Hello,
First off, many thanks for all the excellent information on your site. I’m pretty much buying a mattress in a vacuum (southeastern Michigan, with almost no shopping options except furniture stores and major manufacturers), so your site has been invaluable.
I’m still a little confused about foundations, however. I’ve read your recommendations post, but still have a few questions:
1 - What do you mean when you say “flexible” and “tension adjustable” slats? I think flexible are the slightly curved ones, but am not sure if that’s the same as tension adjustable.
2 - When you say the slats should be 3" apart for latex mattresses, do you mean 3" of space between them, or 3" on centers?
3 - You recommend flat slats rather than a box spring or curved slats, but when I tried latex mattresses at Ikea, they had the same mattress (their Sultan Edsele) on both a box spring and on slats, and it felt very different on each. The one on the slats was very hard. Do you think that would be the case with a layered mattress like the ISleep EZ 10000 as well?
Again, many many thanks.