Re: Newbie needing help - overheating
No, it might rain. The 1/4 inch all around should be fine. Make sure you have empty top bars (3 or 4?) for them to festoon on. How big is your entry? That can/will limit fresh air entry, if you are using drilled holes for entry drill more IMO.
Here is what Mr. Bush has to say about TBH venting. He is a much, much better guide than I.
"Question: On Langstroth hives you often have a top and bottom vent to get sufficient ventilation. Should I provide cross ventilation in my TBH?
Answer: Bees seem to have more trouble ventilating a vertical hive with no vent at the top. They have to force dry air (which wants to go down) up to the top and hot moist air at the top (which wants to go up), back down and out the bottom. It's sort of like walking 20 miles to school, uphill both ways. So a top vent or top entrance in a vertical hive seems to be very helpful as it allows the hot moist air out the top which sucks the dry air in the bottom. With a horizontal hive, this is not an issue. They just move the air in a circular fashion in one side and back out the other side and out the door. Sort of like a nice level walk with no hills. This seems to work well. With cross ventilation (such as a front and back vent or entrance) the wind may blow through the hive and that may be a bad thing."
So, He seems to be saying that your entry should be large enough to allow the bees to move the air in and out to cool the hive. How big is enough? Mine was 3/4" high and 6" wide. I have since moved them into a Lang as my 5 hives are Langs and I did not want the odd hive to work. You may not have a heat problem, they may just need more space in the hive, eg, more bars. Don't add into the brood nest, add at the end of your present bars so as to extend the stack.
Last edited by julysun; 07-14-2013 at 08:53 PM.
Julysun elevation 23 feet. 4 Hives, 2 years.