Condensation from a PIPE?

Question

Hi
I live in a Loft Building. I am on the last floor (4) and I have a pipe which takes the water from the roof coming through my room and going all the way down to the bottom of the building. The roof has been repaired and all the leaks as well but everytime it rains or snow the entire pipe get a large amount of condensation. I read about lots of different solutions to the problem like insulation blankets, etc However the pipe is partially resting on one of the walls so wrapping around it currently is impossible. I have build a wooden cover to go on top of it just for now so I avoid any of the books close by getting watter but I would like to figure out a solution like some sort of water resistant foam to spray inside the cover so it "wrapes around " the pipe or maybe some special foil? Any advice would be much appreciated.
Thank you

PS In some other forums I was told to use some sort of a neoprene pipe insulation but I haven't been able to find any

I also rather not use foam because I rent so my landlord wouldn't be up for me sealing his pipes:)

Answer 1

try a spray foam, in the can at most hardwares,

Answer 2

building codes require it to be insulated because of this.a professional pipe coverer will be able to wrap it. the building owner is responsible for this type of repair or upgrade. call your citie's inspectional services, and you landlord.mold and damages can result from ignoring this problem so he might want to help you.the correct material come from a supply house that won't sell wholesale.this is not home depot kind of stuff.