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#Retrofitting

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Jon Udell

I lost a lot of sleep fretting over a poorly-insulated house in New Hampshire that was prohibitively expensive to retrofit.

While tossing and turning, I imagined solutions enabled by synthetic biology. Like organisms that grow to fill wall cavities, then die leaving inert closed-cell foam. Or that grow to seal windows in the fall and dissolve in the spring. All for practically no cost.

#energy #insulation #retrofitting

euronews.com/green/2024/09/23/

euronewsEnergy-leaking homes some of ‘biggest culprits’ of UK climate changeUnder current plans, it will take 90 years for the insulation in all of the energy inefficient homes to be upgraded.
Juggling With Eggs

I hope that everyone was evacuated from this towerblock in #Dagenham and that they are medically ok this morning.

It appears to have been a close call. Clearly lessons have been learned from #Grenfell and those are ongoing in terms of removing flammable cladding.

The risks and attention to detail for #retrofitting these blocks should not be underestimated.

theguardian.com/uk-news/articl

The Guardian · Hundreds of London firefighters attend Dagenham flats blazeBy Caroline Davies
nieebel

1978: Die erste Wärmeschutzverordnung orientiert sich noch nicht an kWh/m², sie führte zwar Anforderungen an den Wärmeschutz von Gebäuden ein, aber noch keine konkreten Energieverbrauchsgrenzwerte.

1984: Auch die zweite wird nicht in kWh/m² ausgedrückt.

1995: Auch die dritte gibt keine genauen kWh/m²-Werte vor.

2002: Mit der Energieeinsparverordnung (EnEV) 2002 wurde eine Obergrenze von ca. 100 kWh/m² für Neubauten eingeführt.

2009: Mit der EnEV 2009 wurde der zulässige Jahresprimärenergiebedarf für Neubauten um ca. 30 % gesenkt. Das ergibt einen Richtwert von ca. 70 kWh/m².

2014: Die EnEV 2014 senkte den Jahres-Primärenergiebedarf erneut um 25 %, was einem Grenzwert von ca. 52,5 kWh/m² entspricht.

2016: Mit der EnEV 2016, wurde der Primärenergiebedarf nochmals um durchschnittlich 25 % gesenkt. Das ergibt einen Richtwert von ca. 40 kWh/m².

2021: Mit dem Gebäudeenergiegesetz (GEG) bleibt der Jahres-Primärenergiebedarf grob gesagt bei den Werten der EnEV 2016.

#retrofit#retrofitting#wohnen
Juggling With Eggs

Just been to a #Norwich for Warm Homes talk on #retrofitting. The turn out exceeded my expectation - the room was full to bursting!

It’s great to realise so many people want to be on board this journey to insulate their homes and make them more energy efficient.

It’s daunting knowing the huge costs and the lack of skilled and qualified coordinators, assessors, designers and installers in our area to make it happen.

The government must do more to make retrofit accessible to all.

Juggling With Eggs

So the opinion piece I wrote for my local paper last week about #Sunak frittering away a vital decade on climate action, making it almost impossible for UK to reach #NetZero by 2050 because of his delays to #retrofitting homes, has morphed into a letter…just picked up a print copy of it.

Alt Text: photo of the letters page of the Eastern Daily Press. My letter is ‘Sunak losing vital time’

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