your last comment raises a question
when starting a new hive, when the first box get's full, do you add the next box above or below the original?
Our climate is quite cold. If you put 100 % more space over brood, bees have difficulties to keep brood warm. Often they destroy the lowest larvas.
When I put empty box below, brood temperature will not disturb. Bees occupy their new space as soon as they are able. Think the nature...they enlarge downwards.
When hive is 2- 3 box and honey is coming in, I put medium super on top. If it is cold first summer, I put third box below or in the middle.
After that hives are so strong I put supers on top.
Just now our temperature is here 59F.