We live in Northern New York. Our home has cathedral ceilings with no
air space to the metal roofing, in the winter we get severe
condensation and leaking. We were told that removing the metal roof
and having the spray foam put in then a 2" air space, plywood and
metal roof put back on would be the answer. Does the icynene work on
roofs or only attics? It can get as cold as -50 here and when the
heat goes thru the ceiling we need to have it stopped before it gets
to the cold of the metal. Please advise