The room as wooden floors and masking tape was put down more than 2 years ago by previous owner to varnish the skirting boards. We never took it up. I tried to remove it a few days ago but it doent come up. It is like tearing a price sticker off something and it leaves the backing/sticky part still attached. Its all around the border of the room. I have tried soaking it with hot water and also nail varnish remover (!) and no joy.
Use a plastic or wooden spatula to lift a corner of the tape, then use the hair dryer, directing the heat under the tape as you pull. Use white spirit on a non-fluffy rag to deal with any residue on the floor borads. Test a a corner first.
Thanks for the suggestions, we have white spirits so I'll try it.
Already tried the blade thing. The glue has almost become one with the floor and a blade doesnt lift it, I can carefully scrape tiny stands off but even that takes ages and I have already scratched the floor
I've used olive oil to remove stickers, masking tape etc. from windows with great success. Might be less harsh on your wooden floor than white spirits.