Replacement Windows Discussion Board Forum

Misspelled the word. It is the grids that go between the glass.

My window installer does not even recommend the Super Spacer (even though it is an option on the brand of window he sells) because he said the U values are not really any better. I went to the website, and found out he was telling the truth. He also mentioned something about the way the mullions sit...

Hi Guys,
Thank you for the excellent information.

It's not worth upgrading my sashes unless the U value shows a sigificant difference. Maybe I will wait until they add heat mirror too.

Thanks very much,


Jack

Hi Mark,
Regular Low E has the coating on the inside of the glass that faces outside. Low E2 has it on the second side of the glass that faces inside the house.

My windows have the regular Low E softcoat. The manufactuerer of my windows just stopped using the regular Low E and is now using the Low E 2. I have 3 bedroom windows that face South so they get a lot heat in the summer. Is the new Low E2 that much better than the old Low E? Is is worth upgrading t...