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Why Is There Ice Buildup On My Windows And How To Get Rid Of Them?

The cold season is here and so are the frosted windows, bringing up the happy childhood memories of smiley faces on them. Though enjoyable, you need to watch out for this frost and ice build-up on windows due to their hazardous impacts. Some of the implications of ice buildup include window damage, health issues, mold accumulation, and increased energy costs. To help you understand a bit more about the same, this blog will cover the causes of icy windows and how to reduce them.

Why Do I Have Ice Buildup On Windows?

Condensation/ Water Vapor

Water vapor is the moisture present in the air. The water vapor trapped inside our house is drawn towards the windowpane when the climate drops below zero. Upon making contact with the cold glass, this moisture changes to water droplets when the window surface goes below the ‘dew’ point. This transformation appears as condensation and can freeze into ice crystals in no time on the inside of your windows.


The measure of water vapor in the air is known as humidity. As the temperature gets colder, the amount of water vapor that the air can hold in the gaseous state decreases. An increase in humidity will then increase condensation on your windows. Showering, cooking, incorrect furnace humidifier settings, and improper laundry room ventilation are some reasons why your house might be more humid than usual.

Air Leakage

Sometimes, windows may start to leak air, thus enabling ice formation on your windows. Some reasons for air leakage are as follows:

  1. Improper windows installation

  2. Little to no insulation around the window frame

  3. Missing or worn down weather-stripping

  4. Damaged, worn down, or old windows

Single- and double-hung windows, as well as horizontal sliders, are most vulnerable to air leakage. On the other hand, casement, hopper, awning, and tilt turn window types have low air leakages.

Low-Quality Windows

Poorly performing windows are often unable to insulate against the cold air properly, letting to ice formation on your windows. Windows can be made more efficient by focusing on its frames, glazing, glass, and installation.

How Can I Reduce Condensation And Ice Buildup On Windows This Winter?

  • Switch On Your Exhaust Fans

Either switch on your exhaust fans or open the windows while showering and cooking.

  • Use Dehumidifiers

Use a dehumidifier to pull out the trapped moisture in the house.

  • Monitor Your Water Heater/ Furnace

Make sure your water heaters and furnaces are running up to speed by calling a service person.

  • Open The Blinds And Curtains

Reduce the moisture in your room by allowing air to circulate.

  • Seal Windows With Caulking

Use foam sealant to seal the windows in case there are any leaks or gaps around them. You can also use caulking to seal the joints where the sashes meet the frame.

  • Keep Your House Adequately Warm

You can place a space heater in a room that is prone to frost at night to increase the temperature.

  • Install HVR System

A heat recovery ventilator system can circulate air inside your room and bring in the fresh air. This helps your house to remain ventilated and decrease condensation.

  • Consider Two- Or Three-Paned Glass Windows

These high-quality windows contain argon gas, which prevents ice buildup. They preserve energy as well.

  • Upgrade Your Windows

Go for the insulating qualities of double-, triple-paned glass units and vinyl frames. Your installation process should also be top-notch to reduce frosting. To upgrade your windows or get your current ones checked by an expert for free, call RDWD at 403.348.6433.

Red Deer Windows & Doors offers windows of premium quality that will prevent ice buildup on your windows. They also offer free onsite consultation to upgrade your windows. Moreover, RDWD provides a lifetime warranty on its products. To get started, request a quote by filling out a quick form.

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