Hi Vicky,
[quote] he uses 1.6 or 1.8 lb polyurethane foam. Didn’t ask how many inches. Would this be acceptable? You had posted elsewhere “Never buy a mattress with more than around an inch or so of lower density polyfoam (less than 1.8 lbs or so in one sided or 1.5 lbs in two sided)” which sounds like this might be acceptable?
Just trying to weed out the “weak link”.[/quote]
As you can see in the quality/durability guidelines here … their specs are above the minimums I would suggest and would be fine for a two sided mattress (where I would use 1.5 lb polyfoam as a minimum density guideline).
While they are certainly not as easy to find … there are still some manufacturers that make mattresses that don’t use any foam at all. Some of them are listed in post #4 here and you may also find some “old style” local manufacturers in some areas of the country that still make them as well.
Phoenix