DIY double glazing.

Oct 20, 2017 13 Replies

The outer pane of a DG panel cracked on my conservatory roof, the inner pane was OK. I wanted the quickest easiest repair so just removed the outer glass, squirted black roofing repair mastic around the rim and dropped a new pane of glass on, then replaced the wooden beading that held it in place.



Does anyone have any idea what problems I can expect and how soon? I suppose the acrylic mastic seal will be permeable to water vapour and it will eventually mist up from the inside. How long have I got?



Has anyone done this before?


replying to Rednadnerb, Iggy wrote: Depends what the DG was. If it was just DG with a dead-air space, then I wouldn't expect anything different than what you had originally. If it was an actual "insulated unit" with Low-E Coating and Argon Gas Insertion, then you may regularly experience condensation with the absence of those components. But, since you put the wood frame back on, then you gave a solid UV-barrier to the mastic. I'd suspect you're good for at least a decade.

Roofing sealants aren't acrylic, they have to be waterproof. So if there are no gaps in your sealant you should be ok.

NT

You are right. It is 'polybutene based'. I have no idea what that is but it sounds good. As i pressed the glass down I could see the seal was good.

The aluminium spacer is full of dessicant. Its what keeps it dry. If it has been used up you will get misting pretty soon. You can buy it and replace it but you can probably claim on your insurance for a new unit.

All dg sealed units are insulating units. Condensation has no conection with use of argon & IR reflective coatings.

replying to tabbypurr, Iggy wrote: Incorrect and his didn't fog once broken. The Argon (or even just dead-air space) allows the glass to stay warm at all times and the Low-E is a radiant barrier that minimizes solar and interior heat gain shocks.

what is?

what are you talking about?

which glass do you mean, inner or outer or both?

yes

no.

NT

You're welcome to post here but saying "Incorrect" doesn't help us know what is incorrect. Context is everything.

This might assist you with posting to a newsgroup, albeit through a website:

formatting link

- If you are sending a reply to a message or a posting be sure you summarize the original at the top of the message, or include just enough text of the original to give a context.

replying to tabbypurr, Iggy wrote: Doesn't matter, you said neither have any condensation avoidance value. Sorry but, neither my previous 20-year old (before Low-E) nor my now 7-year old new windows develop regular condensation. It takes just the right sudden (within an hour) big humidity rise to get any condensation on my glass. Otherwise, steadily high humidity outdoors doesn't develop condensation at all.

replying to Fredxxx, Iggy wrote: That's a shame. Thanks for the assistance, but I won't be sinking to usenet's nor newsgroup's level.

what doesn't?

huh?

You seem confused about who has said what, and your replies are too vague to know what half of them mean. Start by quoting what you're replying to.

replying to tabbypurr, Iggy wrote: Oh, I see, Alzheimer's. I should've guessed. No problem, just go with the first answer...it's the only accurate and sensible one. I suggest you refrain from providing advice, since what you recall is completely wrong.

I see you've still not learnt how usenet works.

NT

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