DBreak

Ok so I tackled this today - wasn't quite as straightforward as I'd hoped!! Ended up using a chisel to prise out the beads in the gap between bead and frame - get it in and bend it slowly then wedge in the scraper above. Had to be patient and do it a few times before it was bent slightly out of shape, and then I could pull it off. Rinse repeat for the other 3. Trying to remove the rubber and then wedge the scraper in between glass and bead ended up cracking the glass and the bead wasn't moving at all! Anyway, new frame in now, had to shave a bit off it to cram it in, a few screws and then the total pita of getting the inside strips in to hold the glass!! Will seal tomorrow. Thanks to all for the advice, extremely helpful!

Going to tackle this on Monday. Just had a look at removing the beading. @craig what's the best method? Seems like removing the rubber and wedging a scraper under might work...! Should I expect them to pop off nicely or am I in for a messy one?

That's a big frame! Glass here is 40mm.

Hi @Russell griffiths - I have the actual new frame sitting in the garage! It's 70mm. Hopefully it will fit

Hmmmm... Have no experience with straps! I'm confident I can screw into the bottom and sides, but there's a concrete lintel above which I don't really want to drill into. Am I good fixing on 3 sides only? And where can I find out about straps! Your help is hugely appreciated!

@craig Very helpful, thank you! Do you know if 70mm is a standard depth for a window frame?

@gaz_moose yep it is a bit of a weird one! Thanks very much for the advice. The new frame measures 70mm deep. Is that standard? It's holding a triple glazed window so I was a little concerned the frame might be deeper than the old one...

Thanks Mab, I'm not sure these windows are the same. The rubber sits outside the frame, and there seems to be a frame within a frame. The inner frame is the one which holds the glass. I'm hoping I can remove the outer frame as it looks like that's the one which allows access to the pane.

Hi guys. I'd like some advice for removing this old aluminium window. I've done a lot of building and diy but never removed a window of this type before. It seems like I'll have more success removing it from the outside but it would be great to have some experienced eyes look at this just in case! I'd also like to know what kind of tools I need. The goal would be to be able to re-fit the window if needs be as I'm not certain the triple glazed replacement is going to go in smoothly, and I might need to rethink the installation (I'll save that for another thread perhaps!!). Many thanks for any help! Dan