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Double glazing in Canberra in 2014

By Enezeusa - 12 May 2014 46

An update… The last thread about it is from 2011.

Does anyone have recommendations about double glazing?

Cheers.

What’s Your opinion?


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46 Responses to
Double glazing in Canberra in 2014
OpenYourMind 6:32 am 13 May 14

I’ve said it in previous posts on this issue. If money is an issue, and your windows lend themselves to it, it’s relatively easy to DIY double glazing. Measure your window accurately in mm. Then just buy some 12mm square timber dowel, cut it to fit tightly in your window frame against the glass. Then call ACT Plastics and get a sheet of acrylic/perspex cut to the size of your window frame (less 3mm for expansion). Then use some method of holding the perspex in eg. small clips.

Not only will you get cheap double glazing, it may perform better than double glass anyway as perspex is a worse conductor of heat.

There are some disadvantages. Perspex expands contracts more than glass, it could deteriorate over a long period of time.

But a huge advantage is your windows are very difficult to break from inside. Our toddler has smacked toy trucks into the perspex and not damaged the glass behind.

arescarti42 10:45 pm 12 May 14

Comic_and_Gamer_Nerd said :

Float glass = normal plate glass. Zero thermal advantage, even in a double glazed unit.

Proof?

Even if you’re using normal plate glass, the insulation provided by the air layer should reduce conductive losses considerably and be very effective.

JC 8:41 pm 12 May 14

Maya123 said :

Perhaps more people could afford double glazing if they dropped the entertainment room, the extra bathrooms, etc. Go for a house built for quality, not quantity as in the suburbs full of huge McMansions.

More people could afford double glazing if more people brought it. At the moment in Australia it is a niche product and priced as such. Elsewhere it is the norm and costs significantly less than what is being charged here. Vicious circle I guess.

bigred 8:25 pm 12 May 14

Proper double glazed windows are but part of the job. They need to be assisted by plugging all the leaks and good wall, underfloor and ceiling insulation. Not cheap in short term, but pays off in medium term.

Comic_and_Gamer_Nerd 7:58 pm 12 May 14

Postalgeek said :

Maya123 said :

Comic_and_Gamer_Nerd said :

No point double glazing unless every window has at least one pane of 6.38. A double glazed unit consisting of only float is a complete waste of money.

I don’t understand what you are saying. What do you mean by float and 6.38?

I assume 6.38 is thickness, i.e 6.38 mm and float glass is bottom-rung stuff you’ll find in a window pane (that being an Australian window pane), as opposed to toughened/tempered/laminated glass which you’ll see used in cars and glass doors.

Sorry sorry.

6.38 = laminated glass. That is, two pieces of glass glued together with a interlayer. The interlayer makes a huge difference to thermal leakage.

Float glass = normal plate glass. Zero thermal advantage, even in a double glazed unit.

Postalgeek 7:33 pm 12 May 14

Maya123 said :

Comic_and_Gamer_Nerd said :

No point double glazing unless every window has at least one pane of 6.38. A double glazed unit consisting of only float is a complete waste of money.

I don’t understand what you are saying. What do you mean by float and 6.38?

I assume 6.38 is thickness, i.e 6.38 mm and float glass is bottom-rung stuff you’ll find in a window pane (that being an Australian window pane), as opposed to toughened/tempered/laminated glass which you’ll see used in cars and glass doors.

Maya123 6:50 pm 12 May 14

Comic_and_Gamer_Nerd said :

No point double glazing unless every window has at least one pane of 6.38. A double glazed unit consisting of only float is a complete waste of money.

I don’t understand what you are saying. What do you mean by float and 6.38?

Zultan 6:40 pm 12 May 14

Cost me less than £2000 to have my whole house doubled glazed in the UK around five years ago (including the fitting)…

Comic_and_Gamer_Nerd 6:39 pm 12 May 14

No point double glazing unless every window has at least one pane of 6.38. A double glazed unit consisting of only float is a complete waste of money.

Maya123 6:36 pm 12 May 14

Perhaps more people could afford double glazing if they dropped the entertainment room, the extra bathrooms, etc. Go for a house built for quality, not quantity as in the suburbs full of huge McMansions.

milkman 6:03 pm 12 May 14

Double glazing costs a lot. Adding another 5-10% to the build cost of a new home pushes up the price that much more.

Personally I think the money is better spent on more insulation, more efficient heating/cooling and better quality construction.

dungfungus 3:44 pm 12 May 14

arescarti42 said :

dungfungus said :

.
I can’t understand why it isn’t mandatory for new homes to have double glazing.

dungfungus said :

.
All up cost is about $1,500 a large window / sliding door and $900 for a medium one.

You answered your own question. I’m not sure how much some cr$#%y aluminium single pane window costs, but I imagine the answer is a lot less.

The point I was making (maybe a bit deep for some readers) was that while a new house has to be “solar orientated” by regulation, they throw the baby out with the bathwater by not including double glazing as a standard.

Canberroid 3:01 pm 12 May 14
arescarti42 2:08 pm 12 May 14

dungfungus said :

.
I can’t understand why it isn’t mandatory for new homes to have double glazing.

dungfungus said :

.
All up cost is about $1,500 a large window / sliding door and $900 for a medium one.

You answered your own question. I’m not sure how much some cr$#%y aluminium single pane window costs, but I imagine the answer is a lot less.

dungfungus 12:38 pm 12 May 14

For quality at a competitive price the European Decueuninck UPVC frames from Windows for Life in Melbourne are tops. They have thermal breaks in the reinforced frames and an additive in manufacture to make them endure the extremes of temperature in Australia.
They are built like strongroom doors and are extremely secure in locking. The frames are delivered with Australia Mountain Ash reveals already fitted and are glazed in situ after fitting.
The double glazing can be obtained from Australian Glass Group in Sydney.
Unfortunately, the local agent in Canberra is not as good as the products so if you can deal direct with the suppliers do it that way. You need an expert installer (and the same person to take out old windows) and the people for that are TSW Constructions, 0422452922.
All up cost is about $1,500 a large window / sliding door and $900 for a medium one.
I can’t understand why it isn’t mandatory for new homes to have double glazing.

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