How to remove wooden glazing bars from conservatory roof?

[nuzuki]

Hi all,
I've recently bought a house that very old conservatory with wooden glazing bars. I was going to replace them with metal/plastic glazing bars but first I need to figure out how the old ones come off. I've attached a picture. Any ideas?
Also do you think the way the rafters are attached to the wall plate make it ok to get on top of the roof? (with duck board of course)
Thanks
P.s. I know I need to clean my roof

 

[noseall]

You are basically asking how to replace the entire roof because the glazing bars are a huge percentage of it. No point in exploring anything else.

The UPVC/aluminium roofing kits come with a starter, glazing bars, stops, ends, beads etc.

 

[Notch7]

Its weird how the rafters have a big gap where they meet the wall plate. It has been badly built

My guess is, the rafters are screwed downwards onto the wall plate, so the screw heads will be accessed from above. As its a shallow pitch maybe the same at the headplate.

it will probably support your weight if you span a few rafters with a scaffold board

 

[nuzuki]

Thanks for the replies. I was hoping to reuse the panels and just replace the glazing bars. I could just replace the roof beams with new ones also. I'll have a look for screws and go from there