Ceiling beams in masonry: Typical mistakes + solutions | bionic3 Pure knowledge

Опубликовано: 23 Март 2026
на канале: bionic3 | Luftdichtheit geprüft
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"I haven't found a video about joist ceilings on your site yet. In older buildings, you often find that the space between the joists has bare brickwork, which is therefore leaky. What's the best way to deal with this? Should I completely seal the ceiling underneath and the floor above, then connect it to the plaster, or should I plaster over the gaps between the joists and the wall with a plasterable adhesive tape? What happens if it gets wet due to driving rain on the west-facing facade? Can the joist still dry out if necessary?"

This was a comment on our video "Attic Conversion: Typical Mistakes with Airtight Connections"    • Dachausbau: Typische Fehler beim luftdicht...  . In this video, Jan Bernhardt and Holger Merkel answer the question.


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Follow us for more videos:    / @bionic3luftdichtheitgeprüft  

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If you have any questions, comment here on YouTube, on our blog https://luftdichtheit-geprueft.de, or on social media. Feel free to email us at [email protected]. You can find out more about us here: https://www.bionic3.de/ueber-uns/. For urgent questions, please contact Holger directly at +49 7272 927385. Holger Merkel [email protected]

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👉 Subscribe to our channel:    / @bionic3luftdichtheitgeprüft  

👉 Technical book: Airtightness of Buildings. Practical Guide

https://luftdichtheit-geprüft.de/fach...
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👉 More expert knowledge on proper construction and renovation in our blog https://luftdichtheit-geprueft.de 👉 News on airtightness, blower door tests, and quality in construction https://www.bionic3.de/newsletter/
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Do you have any questions? Then comment here, on the blog, or contact us directly. The easiest way to reach our bionic3 airtightness-tested team is via
[email protected] and the bionic3 headquarters: ☎︎ +49 7272 927385

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If you would like to contact someone from our bionic3 airtightness-tested team individually:

👱‍♂️ Dirk Kabisch [email protected] 📱 +49 151 40182281 (Blower door measurements, leak detection, presentations, advice on blower door equipment; blower door tests of large halls and buildings) 🌍 https://luftdichtheit-geprüft.de/2017...
👱‍♂️ Jan Bernhardt [email protected] 📱 +49 175 9334931 (Air tightness consulting, construction site support, blower door tests, leak detection, training) 🌍 https://www.bionic3.de/ueber-uns/
👱‍♂️ Holger Merkel 📩 [email protected] 📱 +49 171 706 1344 ☎️ +49 7272-927385 🌍 https://luftdichtheit-geprüft.de/2013...
👩🏻📩 [email protected] 🌍besser-als-marketing.de/ueber-uns/ 👱
👱‍♂️ Simon Lukas Kohnert 📩 [email protected]

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Which social media channels are you active on?

We'd love for you to connect with us:

  / luftdichtheitgeprueft     / luftdichtheitgeprueft     / bionic3-luftdichtheit-gepr%c3%bcft  

Here are the individual social media profiles of our team members:

Jan Bernhardt on LinkedIn:   / jan-bernhardt-6b55481bb  
Dirk Kabisch on LinkedIn:   / dirk-kabisch-89450a1aa  
Holger Merkel on LinkedIn:   / holger-merkel-b16316125  
Heide Merkel on LinkedIn:   / heidegentner  
Simon Lukas Kohneret on LinkedIn:   / simon-lukas-kohnert-80a3542b1  

You can find our construction podcast, luftdichtheit-geprueft.de, on all other common podcast platforms. We look forward to your feedback and would appreciate it if you shared our podcast.


  / simon-lukas-kohnert-80a3542b1  

You can find our construction podcast, luftdichtheit-geprueft.de, on all other common podcast platforms. We look forward to your feedback and would be delighted if you shared our podcast.





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