Bloom on outside of windows

[RrogerD]

Any ideas what product to be used to remove the bloom on the outside of out DG windows?
They've been in about 13yrs but thenloom has been present for about the last 8 at least.
They are leaded. I'm thinking it may be some sort of leaching from the lead.

 

[Scally-Ho]

A long standing 'cleaner' for glass as used by car detailers is a liquid metal polish such as Brasso. It has a very fine abrasive suspended in the liquid and will remove any coating that is not the actual glass. A gently but persistent cleaning with that followed by a good wash with clean water will give a good clean finish. Don't be tempted to try T-Cut as it has been known to damage windscreens.

 

[crank39]

If you mean the oxidation from the lead is staining the glass then last week I used some Jif to get rid of some staining on a new build after customer and site team tried everything else, surprised myself actually.

If you actually mean the bluey hue across the entire pane then thats inherent of a Low E coating specifically a hard coat like Pilkington 'K' or Ecologic the Saint Gobain version, its part of the glass and can't be removed, all old school tech now, soft coats are the way forward, practically invisible

 

[RrogerD]

If you mean the oxidation from the lead is staining the glass then last week I used some Jif to get rid of some staining on a new build after customer and site team tried everything else, surprised myself actually.

If you actually mean the bluey hue across the entire pane then thats inherent of a Low E coating specifically a hard coat like Pilkington 'K' or Ecologic the Saint Gobain version, its part of the glass and can't be removed, all old school tech now, soft coats are the way forward, practically invisible

I think it's more the streaks from the lead. I'll try the Jif at you suggest. Fanx.

 

[RrogerD]

Update: the Mrs wasn't too keen on the idea of using Jif as being too abrasive. In the end we've used just normal T-cut and it's come up a treat. Didn't even need much scrubbing, more of a wipe-over tbh and then buff off. Brilliant!
Thanks again everyone for your suggestions.