Metal corrugated roof! Ugh...

[Mybackyardpeepers]

I can’t wait to see the next commercial for flex seal. Once the guy gets out of his no bottom boat he will walk over to his flex sealed chicken coop and say Look “poop doesn’t even stick to it”

Hey I should contact them, you may be onto something lol!

 

[aart]

I can’t wait to see the next commercial for flex seal. Once the guy gets out of his no bottom boat he will walk over to his flex sealed chicken coop and say Look “poop doesn’t even stick to it”

 

[EggWalrus]

Do you think spraying the flex seal on the metal then putting those up could work?

If the roof had a proper pitch, any humidity condensing on the underside should flow down and out of the coop, and not be dripping inside.
Pics not showing up for some reason!

 

[Shezadandy]

I have this same issue in my pole barn AND open covered run... NO amount of ventilation will fix this issue. And I always mention when I see folks intending to use metal roofing.

Research some more before next year... I believe tar paper might be adequate without plywood. I will be doing the same thing in the coming seasons, as it was here when we bought the place. And screws that have gaskets should be placed on the hill not the valleys of the roofing. Definitely considering the foam sheets... as insulation WOULD stop the condensation... that is in my experience caused by a difference in indoor and outdoor temps... especially when the sun is coming up on cold mornings. My pole barn does this even with no animals in it.

Thanks for sharing!

We've got metal on our animal buildings, though they are smaller sheds like the OP's building - here in the Pacific NW and we don't have the issue. Then again, we installed plywood first, then installed ice/water shield made for use with metal and/or ceramic tile roofs-- on the ENTIRE surface- installed a ridge vent the whole length- and plenty of windows - no problems in any weather.

 

[twendt]

So sorry you're having issues, I put my metal roof over OSB and tar paper and have had no issue with our Wisconsin winters, the 4 walls of my coop are insulated.

 

[EggWalrus]

Finally seeing the pics!
Your problem is you have nearly ZERO ventilation! That little window and the pop door isn't even close to enough. Those little 2" holes aren't helping either. It would be good to cut a couple of 6"x24" (or however many inches you have between studs) and cover them with hardware cloth. Put a few of these up high within a few inches of the roof. Put a couple of them on the opposite well a few inches above the floor. If you have no eaves, and you're worried about rain/snow coming in, build a little plastic or metal louver for each vent.
Just like a glass of iced soda, condensation will form on the warm outside of the glass. But with an insulated coop without enough ventilation, that metal roof is gonna sweat on the warm side, the inside of the coop. Open up some ventilation so that the inside and outside temps are about the same and the humidity is not greater on the inside than the outside. That, will solve you problem without a bunch more insulation or any flexible spray caulking in a can.
Maybe @aart can explain it better. He's good like that! It's about keeping interior humidity/temps within a few percentage points of outside.

 

[Kat2141]

Thank you!! I am for sure doing the styrofoam sheets and thanks for the sealing the joints of the foam!!

The Styrofoam sheets should make a world of difference. We had an all steel horse trailer that we made a camping area in the front half. We found that it dripped all over really bad. We put the foam insulation in between the steel braces. We didn't have any more dripping after that. We did also dress it up with the panels that are for bathroom type areas. But still didn't see water damage on that afterward either. We had the insulation wedged in up against the steel and then an air space between the insulation and the panels. Good luck.

 

[EggWalrus]

The Styrofoam sheets should make a world of difference. We had an all steel horse trailer that we made a camping area in the front half. We found that it dripped all over really bad. We put the foam insulation in between the steel braces. We didn't have any more dripping after that. We did also dress it up with the panels that are for bathroom type areas. But still didn't see water damage on that afterward either. We had the insulation wedged in up against the steel and then an air space between the insulation and the panels. Good luck.

The insulated panels act like a barrier, the condensation was still there, but it just ran across the top/behind the foam boards where you couldn't see it till it exit the trailer.
https://www.doityourself.com/stry/can-rigid-foam-insulation-use-cause-moisture-problems

Foam boards can be good in certain applications but with the ventilation required for chickens and the changing humidity, any kind of insulation can possibly make things worse.

 

[aart]

Maybe @aart can explain it better. It's about keeping interior humidity/temps within a few percentage points of outside.

Ventilation is not really the issue here, tho it maybe contributing.

Not how to explain it simply....other than:
Condensation will form on a cold surface exposed to warmer humid air.
Metal roofing, with no wood or insulation under it, is especially conducive to this happening.

Michigan(where both OP and I live) can be very humid,
especially since we recently got 2' of snow on unfrozen ground followed by warmer temps.

 

[Mybackyardpeepers]

The Styrofoam sheets should make a world of difference. We had an all steel horse trailer that we made a camping area in the front half. We found that it dripped all over really bad. We put the foam insulation in between the steel braces. We didn't have any more dripping after that. We did also dress it up with the panels that are for bathroom type areas. But still didn't see water damage on that afterward either. We had the insulation wedged in up against the steel and then an air space between the insulation and the panels. Good luck.

Awesome, thanks for sharing your experience. Going out soon to check things out, only good part is it is actually 50 out currently but raining.