PU/Latex/Memory Foam Mattress
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Has anyone put together a mattress with PU base, latex in the middle, and memory foam on top? I was laying on a Simmons ComforPedic the other day with this configuration. It felt like Temperpedic support laying in it, but it didn’t have that hard feel when you roll over or sit on it – it actually had a little spring to it. When I was looking at it in a showroom, I was able to see some of the specs on the sheet the sales person was holding: Top layer: 4.5” 5.5lb memory foam – ILD unknown, but possibly 2 different foam ILDs (springs back faster than Temperpedic) Middle layer: 2" 24 ILD latex (said it was to dissipate heat) Bottom: 7" 30 ILD foam (I'm assuming it's PU, but I'm not sure???) From what I've been reading about foam lately, I thought a combination like this would be too soft, but it was really supportive. After laying in it for awhile, it did seem a lot cooler and more comfortable than a Temperpedic. The price for the above configuration was $4200. Any ideas on putting one together for a lot cheaper? |
Re: PU/Latex/Memory Foam Mattress
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steve2u wrote: When stacking all this foam, can I expect my finished thickness of the mattress to be less because of the weight of the upper layers of foam compressing the lower layers? Should I shoot for a 13" size to fit in a 12" case? No & No. |
Re: PU/Latex/Memory Foam Mattress
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What if I went with a 2" layer of latex instead of 1", would I want a higher ILD of 32 like FBM sells? I would think 2" of 20 ILD with a 3" Sensus topper may allow a little too much sinking in? I'm open to opinions on this since I've never slept on any of these layers. Maybe this configuration: 3" Sensus 2" Latex 32 ILD 5" 36 PU 2" 55 PU |
Re: PU/Latex/Memory Foam Mattress
| Steve, I wish I could help you. You may not believe this, but I've been racking my brains trying to design the perfect inexpensive memo/latex/PU mattress, and I am pretty much out of the market now (it's just been haunting me for some reason!) I wish FMB made a 25ILD or so, or that their 1" 20 and 32 didn't feel so much alike (see haysdb's experience with those.) Sensus is supposed to be pretty soft, yet supportive. I'd think about getting the cover after you've tried the first few layers you order - that way you have a choice of added thickness. |
Re: PU/Latex/Memory Foam Mattress
| I'll probably just start with the PU and go from there. I did find a forum last night on fatwallet.com that talks a lot about FBM poly - it sounds like the 36 ILD is pretty firm. Maybe I'll look somewhere other than FBM if I want to add latex. |
Re: PU/Latex/Memory Foam Mattress
| Why don't you try to get some samples of each kind of foam you are interested in? That would probably answer a lot of your questions about firmness. |
Re: PU/Latex/Memory Foam Mattress
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I have feeling that I could feel the foam all I want, but wouldn't have a good idea how it would work for me without laying on it. That's part of the reason I will possibly go with the 2.0 density. If it seems to work well for a few months, I'll upgrade it and use the old foam to make a couple dog beds and seat cushions for my POS office chair (my boss is cheap). It will only set me back $170 - seems like a small price to pay to figure out if foam will even work for me. I did receive this reply from Costco on my current mattress: We do guarantee your satisfaction 100% for the mattresses we sell. Costco.com is not able to advise or assist with a purchase made from the stores. Please contact the Costco Wholesale location nearest you for additional assistance with this return. Does anyone have more ideas for a foundation that's about the same thickness as a box spring. I'm assuming Costco will wan't the box springs back too. |
Re: PU/Latex/Memory Foam Mattress
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Good Lord...I changed my mind again. I'm going with 4" of LUX HQ, 3" of HD36 HQ, 3" Sensus...that's my final answer! This will give me 2" to play around with in a 12" cover. I'm not sure that the LUX will really come into play with when I get 8" of foam above it. I'm going to order it tonight before I have a chance to change my mind. Does anyone think a 2” layer of latex or eggcrate foam really helps to dissipate heat underneath the memory foam? Thanks again for your help and opinions. |
Re: PU/Latex/Memory Foam Mattress
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Steve2u, that sounds perfectly reasonable. 4" may be an inch more than you need for the bottom layer, but if you are targeting a 12" finished height, adding an inch of "filler" there makes sense. I have no idea whether the samples I have are representative or typical, but the ILD 34 "Firm" I have is pretty firm. Subjectively considerably more so than my ILD 38 (as tested) latex. I have a block of 3.0 lb ILD 26 labeled "medium firm" and I would not be afraid of using that in the middle of a mattress. The ILD 44 "Ex Firm" is bottom layer only stuff. My samples are large blocks about 8"x6"x4". If I place my palms in the two sides of the 44 and press them together with all my strength, I can compress the foam only about one inch. However, if you have left youself 2" to play with, going too firm on the support layers should not be a fatal decision. I have a 5.6" ILD 38 (as measured at the factory) talalay latex core, 1" of 32, and 1" of 20. This is very firm and plenty supportive for my 240 lbs. I am adding 2" of memory foam in place of one of the 1" layers of latex to try to soften things up a bit on top. My 3.0 lb foam is from FoamOnline. I also have small samples of V34, V44, V90 from FoamOrder. |
Re: PU/Latex/Memory Foam Mattress
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haysdb, which memo foam are you trying? I thought I'd throw out some foam mattress ideas I've had. how about: 2" Isoform 2" FBM 20 ILD latex 3" FBM 36 HQ PU 3" FBM LUX HQ PU or 2" FBM "5.5lb" (really 4lb) memo foam 1"FBM 20 ILD latex 1"FBM 32 ILD latex 4" FBM 36 HQ PU 2" FBM LUX HQ PU This message was modified Nov 13, 2007 by donw
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Re: PU/Latex/Memory Foam Mattress
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donw wrote: haysdb, which memo foam are you trying? I thought I'd throw out some foam mattress ideas I've had. how about: 2" Isoform 2" FBM 20 ILD latex 3" FBM 36 HQ PU 3" FBM LUX HQ PU or 2" FBM "5.5lb" (really 4lb) memo foam 1"FBM 20 ILD latex 1"FBM 32 ILD latex 4" FBM 36 HQ PU 2" FBM LUX HQ PU I'm considering the Isoform memory foam, but I am concerned at how firm it gets when the temperature drops. Because I will not be laying directly on the memory foam, I need a foam that is not temperature sensitive. Isoform becomes a brick after 10 minutes in the refrigerator. None of the other foams I have get that stiff when left in the FREEZER overnight. OTOH, the coolest my bedroom will ever get is about 64 degrees. I have been conditioned to believe that one measure of the "quality" of a memory foam is a fine and consistent cell structure. This is a characteristic of all of Foamex' foams, and their VPF (vacuum chamber) foams in particular. The other sample I have with a coarse cell structure is garbage. Turns out that's not fair as the Isoform has numerous large cells giving it a rather coarse texture, but it has a soft "hand" and a "luxurious" feel. Something I like about this foam is that you can crush the crap put of it, compress it into a little crushed wad, and it recovers fully within a few seconds without a mark. In fact it's like Foamex Venus in that regard. Other foams will show dents and creases for awhile before they fully recover their original state. I honestly don't know what this means or how important it is, but I think it tells me the Isoform is consistent and resilient. Caveat: This all presumes the samples I have are representative. There is no way for me to know what kind of batch to batch variations there are. This message was modified Nov 14, 2007 by haysdb
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