Condensation question ?

[Arky217]

Does anyone have a garage or storage building that has metal siding
directly over the studs ?

If so, do you ever get condensation on the inside of the metal siding ?

I'm building a small garage. I will have plywood and metal on the roof.
But on the walls, I'm considering just diagonal braces on the inside
and metal directly over the studs.

The garage will not be insulated or heated/cooled; just a place to
park one vehicle and a small workshop area.

On this foggy morning, I noticed that I had condensation on the
inner surfaces of not only the ceiling but also the walls of my carport.

Now I'm wondering if the inside walls of the garage will do the
same even though, unlike the carport, it will be closed in.

However, I just remembered that I previously had an uninsulated, unheated garage with 2 uninsulated steel garage doors and I never had condensation on the inside of the garage doors.

Also, if it matters, the slab for the garage has 6 mil poly under it and sealer on top.

Another thing; I had not planned on any venting since the inside will be all open (no ceiling, no insulation).
Just a ridge vent might help let out some hot air under the roof when I'm working inside in the summer with the garage door open, but if I put in a ridge vent or ridge vent/soffit vents, would that contribute to the possibility of wall condensation in the winter ?

What think ye ?

I just had another thought on this.
I could just sheath under the metal with osb; that would cost about $215.
If I did use osb, I probably should cover it with Tyvek; another $112.

But what if I just covered the studs with Tyvek.
Would that help prevent wall condensation and
if there were any condensation between the metal
and the Tyvek, wouldn't it just drain to the bottem ?


Arky

 

[Falcon67]

Before I insulated and covered the stud bays, my HardiPanel siding would show condensate on the inside after a rather abrupt change in temperature. I haven't worried about it since insulation.

FWIW - I'll share what was done in the "old days" LOL. What my dad and grandad did on buildings, houses, shops, etc - use 15 lb roofing felt under the siding.

 

[pjboy]

im going to sheath than housewrap sides ,and sheath roof osb then 30# felt then metal with ridge vent if that helps. ilike your thought process , but maybe a few extra bucks an d forget about it.

 

[Arky217]

Thanks for the replies,

I'm wondering mainly now about whether or not I should put in ridge/soffit vents. For a detached, uninsulated, open (no ceiling, no inner walls) garage,
would you vent it or leave it closed up ?

Arky

 

[pjboy]

id vent it you know why not, put the ridge vent in then you can do the soffit venting later, that ridge vent will keep air moving ,relatively in expensive, tmtcents

 

[pjboy]

you may change your mind and want to insulate or close it up?down the road who knows?

 

[NaturalLivingMan86]

Why not just vent and vapor barrier

 

[WarDamnEagle]

Before I insulated and covered the stud bays, my HardiPanel siding would show condensate on the inside after a rather abrupt change in temperature.

Concrete has thermal mass so it retains temperature when the temperature changes. That is why you had condensation.

OP: Metal siding has high conductivity so when the temperature changes it will change temperature very quickly as well. I don't think you'll have any issue unless you put something inside with a lot of moisture.