B STORAGE ROOM B
B FINISHED BASEMENT B
I have a storage room that runs the length of the front of the house
under the porch. It's around 36' x 3' and has block walls.
I recently finished my basement (which this room shares a wall with) and
found a lot of dripping condensation on the corrugated steel ceiling in
the storage room. I posted here about it a while back and was told that
I needed to coat/insulate the metal on the ceiling that the concrete
porch pad was poured on.
Well... I went ahead and insulated that metal - coated it with the
greatstuff spray foam and set rigid foamboard insulation sheets under the
coating. Seems to have worked pretty well since I no longer have any
visible condensation - at times it was dripping in there like a
rainforest before I coated the ceiling.
While I was at it, I also thorosealed the walls - both the three under
grade and the one that borders the basement. The dashes in the wall
above represent an insulated steel door going from the storage area to
Anyway, it's all done now, but the results weren't what I expected... I
put a humidity guage in there and while I don't see any visible water or
condensation, it's pretty much stuck around 90% humidity. In the
basement area it stays at around 50%-60%, but that goes up if I leave the
door to the storage area open.
Any idea what could be causing this? I need to get that number down so
that I can actually use that storage area for storage! :)