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Nov 16, 2012
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Why Are My Windows Sweating On The Inside?

Now that cooler temperatures have arrived, some homeowners may be noticing a disconcerting condition where windows sweat.  To fix this problem, you must understand that sweating windows occurs when warm, damp air comes in contact with a cold, smooth surface.  Window condensation such as this, is the same reason that a can of pop sweats when you have it outside on a hot, summer day.  Your home’s humidity levels should be 30-50% and even lower in the winter months.  If your home’s humidity is higher than this, it will be evident through “sweaty” windows.living room

What Causes Condensation On Windows?

To understand what causes condensation on windows, you must understand how humidity gets in the air.  Several ways including:

  • Steaming produced from cooking
  • Gas fireplaces without proper ventilation
  • Improperly vented bathrooms
  • Bathroom doors with too small of a gap, that traps moist air in the room
  • Inadequate dryer vents
  • Carbon monoxide exhaled through one’s normal breathing process

white kitchen

How To Fix Sweating Windows Temporarily:

  • Keep your home between 62 & 68 degrees during the winter.
  • Verify that your dryer vents are adequate for your home
  • Run a dehumidifier
  • Always run an exhaust fan when cooking and showering (especially if your bathroom doesn’t have windows)

How To Keep Windows From Sweating Permanently:

The above ideas may temporarily alleviate condensation on the inside of windows but the only way to completely rid your home issues with a window replacement.  The condensation on windows is evidence they are not providing ample insulation.  Windows best suited to provide insulation and increase your home’s energy efficiency are those that are triple pane.  This means they contain three panes of glass that are separated by air spaces.  They’re a great way to save on your energy bills because they have more surface area, which is used to absorb both warmth and cold putting less stress on your home’s furnace and air conditioner.  Vinyl and wood frames will work much better than those made of metal because metal is a conductor which means it will increase the chances of windows sweating since it will transfer the cold air indoors.

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Window Installation Reviews:

"Lindus has put in our windows, gutters, and roof. Workers are very professional. Products are excellent. Communication is great. I recommend this company to all my friends and family."

Sally R.
White Bear Lake, MN
September 19, 2022

"They replaced the windows in my house and did a beautiful job! A year later one of the windows had a leak during a rainstorm. They made multiple trips back to my house free of charge to make sure the window was no longer leaking! I couldn’t be happier with their warranty and services!"

Shane J.
Forest Lake, MN
August 31, 2022

"Window quality and trim work is fabulous. Matches so well!"

Becky C.
Hammond, WI
August 18, 2022

"Our experience was great!! Jared and Tanner were the workers. They kept us informed of their coming and going, cleaned up after each day. Great workers and craftsmen!! We will see how things go and may want more windows worked on."

Mary Ann S.
Maple Grove, MN
August 12, 2022

"We had an egress window installed, and it was completed, inside and outside in one day. The workers were friendly, hard-working, and skilled. They worked together as a team, and there was nothing to clean up when they drove away. We are so pleased with their workmanship and their friendly demeanors."

Jane F.
Hamburg, MN
August 13, 2022

"Thank you for a job well done.  We are very impressed with our new windows."

Bill & Gini R.
Maple Grove, MN
May 27, 2022
Complimentary Estimates. We Are Also Offering A No-Charge Heat Map Analysis With Insulation Estimates Through February 28th.
Some restrictions may apply. Call for details.