(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 13 of 13

Thread: Condensation on new replacement windows, Why?

Hybrid View

  1. #1

    Default Condensation on new replacement windows, Why?

    Hi folks,

    Single gal homeowner here wondering why my new replacement windows have condensation inside them. I live in the New England area and have noticed that my new replacement windows in some rooms have water inside them near the bottom of the window. The brand name escapes me right now. Here are some facts below about the windows and there location in the home:

    - 1st they are single pane windows. (not sure if this has any relevance)
    - the windows that have the most condensation are in the bedroom facing the north side of the house and this particular bedroom is situated on top of my garage. (note: this room is the coldest room in the house)
    - other window is in the front on the house, north side, situated next to front door.
    - note: windows facing the south and east end of the home getting the most sun are fine (no condensation).

    Any thoughts would be appreciated......and thanks for reading my post.

  2. #2
    Plumber jimbo's Avatar
    Join Date
    Aug 2004
    Location
    San Diego
    Posts
    9,001

    Default

    Quote Originally Posted by eastinway View Post
    Hi folks,


    - 1st they are single pane windows. (not sure if this has any relevance)!!!!! ( Italics mine). Most places it is not even legal to install single pane windows anymore!!!
    - the windows that have the most condensation are in the bedroom facing the north side of the house and this particular bedroom is situated on top of my garage. (note: this room is the coldest room in the house)
    - other window is in the front on the house, north side, situated next to front door.
    - note: windows facing the south and east end of the home getting the most sun are fine (no condensation).

    Any thoughts would be appreciated......and thanks for reading my post.
    Single pane windows get cold. Warm moist air from inside the house hits that and you get condensation. The type of heating system you have can be relevant, as is the number of hot steamy showers, amount of cooking, number of people, etc.

    The cold single pane windows are the problem, but if too-high humidity is a problem , then a DE-humidifier may be called for. Many areas of the country need HUMIDIFIERS in the winter, so you would have to investigate.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,381

    Default

    Don't confuse a single assembly of multiple panes of glass as a single pane window. If you in fact really have single pane, it isn't unusual at all to get condensation without a storm window to help keep the inner surface warm.

    If the condensation is INSIDE of the window (i.e., between the two external layers), the window has failed, find your purchase info, receipts, etc., as if they are new, most places have at least a few years, and 10 or more isn't uncommon for the insulating glass assembly. If it is truely on the room side, and not inside, even if it is an insulated glass assembly, it will be colder than the wall, and if the humidity is high enough and the dew point of the glass is such that you get condensation, it will happen. As Jimbo mentioned, most places need to add humidity in the winter and with modern insulated glass panels, condensation isn't all that common except in more extreme conditions (either really cold outside or high humidity inside).
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4

    Default

    Are you running any ventless gas heaters?
    http://www.inspectpa.com/forum/forum.php
    My answers are based mostly on the ICC codes. Advice given is my personal opinion and every person performing work should acquire a permit from his/her jurisdiction and get the work inspected. My opinions are not directions to follow for DIYs or professionals

  5. #5
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,605

    Default windows

    The main question is WHY anyone would go to the expense of replacing windows and use single pane ones? They are always inefficient, both Summer and Winter, and condensation is just a symptom of their inefficiency.

  6. #6

    Default

    Ok folks thanks for your replies.....being a single, female homeowner, I was very confused about purchasing replacement windows. I asked around about how to purchase them and I did spend a lot of money replacing the original windows but there is an overload of information on replacement windows. The single pane window is less expensive which is what I had to consider. Last night I checked the windows in question and I wiped a lot of moisture from the outside of the windows, but it does appear both on the outside and inside of the windows. Thanks Jimbo, Jar546 and HJ. Oh, by the way my heating system is gas, forced hot air if that matters. Man, now I wish I spent the extra money on the triple pane.....the single pane windows are very cold.

    Oh well.

  7. #7

    Default Now I'm really confused about my replacement windows.

    JadN, you wrote,

    "Don't confuse a single assembly of multiple panes of glass as a single pane window. If you in fact really have single pane, it isn't unusual at all to get condensation without a storm window to help keep the inner surface warm. "

    I am going to check my papers on the windows I purchased...I am confused and will get back to everyone.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •