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Hi Folks, Just wanted to share an important update on my search ofperfect sleep through mattress surgery. 1) The cotton blanket I was using in place of expensive cover like St. Dormier isnt working. It stiffens the top layer (memory foam 4 lb) so much that it negates the conformative shaping quality and value provided by mem foam. It is my most critical layer.
2) My nearly perfect for me combo of (top to bottom) 1 inch 4 lb eco green memory foam (overstock.com), 2 x 1 inch 20 ILD latex foambymail.com, 1 inch of supersoft poly foam from foamdistributing.com on top of Serta Perfect Sleeper Auburn Firm (springs only, cut off the top and took out the 3 foam layers)... was temporarily: Made unsleepably, uncomfortably firm... by changing out one, one inch bottom layer, 3 inches down from the top!!!!!!! Just for experiment, I swapped a 36 HD (firm, the supersoft poly ( this is about 20 ILD and I use it to protect the real latex layers from the springs) ... with the 36 HD poly. That was the 4th inch down from the top of my stack... and made the bed HUGELY MORE FIRM. I CANNOT OVERSTATE THIS. To understand, as an engineer, why, I took off the top three layers and sat on just the 36 HD (I believe they call it this to alert you that it is approx. 36 ILD). It was pretty hard. The springs did not bend. I then took off the HD 36... and sat on the springs. Surprise, they actually bent under my weight and conformed to the pressure of my sitting on it . The 36 HD, only one inch... was as if I had placed a piece of plywood on the springs... and completely negated their bending ability! So everyone "building" a DIY stack mattress beware: those firm layers... even way down... will be affecting the feel and firmness of your mattress substantially. This is for sure the reason why Sandman and I find that putting a comfort layer on surgically opened mattress springs preferable to a full latex or poly foam "stack". Good luck to all in finding something that works.
shovel99 Paul |
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I found that the 4lb mem-cool flattened out too much for me. You will probably find that less of an issue with the 5lb Sensus, so it may work for you. Pretty much all memory foams are going to let you sink in more as it warms up. I don't like the feel of being in a crater that much, so that may be part of why I like 1" of latex over the memory foam. Also, the memory foam will not heat up as much that way, so I seems to keep the support a bit better. Plus, having as much wool on top as I do probably keeps it from heating up as much as well. So, I have found with enough latex foam, I prefer only 1" of memory foam in the mix. That provides enough softness and body molding comfort without forming too much of a crater. With all latex, I tended to feel too much pressure on my hip bone. I have not been bothered by that with my current configuration. It is possible that with the right combination of latex I could have alleviated that problem as well, but at this point I am pretty tired of making changes. I have found that I can go with 2" of memory foam over the old fashion type of innersprings. That is what I used on my old Sealy. Over the holidays I slept on my fathers bed, which is an old style type of flippable innerspring with little (or no?) foam on top. The springs were reasonably soft, but still supportive. It had a box spring with real springs as well. A few years ago I sent him a 2" Costco memory foam topper which was added on top. That combination of a simple innerspring + 2" of decent memory foam was an oaky combination for me. I would wake up in a bit of a crater, but not too much to really bother me. Probably because the springs kept the same level of support and there was no real other foam to sink in to. If I was start over, I would try to get springs that conformed a bit more too my body, and would then use less foam. There are so many interlocked Sealy coils in mine, that it too firm for me without about 5" of foam. |