Thanks for your comments.
I will have a good clean when I get home and try and retake some better pics, lol.
Yes it was filled with Argon gas, I haven't paid them fully yet, so your input is valued. Thank you
Hi,
I hope someone can help me. I recently had new double glazing installed but I have noticed 3 of the windows has a rainbow discoloration in the windows. It's mainly visible first thing in the morning. I have informed the window company and they said it is "normal as it’s just the gas...