This house resources PET bottles uses about 8000, casa ecológica EcoTec create a built in Honduran. Roof "live" (green roof) are made of soil and insulates the house better than a conventional roof. It weighs 30 metric tons. When wet, 102 square meters (m2) roof life. casa ecológica have a wall to support the weight of PET bottles TSB.
Eco-tec’s casa ecológica house 
