I recently replaced a dual-pane panel with a dual-pane panel that has a
Low-E coating on surface #3 (which is the side facing outward on the
innermost pane). The window faces the south, and I notice that when the
sun shines through, it causes the inner pane to warm up VERY NOTICEABLY to
the touch in comparison to an adjacent non-Low-E coated window. In other
words, the inner panel feels warm to the touch in comparison to the inner
sufface the windw immediately next to it (which has a non-low-E panel).

So I'm wondering 2 things:

1) Will the added stress of this extra heat cause the panel's seal to wear
out quicker relative to non-Low-E panels?

and

2) If a Low E coating on surface number 3 is causing the inner pane itself
to noticeably heat up when sun shines through (relative to a non-low-e
window), does this mean the coating is actually working as it should, or
does this indicate that it's absorbing too much energy instead of reflecting
it?

Thanks,

J.

jaynews wrote:
I recently replaced a dual-pane panel with a dual-pane panel that has
a Low-E coating on surface #3 (which is the side facing outward on the
innermost pane). The window faces the south, and I notice that
when the sun shines through, it causes the inner pane to warm up VERY
NOTICEABLY to the touch in comparison to an adjacent non-Low-E coated
window. In other words, the inner panel feels warm to the touch in
comparison to the inner sufface the windw immediately next to it
(which has a non-low-E panel).
So I'm wondering 2 things:

1) Will the added stress of this extra heat cause the panel's seal to
wear out quicker relative to non-Low-E panels?

and

2) If a Low E coating on surface number 3 is causing the inner pane
itself to noticeably heat up when sun shines through (relative to a
non-low-e window), does this mean the coating is actually working as
it should, or does this indicate that it's absorbing too much energy
instead of reflecting it?

Thanks,

J.

I would say not. Now I would suggest that different makes of glass and
different weather conditions and different installations can cause
differences. I am happy to say that I have lived in my current home about
15 year and in my past home about the same time. My past home had non-low e
and the seals broke on two windows. My current home has low e and a better
line of windows and no broken seals. (other than the small on that was
broken by someone's BB gun.

--
Joseph Meehan

Dia duit