O.T.Insulating steel roof

I have a 7'x7'with a 7' ceiling control tower with steel ceiling and lots of windows.The problem is when its cold(winter)the ceiling takes on a ton of condensation and the windows are thick with fog/moisture.. I can get it up to 80+degrees in there and still wont disperse the moisture..any ideas?

Use a sprayon insulation to completely seal off the metal roof from the rom.then make sure the room is well ventilated to carry any moisture. Out.
Walt

What are you using to heat it? Electric or vented? Anything burning fuel inside (Propane or kerosene) produces lots of H2O

One of my retired co-worker's has a large metal building and he had the foam insulation sprayed
on. He has an oil fired furnace for heat and it was very comfortable in there when he sand blasted my rims. Hal

propane (LP)

Double pane glass will reduce the heating load as well as allowing the inside glass to be warm enough to stay clear. Possible option is to find used thermopane from a takeout or used materials store. Jim

From watching the home improvement shows, I think that you should have it sprayed with closed cell foam. Open cell foam will still let moisture through it.

I would use closed cell foam sprayed on and ventilate during the summer.

If you are using an un-vented propane or kerosene heater, you will [b:efdb1584ca]never[/b:efdb1584ca] keep the moisture out of a small space like that.

Water vapor is part of the exhaust gas from the burning fuel.

If you can get electric to it, a small electric space heater should work just fine.

Myron

Most people have no clue about relative humidity, dew point temp and condensation.

I have a similar problem with a rental property. 85 year old lady wants to save on AC, so she leaves windows open and vents basement where the ground temps are close to 55 and so are the basement wall temps. Her relative humidity in basement is 75%

If you go to the post below from Georgia State University and plug in the temp and humidity, you can get the dew point temp. So we have 80 degree day and 70 percent humidity in Indiana, the dew point is close to 69 degrees. What that means is when the outside air hits the cold basement walls, the walls and floor gets wet and the carpet stinks.

Tenant thinks rain water is getting in, when in reality it's condensation because she is STUPID and won't listen. I showed her, the ground outside the place where there is condensation inside is dry as can be.

Just can't teach old people new tricks.

However to solve your problem, all you need to do is bring in cold outside air, heat it up and your problem will go away. Use the equation in reverse put in cold air and humidity, then warm it up to 80 degrees and see what happens the relative humidity.

Bottom line, when anything gets below dewpoint, you will have condensation, that inclused windows and a cold metal ceiling.

Play with the equation and see what I'm talking about. It's toward the bottoom.
george
relative humidity equation

I am installing and window and fan in my gable right now, to allow some air movement in my shed.

What is a "ceiling control tower"?

You might have multiple problems, like roof/window water leaks and not enough ventilation.

If it is a totally enclosed room, worst case try adding an air conditioner to dry the air inside the room.

I'll second OH-961's comments. Un-vented propane heaters create a lot of water vapor. There is a ratio of so many gallons of water produced for every gallon of propane burned. Crack some windows open to vent the room when running a propane heater, or switch to electric heat.