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The use of PET bottles in the walls of a house in Araguaína, Tocantins, transformed discarded packaging into housing and presented a low-cost alternative to reduce construction expenses without neglecting planning, technique, safety, and environmental reuse of plastic.
Arlete Maria de Sousa, a resident of Araguaína, in northern Tocantins, built a house using PET bottles instead of bricks and significantly reduced the cost of the project, according to a report published by UOL on August 16, 2017.
The construction cost about R$ 13,7 thousand, while a similar conventional house could cost between R$ 25 thousand and R$ 30 thousand in the city, according to an estimate attributed to the resident herself by the report.
The solution attracted attention because it used a common waste, usually discarded after consumption, as part of the walls of a real dwelling, without eliminating all the traditional stages of residential construction.
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In practice, the technique used by Arlete reduced the need for bricks in the walls and allowed the reuse of packaging that would be destined for trash or conventional recycling.
According to a publication attributed to G1 Tocantins, the project used approximately 2.7 thousand soda bottles, gathered with the help of friends and donations, in a project that had family support.
The same report states that all the walls were made with PET bottles and that the resident had the collaboration of her father, João Evangelista, identified as a bricklayer.
Among the data that most explain the case’s repercussion is the price difference between the executed project and a traditional construction estimated for the same city.
According to the values reported to UOL, the house was about 45% below the minimum budget of R$ 25 thousand and more than 50% below the maximum estimate of R$ 30 thousand, depending on the finish considered.
House with PET bottles reduced construction cost
In Araguaína, the construction gained visibility by combining housing, economy, and waste reuse in an individual initiative, without being presented as a public policy or industrial construction model on a large scale.
Instead of conventional bricks in the walls, Arlete organized PET bottles as part of the construction system, transforming light and disposable packaging into elements used in the composition of the house.
According to the publication attributed to G1 Tocantins, the choice of material also contributed to speeding up the execution of the project, which would have been completed in 30 days, a timeframe cited by the resident herself.
The sources consulted, however, do not indicate the exact start or completion date of the construction, only the repercussion of the case in reports published in August 2017.
The participation of João Evangelista helps explain why the initiative cannot be treated merely as improvisation or simple stacking of packages.
Commenting on the work, Arlete’s father summed up the execution in a short phrase: “It was hard work,” a statement that reinforces the need for effort, organization, and practical knowledge during the construction.
Besides the lower cost, the resident highlighted the internal result of the residence in a statement reproduced in the publication attributed to G1 Tocantins.
Arlete stated that she was surprised by the size of the rooms and said that the house represented the realization of a dream, a point that helps to connect the story to the theme of affordable housing.
Construction had visual evaluation by engineer
The safety of the construction was also mentioned in the report attributed to G1 Tocantins, which interviewed civil engineer Adriano Luz about the result of the house made with PET bottles.
According to the publication, the professional stated that, “at first glance,” the property seemed safe, although this type of visual assessment does not replace complete technical reports or detailed structural analyses.
The same engineer classified the initiative as “an innovative and sustainable house,” an evaluation that reinforces the unusual nature of the construction without turning the method into a standardized solution for any residence.
Each construction depends on design, proper execution, and specific site conditions, especially when using alternative materials in important parts of the structure.
In Arlete’s case, the technique was concentrated on the walls, precisely the stage that usually demands a large volume of material in a masonry house.
With the PET bottles occupying this space, the resident reduced the cost of traditional components and gave a new function to packages that would generally have another destination after disposal.
The contrast between the chosen material and the final result also weighs in the repercussion, as PET bottles are usually associated with daily beverage consumption, not house construction.
In Arlete’s construction, however, they were gathered in sufficient quantity to compose divisions of a habitable house, with walls and rooms intended for everyday use.
Experience in Araguaína became an example of reuse
The house built in Tocantins remains an individual experience of reuse, carried out by a resident who sought to make homeownership viable with lower cost and use of recyclable material.
Even so, the case gained interest for showing a concrete alternative within a sensitive topic for many Brazilian families: the cost of housing.
In the comparison made by Arlete to UOL, the difference between R$ 13,7 thousand and a conventional construction estimated between R$ 25 thousand and R$ 30 thousand made the experience more financially accessible.
This snapshot helps explain why the story continued circulating as an example of economical construction associated with the reuse of plastic.
The publication attributed to G1 Tocantins also states that Arlete intended to expand the house and was already gathering new bottles to continue the project.
The intention to enlarge the property shows that the use of recyclable material was not limited to the first stage of the construction but was included in the resident’s plans for new interventions.
The case demonstrates how low-cost solutions can arise from simple materials, available in everyday life and usually treated only as urban waste.
Constructions of this type, however, depend on planning, technical knowledge, and professional evaluation so that the savings obtained in construction do not compromise safety, durability, and comfort.
