Go Back   BuildingHomes.ca - Building your community! > Ontario > Ottawa

Ottawa For those in Ottawa, Kanata, Stittsville, Orleans, Nepean. Mattamy, Minto, Bridlewood, Cardel, Claridge, Braebury, Monarch, Barrhaven, Half Moon Bay, Fairwinds, Findlay Creek, Notting Hill, West Pointe, Stonebridge, Edinburgh Common, Uniform at Orchard-Stonebridge-Barrhaven and more!


Reply
 
Thread Tools Display Modes
  #1  
Old 2019-11-18, 05:17 PM
haivi haivi is offline
Member
Regular User
 
Join Date: Apr 2009
Posts: 84
Default Condensation on windows

Hi guys,

Did anyone notice a crazy amount of condensation on the windows, especially the bathroom windows? I am aware of general condensation in the winter, but it has been brutal this year. I literally had to wipe the water off the windows. The inside humid level is 50% and outside is 70%.

Thanks,
Reply With Quote
  #2  
Old 2019-11-19, 10:15 AM
JCC JCC is offline
Senior Member
Regular User
 
Join Date: Sep 2018
Location: Ottawa
Posts: 238
Default

Is there any moisture on the trim of your windows, or is it just on the glass? Remember that energy efficient homes tend to have greater condensation, and there's been a huge disparity between humidity outside recently.

We haven't had any since like end of October, though.
Reply With Quote
  #3  
Old 2019-11-19, 10:42 AM
haivi haivi is offline
Member
Regular User
 
Join Date: Apr 2009
Posts: 84
Default

We also have moistures on the windows trim. Some windows are worse than other. My master bedroom sits ontop of the garage so it is quite a bit colder than other rooms. This might explain why I see more condensation in the master bathroom than the other rooms.
Reply With Quote
  #4  
Old 2019-11-20, 08:03 AM
Halton Home Inspector Halton Home Inspector is offline
Senior Member
Regular User
 
Join Date: Dec 2008
Location: Milton
Posts: 718
Default

Points -

If you have an HRV then in the winter it will remove humidity from the home.

Hold a tissue to your bathroom exhaust fans to see if they are sucking air from the home.

Leaving your furnace fan in the ON setting will continuously move air around the home = less humidity on the windows.

Removing screens from windows will reduce humidity on the windows and provide easy access to wipe up the moisture with a cloth or paper towels.

If you have a humidifier on your furnace then turn it down.
__________________
For the new home warranty inspection services you need and deserve call Andy Shaw at 905 876 4761
Reply With Quote
  #5  
Old 2019-11-20, 01:37 PM
wri wri is offline
Junior Member
Regular User
 
Join Date: May 2008
Posts: 12
Default

Turn on the HRV if you have and get it running 24/7, which should fix the condensation issue
Reply With Quote
  #6  
Old 2019-11-21, 08:07 AM
Halton Home Inspector Halton Home Inspector is offline
Senior Member
Regular User
 
Join Date: Dec 2008
Location: Milton
Posts: 718
Default

Quote:
Originally Posted by wri View Post
Turn on the HRV if you have and get it running 24/7, which should fix the condensation issue
24/7 in the winter would certainly remove moisture but the furnace would also run much more to keep up with the cool air being brought into the house.

While the HRV does transfer heat from the outgoing air to the incoming cool air it can not transfer 100 percent of the heat. As a result - the cool /cold air is warmed but still cooler than the outgoing air.
__________________
For the new home warranty inspection services you need and deserve call Andy Shaw at 905 876 4761
Reply With Quote
  #7  
Old 2019-11-21, 09:00 AM
HMBTUX HMBTUX is offline
Senior Member
Regular User
 
Join Date: Aug 2014
Location: Ottawa, Ontario
Posts: 289
Default

We had issues with this where it got VERY bad at times. We had a humidifier integrated with furnace and simply followed the "winter" vs "summer" recommended settings to target about 40% relative humidity level for first few years in the house. We finally decided to turn it off (the filters are expensive anyway and are a pain to replace so often haha) and the RH % level settled in the 33 - 36% range. Not a huge difference to me......but the difference in terms of condensation WAS huge. The trade off is a bit dryer air of course.....but I would start by looking at humidifier settings.

p.s. and yes keeping the air circulating also helps.
Reply With Quote
  #8  
Old 2019-11-21, 10:58 PM
haivi haivi is offline
Member
Regular User
 
Join Date: Apr 2009
Posts: 84
Default

I actually did all those. Check the washroom fan, turn on the furnace fan, turn on the HRV, lower the setting of the central humidifier. I think it was due to tight house + big difference in the humid level (50% inside vs 70+% outside). It's been better in the last few days.
Reply With Quote
  #9  
Old 2019-11-22, 08:34 AM
Halton Home Inspector Halton Home Inspector is offline
Senior Member
Regular User
 
Join Date: Dec 2008
Location: Milton
Posts: 718
Default

Maybe your laundry dryer exhaust is not venting properly. You should make sure you know where the vent for the dryer is - turn ON the dryer - and then make sure the flaps all easily open and that the is no screen in the vent.

In some of the new construction homes it is not uncommon that the people laying the bricks or installing the siding actually cover the holes for vents. These missing vents then vent into the structure and yes, the builders supervisors miss this and municipal inspectors don't look for such things.
__________________
For the new home warranty inspection services you need and deserve call Andy Shaw at 905 876 4761
Reply With Quote
  #10  
Old 2019-11-22, 09:15 AM
Kikka Kikka is offline
Member
Regular User
 
Join Date: Jul 2017
Location: Ottawa
Posts: 40
Default

I remember one of the trades who i talked to mentioned that he sprayfoamed the area before installing window installation and he never sees condensation after that. He also mentioned builders usually dont sprayfoam tha area before installing windows. Halton home inspector can confirm if this has any effect on condensation.
Reply With Quote
Reply

Bookmarks

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

Forum Jump