Preventing moisture - in wall cabinet

[xrdad]

If I were to build an in wall cabinet, in an outside wall, what can I do to prevent moisture from building up inside it?

Will running vapour barrier behind it (cabinet) and maybe some board insulation prevent any concerns?

I suspect the cabinet would be a trap for moisture and condensation if it comes into contact with the cold on the other side of the wall. Or will the vapour barrier keep the cabinet from getting wet, but force water to build up between the sheathing/brick and the barrier itself?

Ideas?

 

[Mattlt]

A light bulb inside the cabinet to warm it up / dry it out?

 

[kv501]

If I were to build an in wall cabinet, in an outside wall, what can I do to prevent moisture from building up inside it?

Will running vapour barrier behind it (cabinet) and maybe some board insulation prevent any concerns?

I suspect the cabinet would be a trap for moisture and condensation if it comes into contact with the cold on the other side of the wall. Or will the vapour barrier keep the cabinet from getting wet, but force water to build up between the sheathing/brick and the barrier itself?

Ideas?

The vapor barrier isn't going to keep moisture out. That is going to depend on the humidity in the air. I would still put it behind the box like anything else, but that isn't going to stop it.

I have a cabinet like you are describing in Iowa where the temps can range from 105 degrees and 90% humidity, to 30 below zero and I have never had a problem with condensation in it. I try to keep the garage at least 45 during the winter when I'm not in there, and 60 or so when I am working. I think you are going to be fine unless it has sensitive electronics in it. If you do need a dehumidifier, I have used these for years in my basement for a gun safe and they work great.

 

[kbs2244]

Water vapor (humidity) will go from warm to cold.
Moisture is liquid water that can come from condensed vapor.
The bathroom windows after a shower is a prime example.
The solution is the same.
Ventilation.
Build your cabinet so you get air movement.
This can be as simple as louvered doors.

 

[buddyboy]

I agree with what others have said.

to add, you should have a thermal break between the cold-warm areas.

when warm air hits cold surface you'll get condensation.

foam insulation is your friend whether it's on a cold beer in the summertime or a warm cabinet in the winter.

If the cabinet air is warmer than the stuff inside it or the surface, you'll get condensation.

 

[vntperformance]

Solution: Ceiling fan to move the air around in the garage.

 

[xrdad]

Thanks guys..

Sounds like this can be done.
Moving forward and will post pics when complete.