Closed-cell spray foam: Updates?
RICHARD EVANS
| Posted in Green Products and Materials on
I recall reading that legislation was passed a few years ago requiring that closed cell spray foam manufacturers must switch over to more benign blowing blowing agents by 2019.
Curious to know what if this has happened and if its likely that installers are now exclusively using the water-based blowing agents in the field?
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Replies
The US has not ratified the Kigali Amendment to the Montreal Protocol treaty (due to insufficient votes in the US Senate, despite a majority favoring ratification), and thus not subject to the terms.
https://kigali-amendment.openclimatedata.net/
Several vendors in the US have begun offering HFO1234ze blown closed cell foam. Almost nobody is selling water blown closed cell foam. NY regional player Aloha Energy is the only one I'm aware of with an ~R6/inch low permeance water blown closed cell foam. Icynene is selling a couple of ~2lbs density semi-open water blown foams that run about R5/inch. But for now HFCs still dominate the US market.
Thank you Dana-
This is disappointing... but good to know.
HI Rick -
Maybe the merger of LaPolla and Icynene, leaders in both HFO and water-blown spray foam, is a sign that the industry is moving in the right direction.
Peter