the essentials...

of the standard are derived from scientific research to find  a building-fabric based design approach which achieves exceptional warmth and comfort


derives both from super-insulation of all external elements

- walls, roofs, floors, windows + doors  + minimising cold-bridges

  1. -and high levels of airtightness to enable controlled ventilation


is achieved by both warmth, the lacks of drafts  through excellent airtightness, and comfort ventilation  - whole-house mechanical ventilation with heat recovery [mvhr]

open source

most uk passivhaus designers are working in an open source way, sharing their rapid learning on this new UK approach

<< some passivhaus design principles [author’s copyright acknowledged]

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