Paille-Tech Positive House

Gallery Paille-Tech Positive House 1
Gallery Paille-Tech Positive House 1
February 2021
Headquarters 5150 Floreffe, Belgium

Paille-Tech Positive House - A low-energy, healthy and comfortable prefabricated home built from local sources

Today, the construction sector is responsible for ≈39% of total annual greenhouse gas emissions. While the energy consumption of buildings is expected to decrease steadily, the energy embodied in building materials still accounts for 11%. The conventional buildings rely upon concrete or terracotta for the structure, and petrochemical foam or mineral fibres for insulation which are carbon-intensive. In opposition, Paille-Tech houses offer a comfortable, healthy and durable home, highly energy-efficient and environmentally friendly. Compared to the standards materials, the solution is low in embodied-energy and not exhausting non-renewable resources. All materials are hardly processed (e.g. no cooking) and locally procured (less transport). One m² of Paille-Tech wall requires for its production 68 kWh of non-renewable primary energy, compared to 251 kWh for a concrete and XPS wall with the same insulating value. In-shop prefabrication ensures fewer nuisances for the neighbourhood and a shorter installation time, resulting in economies (scaffoldings, no double house-renting). During its manufacture, no less than 44 kg of CO₂ equivalent is stored, whereas a conventional wall releases 50 kg into the atmosphere.

  • /

Key features

  • Walls are 84% more insulating than the Belgian norms, and roofs 71%.
  • Quickly habitable house – 3 weeks of prefabrication, 1 week of installation, 4 months of equipment and finishes
  • A single compact stove can heat an entire house. No air-conditioning needed.
  • The production of a Paille-Tech house requires 73% less non-renewable primary energy than equivalent mainstream alternative.
  • Carbon sink – building a Paille-Tech's standard house stores 18.84 tons of CO₂ over its entire lifespan.
  • No toxic products are required to guarantee protection against fire or rodents


  • Up to 2105 € / year of energy savings, compared to a house conforming to the 2017 thermal regulation in the Walloon Region
  • Thanks to its rapidity of building, one year's rent can be saved compared to a conventional construction
  • Used materials have proven their durability over more than a century.

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

Looking For

Activity Region

  • /


Luxembourg, Belgium,

  • Headquarters
  • Activity

Related Topics

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.