19th century methods albeit spray foam was not about then. The big issue,the big question, is was the steel protected before spray foam chucked on. I don't mean a slap of paint. I mean sand blasting mill scale off then hot zinc coated the 2 pack paint then insulation not spray foam. That is my idea of steel protection.
I’d like to see more hybrid versions
19th century methods albeit spray foam was not about then.
The big issue,the big question, is was the steel protected before spray foam chucked on.
I don't mean a slap of paint. I mean sand blasting mill scale off then hot zinc coated the 2 pack paint then insulation not spray foam.
That is my idea of steel protection.