In article , Davey
writes
Got an external uPVC double glazing unit which has a knackered seal. I'm
going to change it myself but it will be the first time I've done such a
thing. Can anyone offer any tips with regards to releasing the old glazed
unit from the grip of the security tape?

It's double sided foam tape, cut the bond using a sharp but flexible
knife next to the glass.
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fred
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