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Natural Bamboo Structure With Rice Husk Insulation

Authors:
Sean Bataya, Aira Iglesias
Natural Bamboo Structure With Rice Husk Insulation

Project in-detail

Constructed with natural bamboo and enhanced by rice husk insulation, the Kubo provides a sustainable living space that harmonizes traditional design with modern functionality.
5 key facts about this project
01
Constructed with rice husk ash, enhancing concrete insulation.
02
Utilizes fast-growing bamboo for sustainable siding and flooring.
03
Features a thatched roof for natural weather resistance and insulation.
04
Includes rainwater collection systems for efficient water management.
05
Incorporates roof planters to support biodiversity and cooling.

The Kubo, or Nipa Hut, is a reinterpretation of a traditional Filipino dwelling designed to address the modern challenges of urban living. Located near the Agno River, it offers a functional living space that connects with its surroundings while promoting sustainability. The project aims to provide comfort and practicality for residents, especially in light of the increasing trend towards remote work. It successfully blends cultural heritage with contemporary design principles, making it both relevant and functional.

Materials

Rice husk ash is used in the concrete construction, providing an eco-friendly option that enhances insulation and contributes to overall strength. Bamboo plays a significant role in the design, appearing in the siding and flooring due to its rapid growth and sustainable qualities. This material allows for better airflow inside the dwelling. Thatched roofs made of coconut leaves provide protection against the elements while reducing water retention. The framing incorporates coconut lumber, adding stability and environmental mindfulness to the structure.

Design Components

The design features several elements that promote passive cooling and resource efficiency. The silong, or shaded space beneath the floor, improves airflow and helps maintain a comfortable temperature. Large windows, known as dungawan, bring in natural light and cross-ventilation, cutting down the need for artificial lighting and cooling methods. The papag, or bamboo bed, provides a cooler resting place during hot days, while the batalan serves as a platform for rainwater catchment, allowing for sustainable water management.

Sustainability Features

Sustainable features are woven throughout the Kubo, making it suitable for contemporary living. Roof-mounted solar panels generate renewable energy, which is complemented by battery storage to improve energy efficiency. Rainwater collection systems are integrated into the design, enabling responsible water use. Low-energy LED lights are used inside, ensuring that the living spaces are both well-lit and energy-conscious.

Ventilation and Airflow

To enhance airflow, features like parallel bedroom windows allow easy ventilation. Bamboo louvers and slats improve circulation throughout the building. The elevated first floor design promotes cooler air in the living areas, while large doors with bamboo slats provide both privacy and airflow.

Another noteworthy aspect of the Kubo is its rooftop vegetation. These planters not only help cool the structure but also support local biodiversity. The design represents a commitment to sustainable practices while respecting traditional architectural values.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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