Q&A with Paul Marais, award-winning architect specializing in rammed earth

First off, congratulations on winning the Afrisam-SAIA Award for Sustainable Architecture + Innovation for Sustainable Product/Technology for your design of the rammed earth Otto cottage in Maun, Botswana. 

Thank you, I am very pleased for recognition of this off grid, rammed earth building , where I designed and built the house, energy & water systems and sewerage.

The award-winning rammed earth Otto cottage in Maun, Botswana. Designed and built by Paul Marais. Photo courtesy of Paul Marais.

The award-winning rammed earth Otto cottage in Maun, Botswana. Designed and built by Paul Marais. Photo courtesy of Paul Marais.

How did you first get involved in natural building?

I have been always interested in natural buildings and as a student studied natural building in Malawi and Zambia.  I have travelled a lot in remote Africa and have an interest in indigenous architecture which is both material and energy efficient.  Continue reading

First course of 2016

Poster 04_2016 sml

How to incorporate passive solar design in your building, using thermal mass and insulation.

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Passive solar design is the starting point of sustainable building. Once one understands the basic principles of using the abundant natural renewable resources at our disposal we become more creative in our approach to design, more in tune and observant, reconnecting us with the natural rhythms that surround and sustain us, if only we would pay attention. Sustainable buildings save money, reduce your carbon footprint and provide a healthy living environment, transforming buildings from consumers of energy to producers and forging buildings that meet our needs.

From a permaculture perspective, incorporating these aspects into the design of your home are excellent examples of several permaculture design principles. To mention the most obvious: Observing and interacting with your environment to make the most of the sun’s migration, catching and storing energy, using and valuing renewable resources and services, integrating functions and elements rather than segregating them and obtaining a yield from the planet’s most abundant energy source, the sun.

Passive Solar Design uses the energy provided by the sun and stored in the earth. First we need to look at how this energy is utilized by defining insulation and thermal mass and then look at the strategies of how to incorporate them into our designs.

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