is there a chance I could find replacements, or am I going to have to get "custom-made" ones? But where from? I don't know where to start looking.
Cheers John