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Does icynene spray foam insulation support bacterial or fungal growth?

Icynene spray foam insulation does not offer any food value and therefore does not support bacterial or fungal growth.

Furthermore, it also doesn’t retain any water, making it an unappealing environment for fungal spores.

The University of Texas has done an experiment on mould growth ability on three different insulation types (Icynene, fibreglass with foil face and fibreglass with vapour barrier). In that research, icynene was found to be the best deterrent for mould growth among all the types tested.