HFO-1233zd-E blown polyurethane spray foam was applied to insulate a residential 1928 house, being retrofitted into a sustainable living project near the campus of Purdue University.
The wooden siding of the house was removed and insulating foam sprayed from the outside, simultaneously sealing gaps, cracks and holes as it was applied, providing optimal energy-efficient insulation.
HFO-1233zd-E blown foam has already been used for appliance insulation, following its approval by the US EPA. Its GWP was recently revised down to a value of 1 (note 1).
Purdue University project is to transform the house into a net-zero energy, waste and water world-class research laboratory, continuously monitoring the products and systems that use the homes energy, to provide valuable insights on technologies that enable sustainable living.
Note 1 : IPCC Working Group I – The Physical Science Basis – Chap.8 Annex 8.A.1
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