Red River Valley, North Dakota | Before Covid it was $0.90 a sq foot per inch for closed cell.
Did some in 2021 for $1.20. Supposedly was going way up after that according to sales man.
Insulation place in Grafton , ND has done all of mine.
Edited by 1999 10/23/2025 18:25
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Cost of 2 inches of spray foam on steel quonset