I have a Building Cake coming up in a week. It will be two 8" square cakes totalling about 8" in height.

Should the top cake be on a cake board or placed directly on the bottom cake? What kind of support system would be required?

I'm a hobby baker and this is the first time I'm doing a cake so high. Any help would be sincerely appreciated.

I have made a cake 11 inches tall and 10 inch wide... It depends on your cake. If your cake is sturdy or just regular cake like yellow, white or chocolate, then no need for board under each layer, just the very bottom.

But make sure put dowels from the top all thru the layers, maybe four or three, one in the middle and the rest towards the edge on the sides.

good luck

Same setup as any regular tiered cake. Board under the top tier and some sort of vertical support inside the bottom cake holding up the top one.

General rule of thumb is to have a cake board and dowels for every 4 inches of cake. Consider your cake, 2 independent cakes (1 8 inch square 4 inch high on it's own cake board) . You would place dowels into that cake, then another 8 inch cake on it's own cake board also 4 inches high.

I have made one exception to this and htat is when I do a 6 inch square because that is only 3 layers of cake. And I wasn't stacking anything on top of it.

Thanks for yor responses.

I agree with sillywabbitz. A good rule of thumb is to use supports for every 4 inches you go up in heighth.