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Recycled Plastic Blocks and Zinc Roofing in Compact off-Grid Living

Authors:
Sara Elfallah, Shorieh Talaat
Recycled Plastic Blocks and Zinc Roofing in Compact off-Grid Living
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Constructed with recycled plastic blocks and topped with zinc roofing, this compact home provides an efficient off-grid living solution tailored for the unique environmental conditions of Cairo, Egypt.
5 key facts about this project
01
Constructed entirely from recycled plastic blocks for sustainability.
02
Incorporates a zinc roof for efficient rainwater collection.
03
Features natural ventilation through operable curtain walls.
04
Includes a biogas system to process organic waste.
05
Compact layout optimized for multi-functional living spaces.

The rural micro home project introduces a new take on sustainable living, designed specifically for peri-urban areas such as Cairo, Egypt. Covering about 23.5 square meters, it focuses on creating an efficient space that operates independently of external resources. The design responds to local needs, carefully considering economic, cultural, and environmental impacts while being adaptable to various global contexts.

Building Envelope

The structure features a roof made of zinc standing seam panels, which facilitate both rainwater collection and solar energy utilization. This choice reflects a practical approach to energy independence. Walls consist of modular recycled plastic blocks bound with a plant-based sealant, known as polyvinyl acetate, or PVA. This material selection not only promotes sustainability but also improves thermal performance. Large operable windows enhance airflow, contributing to a refreshing indoor atmosphere.

Active and Passive Systems

The micro home is equipped with systems that allow for efficient energy and water management. It includes photovoltaic solar panels to meet electricity needs and a biogas tank that turns organic waste into both biomethane fuel and organic fertilizer for plants. Additionally, the home features water systems that capture hot water and recycle grey water, ensuring efficient resource use.

Spatial Arrangement

The interior is thoughtfully divided into key areas: a main living space, kitchen, shower, and toilet. This setup maximizes functionality in a small area, fitting diverse needs. Flexible furniture, like a desk that can also serve as a bed, adds versatility to the living experience while maintaining comfort.

The design highlights details such as a wind catch, also referred to as "Malkaf," which helps naturally cool the home. Through evaporative techniques, it keeps indoor temperatures pleasant without relying on energy-intensive systems. The combination of these elements creates a space that meets modern living standards with a commitment to sustainability.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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