Join Date: Aug 2008
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jep - I just went through this whole ordeal for our C27 a few months ago. I made all new interior cushions from scratch - using 4" medium density upholstery foam (1034 was the number I think). So far they're holding up great. You just have to keep them dry from what I understand.
If I had it to do over, I would probably just order them from Catalina - or from a real sailboat upholstery shop that has the templates. I priced, through local upholstery shops, just covering the foam I'd already purchased and cut - and it was going to be several hundred more than what I could have bought the cushions for finished and ready from Catalina. The foam and labor prices will blow you away.
So, in the end, I probably saved 5 or 6 hundred bucks...but man was it a lot of work!
PS - Casio is right about the higher density being better and more expensive.