Extension built off-site

Houses are increasingly being built offsite to ensure they are well insulated, airtight and free of thermal bridging. For Katharine and Matt Dooley that meant building with an innovative expanded polystyrene (EPS) panel system from Poland.

In this article we cover:

  • What the EPS building method consists of with integrated insulation strategy
  • Design benefits and design process
  • Build process from start to finish
  • Choice of systems
  • Full specification and supplier list

House cost: €63,000 / Renovation cost: €110,000
House size: over two stories existing 77sqm plus extension 79sqm
Plot size: ¾ acre


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Written by Astrid Madsen

Astrid Madsen is the editor of the SelfBuild magazine. She previously held the same role in an Irish trade publication, before that she worked at the National Standards Authority of Ireland. She graduated with a BA in Urban Studies from Columbia University in New York and holds an MBA from the Instituto de Estudios Bursatiles in Madrid. France of origin, she now lives in Portarlington, County Laois, where she's taken on the task of renovating a listed building! Email astrid.madsen@selfbuild.ie

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