10mm double glazed units. Any experience?

[rufusgti]

I have a cottage with wooden window frames that were replaced just before I bought it so are in good condition. They're the "traditional" 16 pain Georgian? style. And are single glazed with face putty. I really like the windows and wouldn't want to change them but the property is right on a now fairly busy road and the noise from the road (especially when wet) is over powering unfortunately.

I've just been watching an old Grand designs where I just cought the end of him discussing similar type windows with a 10mm double glazed window. They seemed to be mainly focusing on their heat energy properties but i'm wondering how much benefit I could gain with regards to sound deadening. I remember when houses first went double glazed and the differences were instantly recognisable.

I'm just wondering if anyone has experience of retro fitting double glazed units in timber frames. I believe I have 16mm rebates so would only be left with 6mm. would this be enough for the putty?
Would the savings in sound be recognisable and significant. I'm not interested in the temperature efficiencies.
How much would these 10mm units cost. There are only 2 windows at the front of this house upstairs. I would do these first. So 32 little pains, Ouch!

Any other recomendations would be great.

[Slagathore]

You could fit secondary glazing?

The bigger the gap, the better it will be. Secondary glazing offers that, but isn't always great to look at.

[Pcot]

You wont get a 10mm overall double glazed unit.
The glass is 4mm each side, so that would only leave a 2mm air gap.

To the best of my knowledge, the smallest sealed unit available is 14mm. 4/6/4.

[jas xjr]

Is it not possible to leave the existing glass in place and then put one large d/g panel behind on the inside

[rufusgti]

Pcot said:

You wont get a 10mm overall double glazed unit.
The glass is 4mm each side, so that would only leave a 2mm air gap.

To the best of my knowledge, the smallest sealed unit available is 14mm. 4/6/4.

Traditionaly yes, But it seems there have been some advances.

http://www.histoglass.co.uk/thinDoubleGlazing.aspx

[Pcot]

Using 3mm glass. That's what's used to glaze greenhouses!

[rufusgti]

Yes 3mm. But if my glass is what 4mm?? then it should in theory be better, with the vacuum also. They do an 11mm unit using one 3mm and one 4mm that they aim at sound insulation. Hmmmmmm, I wonder if it is actually worth the cost.