[Michael Bush]

I have not seen a lot of ventilation issues with horizontal hives. There is no hieght to really create a chimney effect but it also doesn't seem to be necessary. With a tall hive and no chimney effect they have to move all the hot moist air from the top to the bottom against the natural tendency for it to rise. This is not an issue in a horizontal hive.

 

[Stone]

Michael,
Humidity wreaked havoc in my first two TBHs this past winter - probably because I made them too tight. Lots of green and black mold and I estimate about half of my colony dead on the floor covered by mold when I opened it up. The other hive I have - which was constructed a little differently with a front entrance - fared badly but not as bad as this one.

I have side a entrance in this one, a la the style of Phil Chandler. So I decided to drill 3 holes on the same side but up toward the top - about 1 1/2 inches down to help relieve the humidity and ventilate the hive better - respecting the principle of a simple convection current. What have you been doing to promote good ventilation?

That idea in my first post seemed like a good idea so I thought I'd ask for some input.

 

[Sam-Smith]

Michael,
Humidity wreaked havoc in my first two TBHs this past winter - probably because I made them too tight. Lots of green and black mold and I estimate about half of my colony dead on the floor covered by mold when I opened it up. The other hive I have - which was constructed a little differently with a front entrance - fared badly but not as bad as this one.

I have side a entrance in this one, a la the style of Phil Chandler. So I decided to drill 3 holes on the same side but up toward the top - about 1 1/2 inches down to help relieve the humidity and ventilate the hive better - respecting the principle of a simple convection current. What have you been doing to promote good ventilation?

That idea in my first post seemed like a good idea so I thought I'd ask for some input.

I had the same problem this winter with my hives, so I added some holes to the floor and moved the entrance to the top at one end. The entrances seem to be exhausting warm moist air a lot better now as far as I can tell.

 

[Michael Bush]

I have only a top entrance on mine, which lets the moisture out, and usually put some styrofoam on the lid, which cuts down on the condensation. This is sufficient in my climate. I can't say for yours, but I think a top entrance makes a world of difference as does the insulated lid. I haven't found anything else that helpful.

 

[Stone]

Michael,
Good point. Now that I have the holes on top intended for ventilation, the bees could use these for entrances too. Let's see how this progresses.