I am about to try to rebuild a double glazing unit. I read from other threads that there is a method to demist them using a small drilled hole. However some of the my ones needing repair are now marked inside and need cleaning. I want to try slicing one pane off, cleaning the glass sheets, warming the separator strip to dry the silica gel then reglueing. Question is what glue to use. First thought is two-part resin. This should be water-proof and fill any small gaps. Are vapours given off during the curing process? Is it much and would they be likely to fog the cavity?
I'd welcome any suggestions for adhesives. I am going to try one unit to see if it's possible. If anyone's interested I'll report back though obviously misting might take some time. If it proves not to be any good I'll just have to buy new units.
I'm coming to the conclusion that DG is a con. It never pays for itself as the lifetime of the units is about half the pay-back time. OK an uncertain calculation with likely fuel price rises, I agree, but still sound enough. Unless you have huge windows the percentage saving is very small. Much better to put the money into micro generation or solar water heating assuming that you've already done the sensible stuff like loft and wall insulation.
Peter Scott