All Replies on I need to somehow insulate/seal my single pane eyebrow window.

  • Advertise with us
View Ben's profile

I need to somehow insulate/seal my single pane eyebrow window.

by Ben
posted 01-08-2018 07:27 PM

3 replies so far

View John Smith's profile

John Smith

2677 posts in 1013 days

#1 posted 01-08-2018 08:17 PM

Ben, just put some of that shrink wrap plastic window sealer stuff up on the inside just for this winter . . . . . .

then, crawl up there and take measurements (unless you still have the patterns you worked from),
and see if it is possible to cut pieces of glass the same size as existing and caulk them tightly in place
leaving about 1/8 – 1/4” air gap. purchase a can of argon gas and fill the air gap and plug with caulk.
it will be a tremendous pain working up in the air like that, but, unless you take it all down, you have
very few options.
If you can get an airtight seal with the plastic window seal-wrap, you may be able to shoot a can
of argon into the air space and it might work fine. for the price – it outweighs most other options.
I have no idea if argon can migrate through plastic film or not…..... (like helium does in balloons).
- or – can you cut a piece of 1/8” plexiglass to fit snugly within the frame? that would be less noticable.
also – the plexiglass would be soooooo much easier to cut, install and caulk than storm window plastic.
and my latest experience with the storm window plastic – IT SHRINKS !!!! so that would defeat your purpose.
argon is heavier than air….. so whatever method you choose to go with, the bottom must be sealed airtight.
a single pane window has an R-Value of .85, an argon filled double pane window jumps up to 2.7 – 3.6.

do the google search: WHAT IS BLOXYGEN

very nice craftsmanship on the window BTW !!


-- there is no educational alternative to having a front row seat in the School of Hard Knocks. --

View Ben's profile


478 posts in 3708 days

#2 posted 01-08-2018 08:44 PM

Thank you, John!

View patcollins's profile


1687 posts in 3716 days

#3 posted 01-11-2018 01:41 AM

There are two ways to prevent the condensation, either warm up the pane of glass or lower the humidity of the air hitting it.

Sometimes it only takes a small fan set on low blowing on the window to keep the condensation from forming, but this will increase the heat lost out of the window to the outside, but that is better than a rotted window frame from all the condensate on it.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics