In many cases this idea of using already used plastic bottles for building is first of all environment friendly idea and second also very important- a wallet gentle. For these kind of houses you’ll need a lot of empty 1l plastic bottles with lids, sand and cement fr filling them with. Than for the house are also needed window frames, door frames, metal or wood beams for the roof, roofing sheets, tiles, paint (optional) and building tools (of course).
The construction process is showed in the video bellow and how will the house turn out at the end. Take a look!

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