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AR15.COM
1/23/2008 6:32:40 PM EDT
I have 2 skylights in the Vaulted ceiling in my home.

They are the type of skylights that are above the roof line, they are not flush with the roof.


So the warm air travels up in the skylights and condenses on the windows.

It then drips onto the floor.

I noticed this evening that the water has been dripping down along the corner and it is ruining the textured ceiling.


Would a 3M window film kit help?

Or is that going to just make the problem worse?





1/23/2008 7:03:32 PM EDT
[#1]
Pics added
1/23/2008 7:45:01 PM EDT
[#2]

Would a 3M window film kit help?


Yep. Adding the film will help keep warm, moist air from coming in direct contact with the cold skylight.
1/23/2008 7:53:22 PM EDT
[#3]

Quoted:

Would a 3M window film kit help?


Yep. Adding the film will help keep warm, moist air from coming in direct contact with the cold skylight.


He is in MN.  Ain't gonna do jack squat unless he lowers the dew point of the air to -20 F.  That isn't plain condensation, it is depositation....vapor is depositing as ice instead of just condensing.  Once the ice buildup is sufficient to insulate the conduction, it then melts and drips.

Film insulates a TINY bit for conduction.  It needs a double pane set a few inches below the dome and the space purged with dry argon, then sealed.  Why argon?  Because it is an insulative gas compared to regular air.  And is inert.  Good luck doing that.
1/24/2008 9:08:50 AM EDT
[#4]

Quoted:

Quoted:

Would a 3M window film kit help?


Yep. Adding the film will help keep warm, moist air from coming in direct contact with the cold skylight.


He is in MN.  Ain't gonna do jack squat unless he lowers the dew point of the air to -20 F.  That isn't plain condensation, it is depositation....vapor is depositing as ice instead of just condensing.  Once the ice buildup is sufficient to insulate the conduction, it then melts and drips.

Film insulates a TINY bit for conduction.  It needs a double pane set a few inches below the dome and the space purged with dry argon, then sealed.  Why argon?  Because it is an insulative gas compared to regular air.  And is inert.  Good luck doing that.



The Ice you see is not on the inside that is on the outside.


Put in the 3M kit 15 minutes ago.


I doubled it up.

I put the first film at about the 5" mark and the second at the 9" mark in the 3rd pic.
1/24/2008 10:48:11 AM EDT
[#5]
It's not the conduction that you're trying to reduce with the film, it's the convection.  The film will completely stop the convection from reaching the window.  Of course, there will be smaller convection cells, but they will be far less efficient.

I hope you thoroughly dried off the window before attaching the film?  If there is no moisture to evaporate/condense, then the insulation (and water protection) should be the most effective.  If you did dry off the window, I'll bet money that there won't be any more condensation problems.

1/29/2008 8:12:53 PM EDT
[#6]
For the hell of it, close the shade on it. It MIGHT help insulate the window enough to help it "breath"  and not drip so much. If not, try not to trip over the bucket when you go for a mid night snack! All of my windows are a sheet of ice too! 15-20 below tonight!GOOD LUCK!

Daluded