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> Standard double glazing How is the code still allowing new construction with windows having U of 2 (such as double glazing)? A more restrictive code would r
by alkonaut 5y ago
> Standard double glazing
How is the code still allowing new construction with windows having U of 2 (such as double glazing)?
A more restrictive code would reduce a country's CO2 footprint, companies would sell more expensive products like windows, and no one except the few constructing new homes would be economically impacted - and obviously only short term, while the economic gains are reaped by everyone. So how is this not politically easy to just...do?
- KaiserPro 5y ago> How is the code still allowing new construction with windows having U of 2 (such as double glazing) its complex. but as I'm retrofitting the rules are different. The standards are here: https://great-home.co.uk/building-regulations-current-u-values-for-insulation-in-homes/ https://great-home.co.uk/building-regulations-current-u-valu... But the real kicker is that glazing should have bleeder vents in them, in some circumstances. Which is a pain in the arse. Most of my windows don't have them, but the two in the loft extension do.
- alkonaut 5y agoYeah having different rules for retrofitting is understandable (Although it would be good if those who retrofit were at least required to improve the status quo of the building, if not required to bring up to the standard of new building). But what blocks the code from saying e.g. U=1.2 for new construction which is a normal (and honestly pretty cheap) triple glass window?
- Mvandenbergh 5y agoEffectively it isn't allowed since the whole building has to meet a minimum efficiency standard which would be impossible to meet with U=2 windows throughout. My double glazed windows have a U value of 1.2 and typical for triple is 0.8 so the improvement isn't that big between good new double glazed and triple.