Manufacturers code on the inside of new triple glazed units?

Senpuria

Hi there,
I've recently just had new triple glazed units fitted in my home, and after they had been fitted I noticed that there's strange blue writing on the inside of each piece of glass. I thought this was quite strange (and an eye sore) so I queried this with the installer.
They are telling me that this is the manufacturers code and it has to be there to comply with building regulations, however this seems very strange to me. I would be very greatful if anyone could give me some advice on what this is and if it should really be there?
I've attached a picture of the writing in one of the units.
Thank you!

mandy47

We had triple glazing installed last year. None of ours have any writing showing. Perhaps regs have changed recently.

EssexExile

mandy47 said:

We had triple glazing installed last year. None of ours have any writing showing. Perhaps regs have changed recently.

Same here.

Senpuria

Thanks for the replies, does it not look very strange?
My thoughts were, even if there's new building regulations, why force this obtrusive text on everyone who has new windows installed?
It almost looks as if there's no spacer coverings inside the units, but I'm no expert.

neilmcl

Is the writing on the glass or on the inside edge of the unit, I can't tell from the pic.

Senpuria

@neilmcl The writing is definitely on the inside edge of the unit, since this is triple glazing, I guess it makes sense for this theory as it's displayed twice since there's 3 panes of glass.
This is where I think the spacer bars should be? My old windows have silver spacer bars where this writing is on my new windows.

Forwandert

We have this on our double glazed windows installed last year but it's in grey so doesnt stand out quite so much as yours. 

[Deleted User]

Hi,

here's a close up:

Carrot007

Forwandert said:

We have this on our double glazed windows installed last year but it's in grey so doesnt stand out quite so much as yours. 

I have it on double glazed units installed over the last 5/6 years. So it is probably a requirement. However mine are indeed also gray and also on the top or bottom where they are less visible also (you could argue the ones on the bottom are upside down I guess!), so probably arequirement but in OP's case badly placed and ridiculously visible. So probably only something you could do something about if you can argue the legs off a donkey. OP did you not see any example units first?

Rodders53

That's printed on the 'spacer bars' between the panes (often filled with dessicant to absorb any residual water vapour).
https://www.glasscraftglass.com/sealed-units/triple-glazing/ seems to be a possible maker of the panes.  https://www.glasscraftglass.com/sealed-units/spacer-bartube/

I've seen some with makers' date marks of DG units in the past but my current (newish) DG panes have none.

https://www.nhbc.co.uk/binaries/content/assets/nhbc/tech-zone/nhbc-standards/tech-guidance/6.7/marking-of-insulating-glass-units-.pdf may be why they're marked that way...  but it may not be necessary for Building Regs / Fensa / other schemes?

ytfcmad

It's there as part of the CE/Kitemarking  process, a legal requirement. As is the toughened glass stamp you will find in the corner of any toughened DGU, again a legal requirement.
A good window fitter would fit the DGU's in an un-obtrusive way if he can.