Hi all -
By front porch pad is concrete poured over galvanized, corregated steel plates. Underneath is a full 13 course foundation depth. I recently added an insulated door from my insulated basement into this uninsulated, under porch space.
Since I did that I've gotten a huge amount of condensation on the steel plating inside that area at times. I figure I need to add a layer of insulation to cover the steel plating on the inside, but I'm not sure what kind to use.
I was thinking about the great stuff foam, but it would turn into a huge mess - plus I have 160sqft to cover. Ideally I'd like to find a spray paint type application that I can use since troweling something into the corregrated grooves would be hard. Is there anything like this out there?
I considered using the rigid foam board, but I think the gaps between the depressed parts of the steel and the foam would still allow condensation to form and drip down from the edges...
Any ideas?