A chestnut and oak cobwood roundhouse in Vausseroux, France

The roof tiles are fixed to the wooden sarking (or pug) with cob but with an additional 10% lime in the mix to make it more water resistant. In the video above you will see some techniques for planning out and laying the tiles on the reciprocal roof. A coloured bottle mandala was built into the roundhouse which you can just see above on the left of the roundhouse. Tony's work has been so inspirational to many that the Welsh government's guidelines for development of settlements in the open countryside called 'One Planet Developments' uses Tony's home on the cover of the Technical Advice Booklet. You can see more of Tony's work in the collection of pictures far right and find out more about this building in our natural building group, including a picture of the bottle mandala from the inside.