How to Stop Condensation on a Single-Pane Window

Written by kimberly johnson
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How to Stop Condensation on a Single-Pane Window
Excess condensation causes mould development. (Jupiterimages/Brand X Pictures/Getty Images)

Condensation that forms on the inside of single-pane windows occurs most often in the winter when the indoor temperature is drastically warmer than the outdoor temperature. Single-pane windows develop condensation more than double-pane windows, because double panes are filled with a gas that regulates the temperature better. To stop condensation from forming in your single-pane windows, you must remove as much moisture as possible from the interior air in your home.

Skill level:
Easy

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Things you need

  • Dehumidifier
  • Putty knife
  • White or clear caulk
  • Caulk smoothing tool

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Instructions

  1. 1

    Turn on bathroom and kitchen exhaust fans after taking a shower or bath, and after cooking, washing the dishes or running the dishwasher. Leave the fans on for a minimum of 10 to 15 minutes to remove the excess moisture which contributes to condensation build-up.

  2. 2

    Plug in a dehumidifier and place it in the room where the majority of condensation problems occurs. Turn the unit on and run it for one to two hours per day. Increase the amount of time it runs per day until no condensation forms on the windows. Empty the collected water from the dehumidifier tank at least once per day.

  3. 3

    Open all curtains and blinds in the morning as soon as the sun rises to help remove moisture and dry out the interior air.

  4. 4

    Examine the inside and outside edges of the window frame carefully to identify areas of cracked or peeling caulk. These areas can allow cold air in which creates condensation inside the window. Scrape off any damaged caulk with a putty knife and apply a thin bead of white or clear caulk over the area and smooth it with a caulk smoothing tool.

Tips and warnings

  • The ideal amount of moisture for interior air is 30 to 40 per cent in the winter.
  • According to the CBS News, some condensation problems are the result of a clogged chimney. If all of the above steps fail to remedy the condensation, call a chimney professional to inspect your chimney..

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