Will a 1/2 inch foam board be thick enough to support the weight of a
5-tiered, stacked 6-8-10-12 & 14 inch wedding cake? I've never done one with that many tiers and need advice from some of you that have done this
before. Thanks in advance for your help.

That's a very heavy cake. I'd definitely suggest either doubling or tripling the bottom board to at least 1"-1.5".

Rae

With a cake of that size, I'd think you'd want to use a masonite board. That thing is going to be heavy!

Thanks ceshell, so how thick do you think the masonite board should be? You're so right...it's going to weigh a ton and I'm already getting nervous thinking about delivery!

If you buy one for cakes rather than having one cut yourself at the hardware store, at that size they come standard @ 1/4- 1/2". Honestly I am not sure if you need 1/2" or if 1/4" is sufficient - hopefully someone else will chime in or else you can search the forums as I know I have seen it discussed numerous times.

Are you stacking all five tiers and delivering it stacked, or are all the tiers stacked after you get to the venue? That would make a huge difference in the bottom board. If they are all stacked during delivery, then I would definately do a double or triple thickness. You wouldn't have to do that if they were assembled at the delivery location.

Personally, I would never try to transport a five tier cake all stacked. That's definately asking for trouble. And it dosen't take that long to assemble the tiers after they are delivered.

I planned on delivering it stacked because I'm using the SPS system that Leah recommends. I don't like trying to finish up a cake on site because there will be so much going on and people watching.....makes me nervous.