Is repairing foggy windows rather than replacing them a reliable cost effective way to go?

Question Icon
Posted by: from Edmonton
4/29/2014 at 7:37:29 PM

We have condensation in about half of the 21 window units in our home and need to do something about this. We are seniors and will be moving to a seniors accommodation in a few years or longer if our health stays the same as it is now.

User Icon
Date/Time4/29/2014 at 10:04:11 PM

I have changed the glass on 2 of my windows in my home. 2 double pane 5'x5' glass pieces came at just under $600 delivered (took a bit of shopping around as we got prices as high as $2,000 for the same glass) And it took about 2 hrs each to install with a good friend.

The windows each would've been $1,500 for the cheapest and $3,000 for what we have, so we came at 10% of replacement cost.

But I am an experienced contractor, in your case you need to factor in labour costs.

User Icon
Date/Time4/30/2014 at 7:32:13 AM

How old are the windows? Perhaps there is some warranty on the glass. The units we install are guaranteed for life. Call your builder or window supplier and find out.

Best regards,


User Icon
Date/Time5/2/2014 at 7:12:53 AM

I had a few windows in my house repaired by having two holes drilled in opposite corners from exterior. Worked well.

However if the window is opaque due to the water in between defogging will not work. It only works well where the condensation has not etched the glass. You will lose a bit of R value. Its a lot less costly then having the window completely replaced.

Others may have differing opinions but thats been my experience. And not all companies who provide this service are equal. So do your home work and ask about warranty.

User Icon
Date/Time5/4/2014 at 8:37:46 PM


I agree with some of the comments from Alex and Raymond. Repairing foggy windows is definitely a cost effective, and lasting solution if done properly.

There are two ways to go with it. You can either defog the windows (as suggested by Raymond), or change the sealed units (only the glass, not the whole window). Both solutions will save you thousands of dollars compared to a complete window replacement, and are way less intrusive. Of course, a proper assessment has to be done to ensure which solution would work best given the current condition of your windows.


Search the TrustedPros directory and discover the best contractors in your area.

Find your home service pro
Great renovations start with a great contractor.

Since 2004, TrustedPros has been helping homeowners find the right contractor for their home improvements and repairs.

Post Your Project

Within hours you'll be comparing offers from top-rated professionals. It's free to post and you're under no obligation to hire.

Trustedpros Inc. does not warrant the accuracy, completeness, safety, legality or usefulness of any Content, or Whether Content is Current and up-to-date, and TrustedPros Inc. Shall have no liability whatsoever with respect to your use or reliance upon any content or for content being removed or otherwise ceasing to be available. Please refer to the terms and conditions of use of this websites for more details.

Get Free Estimates

Post your project and compare offers from top-rated pros.