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Question DetailsAsked on 8/27/2013

does window defogging work?

double paned windows fogged up. replace window or use defogging service

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5 Answers


Definitely replace the window. Read the warranty before you proceed with any window replacement company and make sure you keep a copy.

Answered 6 years ago by Sun Control


as far as I know there is no effective way to permantly remove condensation between two pieces of glass other than complete replacement. if you are in New York call for a free estimate 1-718-863-5278

Answered 6 years ago by the new window man


The defogging services may temporarily remove the moisture, but once the seal is broken it WILL leak again, refogging in from a week to a year or so - replace the glass unit. This does NOT mean replacing the whole window and frame and such - just having the glass unit (the glass and the enclosing aluminum frame that holds the glass) replaced by a window repair company. The new glass comes facctory sealed into the metal glass frame, which is then caulked into the wood or vinyl or fiberglass or whatever window frame.

Answered 6 years ago by LCD


Here is a link I was looking for earlier but could not find - just popped up when I was looking for something else - addresses the services that claim they can defog your window and seal it without taking the glass unit out.

Answered 6 years ago by LCD


I have had six window glass units on the south side of my Anchorage, Alaska home "defogged". The process worked great for four of them, the other two were just too far gone and would refog every rain storm during the summer.

Now that said, I am getting additional windows defogged this year. The company up here will allow me to REPLACE the two glass units previously done where the treatment did not work, AND deduct the cost of the previous DeFog from the cost of the replacement glass.

Bottom Line: Defogging DOES work in MOST cases, and is worth the effort. Just ensure that your selected company will provide you the cost dollars BACK if you end up having to replace the window...UP in Anchorage they provide that warranty for 20 Years - Frankly if you have a good company standing behind their work, there is NO REASON Not to try it - For me so far it has saved from having to replace 4 glass units!

Answered 5 years ago by Guest_9731789

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