Guys,
Last year my newly built perm was pulled out on the ice. I used it several times, but the condensation got to be a problem, especially with trekr200 in it. I built it very air tight. How do the rest of you keep the moisture in check? Other than keeping the door and a window cracked a hair, do you have any suggestions? Vents in the wall/ceiling? Fans? Anything else?
I’m afraid all the work I have into it will come to an abrupt and moldy end.
Ideas guys?
Don
Vent’s on each end…. about 6″ down from the ceiling 
Put closeable vents in the middle of each side wall. open the ones that are on the down wind walls.
you WANT a CONSTANT supply of fresh air into the house.
THEN you heat it.
A cold air feed to your heating unit is wise also.
CO2 will kill you as fast as thin ice…
Building too tight is a common issue. Yours is easily solvable.
I always thought that installing a bathroom ceiling fan/vent over the stove was a good idea. Get all that cooking heat/moisture out of the house. Would help at any time I suppose.
I think the biggest important factor in venting a perm house,
like Stu pointed out:
IS to keep the CO at a non-dangerous level,
Jack
Be careful with a bath exhaust fan above your stove, they are not made to handle heat and if you put in too large of a fan it could cause the draft to reverse on the stove bringing smoke and co2 into your shack. I would recommend putting the fan opposite the stove to reduce that from happening, shacks are small enough removing the moist air and what ever else needs to be vented out should not be a problem.
Are you talking about a hair perm? 
I know better, but I had to.
What are you using to heat the house. unvented heaters give off a ton of moister.
STU IS ABSOLUTELY CORRECT YOU NEED A FRESH SUPPLY OR AIR OR YOU WILL GET CARBON MONOXIDE POISONING. GREAT POINT STU
Still interested in other creative venting options…
It’s not clear how you heat this shack, but if you built it that air tight you have to have a vented heater of some kind. Don’t even consider a ventless heater, they create a lot of moisture into the air.
I ran a ventless in a less than air tight shack for years with no problem, but when I shut the heat off and there was moisture in the air….the inside turned to 1/2″ frost on everything.
Fans work wonders. I’ve used a minimum of 2 fans for a shack from 10-12′ in length. The fans dry the air very well, even in the old ventless shack. I can run a couple fans for several days on a deep cycle battery (I often heat the house to 50 degrees most of the winter while I’m not there).
Putting a vented heater in is not much work, and there are good cheaper ones out there for a few hundred bucks (Menards). In fact my friend and I had to install a new vented heater on the lake last year in sub-zero temps with minimal tools to save a fishing trip. 
I can’t help it that I am a heavy breather.
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