This is great, I was going to ask the same thing. I didn't know if the foam had enough air holes to drain, or absorb. Another question about the foam-- will heat cable penetrate the foam? I need the extra heating for WTF. Lights and domes aren't going to cut it. The foam is used for weatherization, so I'd imagine it will block the heat. Can I embed cable into the foam? Will it melt? Will it (cable)break and need replacing?

Sorry for jacking your thread. Just a foam issue. Hope you don't mind.