On Jun 14, 3:13 pm, wrote:
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.

If you can stand to have the ceiling dropped 4" or so, you could put
up drywall separated with 2x4 from the present ceiling, and fill the
air space with insulation.

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

Where do you get condensation? I'd think it'd be inside the house, not
between the ceiling and the metal roof. In that case, the warm air has
to be stopped before it gets to the present ceiling.