Mark Siddall

@marksiddall.bsky.social

Architect @ http://LEAP4.it • Passivhaus Pioneer • Technical Advisor • Researcher • Educator • Dad • CO2 329.7 ppm

🔔 Next Alumni Webinar – This Thursday! 🔔 Join Sarah Lewis, PHT Research & Policy Director, as she shares how she’s transforming her 1950s home in Scotland towards EnerPHit, cutting heating demand by 90% while improving comfort & air quality. 📅 3rd April – Msg for details! 📩 #EnerPHit #Passivhaus

🎉 Huge congratulations to our first Certified Passivhaus Designer cohort of 2025—100% pass rate on their exam! 🔥👏 Welcome to the Passivhaus community! Can’t wait to see where your journey takes you. 🌍

I’ve been publishing a magazine on how to make buildings sustainable since 2003. I’m terrible at social media - it doesn’t come naturally to me - but I have a few ideas that might help. First, we need to clearly define what we do and don’t mean by sustainable. Confusion erodes confidence. 1)

…diving into my Time Machine this evening …what field tests and laboratory research has been done on foam insulation: 1) dimensional stability/shrinkage over time 2) impact of joint types upon heat loss If you know of research on this then give me pointers. Ta!

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