Comments on: When Double Glazing Goes Horribly Wrong… http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/ An Evolving Exploration into the Head, Heart and Hands of Energy Descent Mon, 13 Feb 2012 00:35:27 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Guy Mercer http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/comment-page-1/#comment-61371 Guy Mercer Thu, 12 Feb 2009 11:47:53 +0000 http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/#comment-61371 Water accumulates from condensation as air is pumped in & out through a small leak above the bottom due to temperature changes. The insulation is from "still air" between the glass, hence 20mm (3/4 inch) gaps are the best. Any wider and circulation currents reduce the insulation value. To Get rid of the water drill a small hole (3mm 1/8 ins )in the bottom of the unit that drains to the outside of the window. It will not reduce the insulation properties and air sucked in ( when the unit cools) will be from outside which will be drier than the air in the unit. You may get internal condensation ( which can freeze on the outer pane) when the temperature outside cools rapidly, but it will always dry out. Water accumulates from condensation as air is pumped in & out through a small leak above the bottom due to temperature changes.
The insulation is from “still air” between the glass, hence 20mm (3/4 inch) gaps are the best. Any wider and circulation currents reduce the insulation value.
To Get rid of the water drill a small hole (3mm 1/8 ins )in the bottom of the unit that drains to the outside of the window. It will not reduce the insulation properties and air sucked in ( when the unit cools) will be from outside which will be drier than the air in the unit.
You may get internal condensation ( which can freeze on the outer pane) when the temperature outside cools rapidly, but it will always dry out.

]]> By: Michael http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/comment-page-1/#comment-57585 Michael Fri, 23 May 2008 21:19:52 +0000 http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/#comment-57585 <p>I worked for British Rail Derby works in the sixties and this problem was common in the DG units,I think the max amount of water I noticed in one window was about three quarters way up it. I remember they had a air pump to pump dry air through the unit to dry it out without taking the window out. Michael.</p> I worked for British Rail Derby works in the sixties
and this problem was common in the DG units,I think the max amount of water I noticed in one window was about three quarters way up it.
I remember they had a air pump to pump dry air through the unit to dry it out without taking the window out.
Michael.

]]> By: pat http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/comment-page-1/#comment-55665 pat Thu, 21 Feb 2008 22:22:17 +0000 http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/#comment-55665 <p>Rob No vacuum in regular double or triple glazing but university of ulster have invented a real evacuated pane with thousands of little needles holding the glass apart. Very, very good insulation and they use less resources to make. Noones making them commercially yet. Cheers Pat</p> Rob
No vacuum in regular double or triple glazing but university of ulster have invented a real evacuated pane with thousands of little needles holding the glass apart. Very, very good insulation and they use less resources to make. Noones making them commercially yet.
Cheers
Pat

]]> By: Robert Lauder http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/comment-page-1/#comment-18844 Robert Lauder Thu, 08 Feb 2007 12:44:42 +0000 http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/#comment-18844 <p>You can't find buildings with panes of glass 1m diagonal built before the 1940s.</p> <p>I can envisage a farm field full of the things for use as single sheets when the machinery to make large panes of glass can't run. Breaking a large flat, clear pane will be seen as yet another really dumb thing we did back when...</p> <p>I think storing them (under a walnut tree obviously), would be a shrewd long term investment.</p> You can’t find buildings with panes of glass 1m diagonal built before the 1940s.

I can envisage a farm field full of the things for use as single sheets when the machinery to make large panes of glass can’t run. Breaking a large flat, clear pane will be seen as yet another really dumb thing we did back when…

I think storing them (under a walnut tree obviously), would be a shrewd long term investment.

]]> By: Lyn http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/comment-page-1/#comment-18745 Lyn Thu, 08 Feb 2007 02:42:53 +0000 http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/#comment-18745 <p>Most double glazed windows are filled with air or Argon. Evacuated units are relatively rare. For one thing the typical eighth inch glass panes would break from atmospheric pressure pushing on the outside.</p> Most double glazed windows are filled with air or Argon. Evacuated units are relatively rare. For one thing the typical eighth inch glass panes would break from atmospheric pressure pushing on the outside.

]]> By: Mark Forskitt http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/comment-page-1/#comment-18136 Mark Forskitt Tue, 06 Feb 2007 08:55:32 +0000 http://transitionculture.org/2007/02/06/how-to-tell-when-your-double-glazing-needs-replacing/#comment-18136 <p>There is another very good reason for getting your double glazing sorted out sooner rather than later. The embedded energy in glass is very high. Put another way - as oil and energy prices increase, the more the cost of double glazing increases. Make sure you put the old glas to good use - home made solar collectors, or cut down to make cloche are both good, much beeter thatn using a load more energy recycling it into mroe glass.</p> There is another very good reason for getting your double glazing sorted out sooner rather than later. The embedded energy in glass is very high. Put another way – as oil and energy prices increase, the more the cost of double glazing increases.
Make sure you put the old glas to good use – home made solar collectors, or cut down to make cloche are both good, much beeter thatn using a load more energy recycling it into mroe glass.

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