Any point in upgrading glass in existing window frames?

[aveatry]

Great advice thanks - I’m not sure how thick my existing panes are but I reckon 22mm… won’t know until I take one out and measure.

Regarding cost I have seen this with what I was charged to have a couple of panes replaced with acoustic glass, I don’t think it would have been cheaper to buy and fit myself than to have a tradie supply and fit for me. I’ll need to do a bit more research.

At a minimum I’m replacing most handles as these are very worn, and gaskets. I took a sample gasket off today, I’m assuming by how flat it is that this is at end-of-life?

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I forgot about those ones - I was referring to the main ones that hold in the glass. Yes some of those will also need replacing too. Again do the ebay sample set thing