On 2-Dec-17, at 8:51 AM, Peter Prodger wrote:

> My practice is to add a small shim in mid March to give space for  
> protein patties.

I put a 2" rim on top of the brood box in the autumn to facilitate  
baggie feeding.  It stays on the hive until the winter wrap comes off  
in early May(usually), but is used earlier for syrup & pollen subst.  
or fondant in the winter if necessary

>  I have a top entrance on the south side and if I have a crack on  
> the north side I will get a draft. It takes a strong, well fed hive  
> to survive a draft if it is open all winter. I would differentiate  
> between passive ventilation and cross ventilation (drafts).

The general practice here is to do the same but the argument is that  
having top & bottom entrances on the same side eliminates the  
possibility of cross ventilation with wind as both have the same  
pressure(almost)

Bob Darrell
Caledon Ontario
Canada
44N80W

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