Fogged double glading

[smithma0]

I have many double-glazed windows that have become fogged, some worse than others. In my local area (Cambs) there are a number of road-side adverts for a company that claim to be able to clear the fog without the need to replace the sealed units: www.fogx.co.uk

Does anyone have any experience of them? Any comments gratefully received

[mk1fan]

The process is a simple one and can be effective if it's done competently and the glazed units aren't completely shagged. At the end of the day it should be seen as a short(ish) term repair rather than a definative solution.

Edited by mk1fan on Monday 27th April 15:39

[Z4monster]

Personally I wouldn't waste your money. If the unit is fogged or has condensation then it's likely to be stained internally from the moisture. Once the seal has blown on the unit then unless you replace that seal it's always going to get moisture in it. Adding more dessicant to the unit will only dry it out for now. Once the original seal starts to admit moisture then it will be back to the same state. Get it replaced as the total cost won't be significantly more than the service to dry them out. (or at least I doubt it)

If it's UPVC frames then it's a job on minutes to replace the unit. If wooden frame then the original is probably being stressed by the frame expanding and will soon fail again.

[buggalugs]

I'd get some quotes for just replacing the panels cause it might not be as much as you think. I got one large and one small/medium pannel for 50 quid last year. (My neighbour installed them for me, took about an hour for both) HTH!

[Hyperion]

I had this problem with one of my windows, here's how I fixed it

The two panels of glass are bonded together with silicone and a plastic spacer all the way round.
I carefully drilled a couple of 10mm holes through the silicone/plastic surround and used a hoover to get any filings out of the hole. I then placed it on the patio in full sun all day.
This dried out the moisture, and I resealed the entire perimeter of the panel with regular silicone sealant.
This was three years ago, and it hasn't fogged up since.

Worth a try.