Eco-extension with monolithic ceramic block system and woodfibre external insulation – Hemel Hempstead
This extension was built with 190mm monolithic ceramic blocks and a thin joint mortar system. This system was used instead of a traditional cavity wall to make it much more energy efficient and eco-friendly. The new walls are insulated with 200mm thick woodfibre boards externally, finished with a breathable render.
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![](https://eco-renovation.co.uk/wp-content/uploads/2019/06/bark.png)
![](https://eco-renovation.co.uk/wp-content/uploads/2019/06/tp2.jpg)