Man creates roof made of cardboard and agricultural waste for precarious houses and installs hundreds of units in vulnerable communities; modular panels make homes up to 6°C cooler and last up to 20 years.

Written by Alisson Ficher

Published on 16/05/2026 at 22:09

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Solution created in India transforms recycled cardboard and agricultural fibers into modular roofs for vulnerable housing, reducing internal heat, leakages, and wear caused by fragile metal covers. The system has already been installed in hundreds of houses and promises durability of up to two decades.

A modular roof developed in India uses recycled cardboard and natural fibers to improve low-income housing, with panels that promise to reduce internal heat, prevent leakages, and replace fragile metal covers in vulnerable communities.

Called ModRoof, the system was created by ReMaterials, a company founded by Hasit Ganatra, in Ahmedabad, in the Indian state of Gujarat.

The solution transforms packaging waste and agricultural materials, such as coconut husk fibers, into roofing panels aimed at low-income families.

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Modular roof reduces heat inside houses

ModRoof transforms recycled cardboard and agricultural fibers into roofs that reduce heat and leakages in vulnerable houses.

The panels are about 50 by 50 centimeters and are installed side by side on a wooden or metal structure.

Between the modules, the application of sealant helps to form a continuous surface, designed to prevent water entry and increase the house’s protection.

The composition combines discarded cardboard, natural fibers, adhesives, waterproofing additives, and external coating.

The result is a lightweight, standardized, and replaceable panel that can be individually replaced when a piece shows wear or damage.

This modular format facilitates transport, installation, and maintenance in areas where access is limited.

It also reduces the dependence on large custom-made pieces, which is important in communities with narrow streets, irregular constructions, and little specialized labor.

Modular system keeps homes up to 6 °C cooler

The most evident difference compared to metal tiles appears in thermal comfort.

In tests reported on the product, a house with metal roofing reached 42 °C inside, while a similar home equipped with ModRoof recorded 36 °C.

The reduction of up to 6 °C can have a direct impact on the routine of families living in small houses, often without air conditioning, with limited ventilation and high exposure to heat during part of the day.

Besides the heat, the system aims to reduce problems related to rain.

Metal and improvised roofs can suffer from corrosion, displacement, and leaks, which affect furniture, food, school materials, and the safety of the residents themselves.

Panels made with agricultural waste and recycled cardboard

ModRoof transforms recycled cardboard and agricultural fibers into roofs that reduce heat and leaks in vulnerable homes.

Technical data associated with the manufacturer indicate that each panel supports approximately 200 kilograms of point load.

The estimated lifespan of the system ranges between 15 and 20 years, depending on conditions of use, installation, and maintenance.

Engineering for Change records about 500 systems installed in communities served by the project.

The number shows that the technology has moved from the demonstration phase to being applied in real homes of vulnerable families.

Access can also occur through microfinancing, a model mentioned in the technical description of the product.

This alternative seeks to spread the cost for residents who would hardly be able to pay for a better roof all at once.

ModRoof relies on two axes: waste reuse and housing improvement.

By using discarded cardboard and agricultural fibers, the technology creates a new purpose for materials that could end up in landfills or informal disposal.

At the same time, the product tries to solve one of the most critical parts of a low-income house.

The roof directly affects the internal temperature, protection against rain, noise, preservation of objects, and time spent on repairs.

Local production in Ahmedabad also reduces the reliance on more expensive conventional materials.

Coconut fiber, abundant in the region’s agricultural chains, is used as a natural component in an application that requires strength, waterproofing, and durability.

The Indian solution fits into a category of social technologies aimed at improving specific parts of housing without requiring a complete reconstruction of the property.

In this case, the intervention occurs in a visible, expensive, and essential element: the roof.

For families living in dense areas, with little greenery and high exposure to urban heat, small constructive changes can alter the use of the house.

An environment a few degrees cooler allows for staying indoors longer, resting better, and reducing discomfort during periods of intense heat.

The system does not solve the housing deficit on its own, but it shows how discarded materials can gain practical function in affordable housing.

The combination of waste, industrial standardization, and modular installation counters the idea that reuse means improvisation or low resistance.

In countries exposed to heatwaves, heavy rains, and housing inequality, solutions like ModRoof expand the debate on affordable construction.

The innovation lies less in creating an entire house from scratch and more in redesigning a decisive part of the dwelling with available materials, lower cost, and direct application.

Man creates roof made of cardboard and agricultural waste for precarious houses and installs hundreds of units in vulnerable communities; modular panels make homes up to 6°C cooler and last up to 20 years.

Modular roof reduces heat inside houses

Modular system keeps homes up to 6 °C cooler

Panels made with agricultural waste and recycled cardboard

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Man creates roof made of cardboard and agricultural waste for precarious houses and installs hundreds of units in vulnerable communities; modular panels make homes up to 6°C cooler and last up to 20 years.

Modular roof reduces heat inside houses

Modular system keeps homes up to 6 °C cooler

Panels made with agricultural waste and recycled cardboard

Social technology seeks to improve vulnerable housing

While an average building in London or New York takes three years to be completed, in China a 26-story tower went up in five days with about 100 workers, and the global modular construction market already moves US$ 95 billion per year.

A Chinese factory in Guangdong is assembling a humanoid robot every 30 minutes while Tesla, Figure, and Boston Dynamics still struggle to deliver 10 thousand per year.

Australia installs giant concrete structures on the seabed 800 meters from the shore to create an ocean intake for desalination that will draw in saltwater and produce 30 million liters of drinking water per day.

Secret chamber sealed 4,500 years ago found in the Pyramid of Khufu, and Hawass announces its opening to the world in 2026

A public school student single-handedly created a machine capable of treating water for up to 50 people using only solar energy. It was awarded third place at one of the most important science fairs in the world.

Germany installed vertical solar panels on a lake in Bavaria, and the result broke conventional logic: instead of producing energy at midday peak, the plant generates more early in the morning and in the evening, exactly when families turn on appliances and factories are in full swing.

While communities suffer from water scarcity and the advancing desert, women in Morocco use nets high up in the mountains to trap fog droplets, fill reservoirs, and transport drinking water through more than 10 km of piping.

Houses with unrecyclable plastic become an option for families: they use RESIN8 blocks, solar panels, efficient stoves, and have international certification while transforming difficult waste into social housing.

Panamax ship arrives at the Port of Salvador and marks an unprecedented operation at Brazil’s first port after technical studies, new equipment, and expansion of Bahia’s logistical capacity.

Italian architects create a 3D-printed house with local clay, without traditional bricks, using soil from the site itself to build a 60 m² dwelling in about 200 hours of printing.

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Panamax ship arrives at the Port of Salvador and marks an unprecedented operation at Brazil’s first port after technical studies, new equipment, and expansion of Bahia’s logistical capacity.

A R$ 25 million bridge in Santa Catarina will replace a ferry at a tourist spot, cross the Araranguá River, gain two lanes, LED lighting, and create a new road connection with construction authorized in 2026.

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As the city of 42 million people sinks, the government bets on the jungle to build a new $33 billion capital that still faces delays and uncertainties.