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Greenhouse Effect in a Triangle with Corten and Steel

Authors:
Rosina Dück, Jennifer Cuadro
Greenhouse Effect in a Triangle with Corten and Steel
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A large skylight captures natural light within a triangular structure defined by a durable steel envelope and warm wooden interior, creating flexible spaces for community engagement.
5 key facts about this project
01
Large skylight designed to enhance natural light and temperature regulation.
02
Triangular form allows for unique spatial flexibility and user interaction.
03
Steel envelope provides durability while the wooden interior adds warmth.
04
Integrates passive heating strategies to optimize energy efficiency.
05
Inner courtyard fosters community engagement and social connections.

The Light Triangle is located near Lake Myvatn in Reykjahlio, Iceland. It features a triangular design that focuses on enhancing user experience through effective use of space and natural light. Flexible areas within the building allow for various activities, accommodating the needs of different users in a tranquil setting.

Architecture Concept

At the heart of the design is a large skylight that plays a key role in maximizing light. Situated centrally and elevated, the skylight allows sunlight to flow into the space. Light reflects off the pavement, illuminating surrounding areas and creating a connection between inside and outside.



Environmental Responsiveness

The architecture responds well to its environment, featuring a triangular base defined by a steel envelope that forms the exterior. This layer provides strength and durability. Inside, a wooden envelope brings warmth and a natural quality to the interior spaces. This thoughtful combination enhances both functionality and aesthetics.



Material Choices

The skylight consists of triple-glazed hermetic units with PVC profiles, which improve insulation and energy efficiency. An inclined sheet metal roof is effective in directing water away while contributing a sleek profile. The facade uses glass and prefabricated concrete slabs covered with Corten steel, which withstand the local climate and requires little maintenance.



Functional Layout

The layout includes key functional areas such as waiting spaces, an office, a coffee shop, and storage. An inner courtyard serves as a communal area, enhancing interaction among users. These spaces are designed to encourage a sense of community and connection, enhancing the overall experience within the building.



The skylight not only acts as an important design feature but also optimizes energy performance, creating a greenhouse effect that helps maintain comfort and harnesses solar energy throughout the day.

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

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Competition organisers

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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