"Dirty" appearance in new windows

[goalc]

We have just had all new double glazed windows fitted but have noticed that when the sun is on them there appears to be dirt inside. It looks like a blue-ish haze (so looks like they haven't been cleaned) but we have been told by the company that fitted them that this is actually due to them complying with the new regulations as they have the "E" (?) glass fitted (to reflect heat out in summer and keep warmth in during winter) - they say that the haze effect is the actual glass finish and not dirt in-between the panes.

Does this sound correct ? Has anyone else got this ? We cant believe that they should be like this..

thanks..

 

[nstreet]

Yes it sounds correct, The coatings used often result in a tint to the glass, ours is a very light grey tint and only really visible on the bright sunny days.

 

[goalc]

ah, thanks. Ours is the same - you can only see it when there is direct sunlight on the windows..... great design, eh !

 

[biffvernon]

It's an effect you get with hard coat low-e glass such as Pilkington K
Soft coat low-e is clearer.