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Rainwater-Collecting Residence with Plywood and Recycled PVC Features

Authors:
Jakub Gasek, Kornelia Nejmańska
Rainwater-Collecting Residence with Plywood and Recycled PVC Features
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Incorporating an inclined roof for rainwater collection and utilizing Silvergrass for heating, this residence emphasizes sustainability while providing a comfortable home environment.
5 key facts about this project
01
Utilizes Silvergrass for heating and hot water, promoting renewable energy use.
02
Collects rainwater through an inclined roof, enhancing self-sufficiency.
03
Incorporates recycled PVC facade panels, reducing environmental impact.
04
Features a centralized heating layout for efficient thermal distribution.
05
Employs timber columns and plywood finishes to create a warm interior aesthetic.

The Silver Grass House project demonstrates a focused approach to sustainable design through renewable energy and efficient use of resources. Located in a temperate climate, the design centers on utilizing Silvergrass (Miscanthus giganteus) as an energy source. This biomass not only provides heating but also emphasizes a cycle of sustainable growth that is important in today’s ecological context.

Design Organization

The layout of the Silver Grass House is organized to maximize efficiency and functionality. The heating system is composed of a kitchen stove and hot-water boiler, both positioned near a fireplace. This strategic placement ensures effective heat distribution throughout the home. The design promotes an easy flow of movement within the space, making daily activities more convenient.

Water Management

The roof design plays a significant role in the overall functionality of the house. Its inclined shape allows for rainwater collection, which undergoes filtration before being stored in a central module. This method reflects a commitment to self-sufficiency, addressing common water management issues faced in residences. It showcases how practical design can support environmental responsibility.

Material Choices

Materials selected for the Silver Grass House support its sustainable vision while providing comfort. Inside, plywood sheets and pine floorboards create a welcoming and modern atmosphere. The walls are made of timber columns and recycled PVC facade panels, reducing the project’s ecological footprint. Polystyrene insulation is incorporated for energy efficiency, while OSB boards and timber rafters provide structural integrity.

The fireplace serves as both a source of heat and a gathering point for the living area, encouraging family interactions and creating a cozy atmosphere that enhances the sense of home.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

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Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
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Final registration deadline 30 October 2025

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