Adobe plastered tire walls may be painted, preferably darker colors to accept the warmth of the sun into the thermal mass of the earth rammed tire walls.
Lighter colors reflect some energy from the sun but allow a beautiful southwestern look.
Greater World Earthship Community Development Map Earthy materials are used for the floors and walls. Bathrooms and Jacuzzis are best placed in the greenhouse. All kinds of plants thrive in Earthship greenhouses. Partition walls and arches made of aluminum cans, adobes or other materials may be used to separate the greenhouse from the room. The rooms may be Hut Modules or U Modules.