Which type of unit is this??

[Jonesy14]

hi please see attached pictures regarding by back bedroom window. This must be 20+ years old. As you can see its INTERNAL beading. NO glazing tape. I need to change the small top opener pane.

Ive remoed the rubber gasket on the outside but unable to get the inner beading out at all. Can anyone advise?

I thought internal beading was used only on more newer windows??
Thanks

 

[Gazman16]

You have the right approach, Some beads are just a are just a tw*t to get out.
Try using 2 scrapers.. One you get the end of the bead out a bit get the 2nd scraper in deeper behind the bead

 

[foxhole]

Looks like you tried to move one end which is tightest spot, start centre of bead bowing it and work to corner.

 

[God]

Looks like a security bead but they are generally glazed from outside.