# Condensation around windows **URL:** \ **Category:** Interior Inspections\ **Created:** [December 26, 2020, 5:41pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289 "2020-12-26T17:41:50Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![ymartin](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ymartin/32/197413_2.png) [@ymartin](https://forum.nachi.org/u/ymartin)\ **Post date:** [December 26, 2020, 5:41pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/1 "2020-12-26T17:41:50Z")
Attached are some pictures of exactly how much condensation you can see around the window. Visible is also possible microbial growth. It is a double hung double glazed window and condensation is not between the glazing. What can be causing this issue? High humidity levels in the home? Insulation problems? Bad seal? Flashing? I’m only asking about possible causes because it’s at my own place so I would like to fix it. Any help is appreciated. ![image](https://global.discourse-cdn.com/internachi/original/3X/3/6/368a1b68d124bdb3624e778a6e183ece1a1253fd.jpeg) ![image](https://global.discourse-cdn.com/internachi/original/3X/2/e/2ec2303a86251fc5b60148a98328972fbbf6eb3c.jpeg) ![image](https://global.discourse-cdn.com/internachi/original/3X/b/a/bab99255c1fe30252f7f90040accd676abef5b0b.jpeg) ![image](https://global.discourse-cdn.com/internachi/original/3X/e/b/ebc368b04c3ca51695227c85d5ecc067baf7b28b.jpeg) ![image](https://global.discourse-cdn.com/internachi/original/3X/a/1/a1b25c67ea1b2267b9e62273686a55148fe68c8c.jpeg) ---
**Author:** ![jmckee](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jmckee/32/211009_2.png) [@jmckee](https://forum.nachi.org/u/jmckee)\ **Post date:** [December 26, 2020, 5:49pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/2 "2020-12-26T17:49:25Z")
Hi moisture levels in the home can certainly contribute to that. Where are You , what is the weather like ? ---
**Author:** ![ymartin](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ymartin/32/197413_2.png) [@ymartin](https://forum.nachi.org/u/ymartin)\ **Post date:** [December 26, 2020, 5:50pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/3 "2020-12-26T17:50:25Z")
I’m in Florida and usually very hot and humid, but the past couple days we’ve been in the high 30s and 40s. ---
**Author:** ![ptolbert](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ptolbert/32/367118_2.png) [@ptolbert](https://forum.nachi.org/u/ptolbert)\ **Post date:** [December 26, 2020, 5:51pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/4 "2020-12-26T17:51:03Z")
This is a normal occurrence with metal frame windows. The windows have a high “U factor” which means they transfer energy very well (which is not a good thing per se). When it’s cold outside the metal frame gets cold, and presumably it’s warmer inside, so when the warm air comes into contact with the colder glass and frame it results in a release of moisture. Similar to a glass of ice water sweating on a hot summer day. Good luck! ---
**Author:** ![jolson81](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jolson81/32/58542_2.png) [@jolson81](https://forum.nachi.org/u/jolson81)\ **Post date:** [December 26, 2020, 5:53pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/5 "2020-12-26T17:53:11Z")
Do you have curtains n the windows, Is this a bathroom, what is your humidifier setting, to you have exhaust fans in the bathrooms (with timers) do you have a lot of plants, do you have an aquarium? Have you taken the interNACHI course on condensation in your home? ---
**Author:** ![ymartin](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ymartin/32/197413_2.png) [@ymartin](https://forum.nachi.org/u/ymartin)\ **Post date:** [December 26, 2020, 6:02pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/6 "2020-12-26T18:02:37Z")
Thank you @ptolbert that makes perfect sense. Like I said before it’s usually pretty warm in my area but temperature has dropped a lot more than usual the past couple of days. @jolson81 its a bedroom window, there is a bathroom in the bedroom but it does have an exhaust fan, no plants, no aquarium, I have not taken that course but will look it up, thank you 👍🏼 ---
**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\ **Post date:** [December 26, 2020, 6:12pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/7 "2020-12-26T18:12:30Z")
> [@jmckee](#): > > Hi moisture levels in the home can certainly contribute to that. > [@ymartin](#): > > I’m in Florida and usually very hot and humid, but the past couple days we’ve been in the high 30s and 40s That will do it, especially with metal framed window as Patrick notes below. > [@ptolbert](#): > > This is a normal occurrence with metal frame windows. The windows have a high “U factor” which means they transfer energy very well (which is not a good thing per se). > > When it’s cold outside the metal frame gets cold, and presumably it’s warmer inside, so when the warm air comes into contact with the colder glass and frame it results in a release of moisture ---
**Author:** ![mgratton](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mgratton/32/58251_2.png) [@mgratton](https://forum.nachi.org/u/mgratton)\ **Post date:** [December 26, 2020, 6:32pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/8 "2020-12-26T18:32:04Z")
How many marijuana plants have you got growing, just kidding. ![1398](https://global.discourse-cdn.com/internachi/original/3X/6/6/66a210204fd2ffe61ed78ef3e917b85c9fb429f0.jpeg) ---
**Author:** ![mgoldenberg](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mgoldenberg/32/89265_2.png) [@mgoldenberg](https://forum.nachi.org/u/mgoldenberg)\ **Post date:** [December 26, 2020, 6:33pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/9 "2020-12-26T18:33:40Z")
My guess is you had the heat on overnight & found it in the morning. ---
**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\ **Post date:** [December 26, 2020, 6:36pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/10 "2020-12-26T18:36:06Z")
We have double glazed vinyl windows and we have to keep our blinds up a little and down a little to create an air flow. Otherwise we get some condensation on the bottoms of our glass. ---
**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\ **Post date:** [December 26, 2020, 6:36pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/11 "2020-12-26T18:36:56Z")
What is your ‘ **source** ’ of heat? LP? Kerosene? Wood products? ---
**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\ **Post date:** [December 26, 2020, 6:38pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/12 "2020-12-26T18:38:24Z")
> [@jjonas](#): > > What is your ‘ **source** ’ of heat? Mine is NG… ---
**Author:** ![mcyr](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mcyr/32/173319_2.png) [@mcyr](https://forum.nachi.org/u/mcyr)\ **Post date:** [December 26, 2020, 6:44pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/13 "2020-12-26T18:44:33Z")
Couple of links that may help you. > **[How to Get Rid of Condensation in Double Pane Windows](https://housemethod.com/maintenance/how-to-get-rid-of-condensation-in-double-pane-windows/)** > > Condensation in double pane windows signals that a seal has been compromised. Here’s how to address the issue. > **[Window Condensation - Tropical Window Inc. - Glass Care & Maintenance](https://seetropical.com/window-condensation/#content)** > > Causes and remedies for Window Condensation. Frequently asked questions. When is it a problem? Information from PGT Brand Windows. ---
**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\ **Post date:** [December 26, 2020, 6:48pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/14 "2020-12-26T18:48:33Z")
Propane has some water in it and that’t what the use in FL often. I had to leave a couple windows cracked to let moisture out with an open propane fireplace I had in one house. ---
**Author:** ![ymartin](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ymartin/32/197413_2.png) [@ymartin](https://forum.nachi.org/u/ymartin)\ **Post date:** [December 26, 2020, 6:50pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/15 "2020-12-26T18:50:31Z")
> [@jjonas](#): > > What is your ‘ **source** ’ of heat? If that was for me, it’s a heat pump. And we haven’t had the heat on. And thank you @mcyr excellent read that does help. ---
**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\ **Post date:** [December 26, 2020, 7:32pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/16 "2020-12-26T19:32:47Z")
> [@ymartin](#): > > If that was for me, You are the OP that asked the question, are you not? (Not my fault this POS MB likes to override and hide quotes)!! ---
**Author:** ![rmullen2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rmullen2/32/179429_2.png) [@rmullen2](https://forum.nachi.org/u/rmullen2)\ **Post date:** [December 27, 2020, 4:16am UTC](https://forum.nachi.org/t/condensation-around-windows/185289/17 "2020-12-27T04:16:33Z")
It appears that there is some possible mold growth. I guess your relative humidity is above 60%. How old are the windows? I’d look for moisture penetration from the exterior. Keep it as dry as possible and wipe it down with a mixture of Borax and a neutral cleaner. Dick Mullen, Mold Inspector, Boston, Former Fla Resident ---
**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\ **Post date:** [December 27, 2020, 5:10am UTC](https://forum.nachi.org/t/condensation-around-windows/185289/18 "2020-12-27T05:10:46Z")
Welcome back to our forum, Richard!..Enjoy! 😄 We appreciate when knowledgable members share…thank you. ---
**Author:** ![ryoung7](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ryoung7/32/188798_2.png) [@ryoung7](https://forum.nachi.org/u/ryoung7)\ **Post date:** [December 27, 2020, 11:54am UTC](https://forum.nachi.org/t/condensation-around-windows/185289/19 "2020-12-27T11:54:01Z")
> [@jolson81](#): > > Is this a bathroom Tiles on the inner window sill suggests it is. Likely high relative humidity in the bathroom. Turn on the fan and return in 20 minutes. ---
**Author:** ![jolson81](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jolson81/32/58542_2.png) [@jolson81](https://forum.nachi.org/u/jolson81)\ **Post date:** [December 27, 2020, 2:47pm UTC](https://forum.nachi.org/t/condensation-around-windows/185289/20 "2020-12-27T14:47:00Z")
I have noted that the east window in a house will get this type of moisture from cold nights and the early sun. Cool windows, warm sun may cause moisture. [Next page](https://forum.nachi.org/t/condensation-around-windows/185289.md?page=2)