Condensation On Skylights - Roofing/Siding - DIY Home Improvement | DIYChatroom


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 01-14-2010, 03:12 AM   #1
newbie
 
Join Date: Jan 2010
Location: washington
Posts: 2
Rewards Points: 10
Default

condensation on skylights


new forum member here. My question is regarding some condensation on my skylights. First, let me explain that the skylights are located in an awning on the exterior of the house. We added on this new awning and skylights to match an existing awning and skylights leading out over our deck. Since it is all open (haven't finished the underside- just framed out for now) I figure that the temperature on both sides of the skylight are relatively close and cant understand why the condensation. It is a flat glass skylight (not a dome). I live in the Pacific NW and as you may have heard, lots of wet weather up here. Now, I haven't installed the weather stripping yet but can't imagine that it would be the deciding factor. I appreciate any advice you may have for me.

Advertisement

JimNW is offline   Reply With Quote
Old 01-14-2010, 08:17 AM   #2
Remodeling Contractor
 
Join Date: Dec 2008
Location: Sandy Hook, CT
Posts: 3,590
Rewards Points: 2,000
Default

condensation on skylights


Heat rises and is trapped along the joists near the skylight. The glass is colder than this warm air. When moist air hits a colder surface it will condense.

Advertisement

Bob Mariani is offline   Reply With Quote
Old 01-14-2010, 05:22 PM   #3
newbie
 
Join Date: Jan 2010
Location: washington
Posts: 2
Rewards Points: 10
Default

condensation on skylights


Bob, thank you for the reply. I understand the process of condensation, I guess I'm curious as to why the existing skylights don't "sweat" and these new ones do. And how I can combat the condensation. The only difference that I can see, is that the existing skylights have a finished awning. Maybe they are also insulated in that space but I can't see why they would have insulation there. Its on the outside of the home and not over any living space. Would a diagram or pictures be helpful or am I making a mountain out of a mole hill?
JimNW is offline   Reply With Quote
Old 01-15-2010, 08:02 AM   #4
Remodeling Contractor
 
Join Date: Dec 2008
Location: Sandy Hook, CT
Posts: 3,590
Rewards Points: 2,000
Default

condensation on skylights


It could be the new ones are not leaking the moist air to the exterior as the old ones are.
Bob Mariani is offline   Reply With Quote
Old 01-15-2010, 09:27 PM   #5
Member
 
Tom Struble's Avatar
 
Join Date: Dec 2008
Location: west milford n.j.
Posts: 2,785
Rewards Points: 2,000
Default

condensation on skylights


could just be moisture in the new framing material
Tom Struble is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Which Gas Hot Water Heater walds11 Plumbing 66 01-16-2010 08:38 AM
Moisture on windows baum Building & Construction 56 12-22-2009 06:39 PM
Attic fan and skylights on same circuit ok? shadango Electrical 7 06-09-2008 03:50 PM
Sweating windows big daddy-o General DIY Discussions 15 01-06-2008 03:41 PM
Are roof skylights leaking? Halron Roofing/Siding 3 04-15-2007 03:06 PM




Top of Page | View New Posts