Putting the lid on

There are lots of different options for roofs detailed in the earthship books. The main point to all of them is to catch water for use in the house. This means the roof has to be non-porous and covered in a material that won't leach noxious substances into the water. They also have to be well insulated.

We've decided to go for brai/bitumen because we like the more organic look to these roofs. This will have to be painted to stop it leaching chemicals into the water.

The roof of the round room will be a dome which we would ideally like to tile. This picks up on the Moorish architectural style seen in Andalucia.

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