Quoted:
So, after years of chasing leaks, I've finally figured out that the metal roof on my shed/shop condenses and drips. In some places, the insulation got so water logged that it fell down. The shop is heated so naturally this is more of a problem in winter than summer. Is there a quick and easy fix like mopping the whole thing in tar or am I F––k'd ? Thanks in advance for the replies.
Need more info.
Since you're in MS, you shouldn't have to heat in TOO cold temps. That makes things easier.
What's your heat source? If it's UNVENTED gas (propane or natural gas) that's a big part of your problem. UNVENTED gas heaters...and any kind of unvented heater....introduces a TON of moisture into the air. This moisture rises with the heat. Being a vapor, the moisture moves past the insulation (fiberglass?) and condenses on the cold roof. It then drips back down.
You first need to reduce the moisture level in your shop. You then need to insulate the metal to push the condensation point farther from the metal. You then need a vapor barrier to prevent the moisture from reaching the metal in the first place.
There are several ways to tackle this. None of them are cheap.....sorry to break it to you! First thing is to first make sure that you aren't putting excess moisture back into the shop. Then, you have to PROPERLY insulate the ceiling.
The easiest way to fix it would be to spray foam the ceiling with at least 2 inches of closed cell foam. But....it's gonna be $$$$. Then, reduce the moisture content in the air. The advantage of the foam is that it will be a lot cooler in your hot summers there in MS.
If you can post pics, we can make better recommendations....and we love pics!!