Has anyone come across a intastop hinge? It’s a continuous hinge that has been tested to BS 476-20/22 but just wanted to know if it can be used on a door that’s had normal ball bearing hinges installed?

Yes it can but you need to repair the door and frame, back to its factory state, before you install. Make sure the door leaf is solid core, not Tubeboard or panelled.

Thanks Neil for the reply. I tried speaking to the manufacturer and they also claim that the perko powermatic closer can be installed low down in the door which is about 350-450mm from the bottom of the door with this hinge. I’m unable to get any information from the manufacturer as they are getting the product re assessed for the new standard.