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If it's smooth glass I would use a scraper to cut it off the glass and remove and last bits of residue with a wipe (alcohol or wonder wipes). The scrapers of this style are my preference :-
As others have said, you need to be careful and cut between paint and tape to retain the edge of the paint. If it's exterior and properly taped it should have a 1 - 2mm gap between the woodwork and tape which is painted as this helps the paint to protect the woodwork.
I don't carry or use a hairdrier in my tools so I can't say if that works better.
Airhead-
Thanks, I wish I’d known that about the gap!
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A hairdryer achieved nothing, the tape was well past the point where it might have worked!
I sliced the join, peeled off what I could (the painted bit of the tape came off ok) and used my Bahco carbide scraper to take off the rest. Messy and I will need to touch up the edges as white primer is clearly visible!
Dramatic_Hammer
Any tips for removing masking tape that’s been left on too long? The tape on my front door glass is now under several coats of primer and paint and the adhesive has gone hard!
I’ve seen people recommending hairdryers…