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How much talalay latex should me in a mattress 30 Jun 2014 22:46 #1

  • Rnagel
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I am tying to buy a mattresses for my 3 year old daughter and 5 year old son. I have decided on all natural latex since I don't want all the chemicals in their mattress. I had decided on the Sherwood Harbor Lux Firm model, but after ready this website I am questioning if this is really a good mattress. The Sherwood website has PDF of the breakdown of the different layers in the bed. It seems 90 % or more of the bed is soy foam and a small amount talalay latex in between the top layers and bottom layers. How much talalay should be in a bed compared to the other layers? Should it be buried in the middle more located more in the top layers of the bed? Is the soy foam healthy? Is their a mattress you can recommend? I want a healthy, comfortable mattress that will last my kids for the next 15 years.

Thanks, rnagel

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How much talalay latex should me in a mattress 01 Jul 2014 09:25 #2

  • phoenix
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Hi Rnagel,

How much talalay should be in a bed compared to the other layers? Should it be buried in the middle more located more in the top layers of the bed?


There really isn't an answer to this except to say "enough" to make a meaningful difference that most people would feel and that achieved the design goals of the mattress. Having an inch or so of latex buried deep inside a mattress wouldn't make much difference for most people but having that same inch of latex as the top layer of a mattress would make a much bigger difference in some types of mattress designs. In general a couple of inches or more in the upper layers of a mattress closer to the top would be enough to make a difference in the feel and performance of a mattresses for most people but of course thicker layers of latex or an all latex mattress would have more of the benefits and overall "feel" of latex. This would be something like asking how much metal should be in a car relative to the other materials.

Is the soy foam healthy?


Soy foam is just regular polyfoam that has replaced a small part of the petrochemical polyols (one of the two main chemicals used to make polyfoam) with a soy based derivative. There is more about "so called" soy foams or other types of "biofoams" in post #2 here .

I think that deep, restful, restorative sleep is healthy but a mattress is just a means to that end so a mattress is only "healthy" to the degree that it contributes to high quality sleep. For that it needs to be a good match in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) and needs to use "safe" materials. There is more about the factors involved in healthy sleeping as it relates to a mattress in post #4 here .

I wouldn't consider any foam or mattress material to be "healthy" in the sense that it can help with specific health conditions but if polyfoam has been certified by CertiPur or other testing organizations which test for harmful substances and VOC's then most people would consider it to be "safe enough". There is more about "safe" materials in post #2 here and the posts it links to.

Is their a mattress you can recommend?


There are too many unknowns, variables, and personal preferences involved for anyone to recommend a specific mattress out of all the thousands that are available in the market but post #2 here includes links to most of the better forum topics about mattresses and children that include much more information about and sources for choosing a mattress for children.

I want a healthy, comfortable mattress that will last my kids for the next 15 years.


If you are looking for a mattress that will last for 15 years then you would need to use very durable materials in the comfort layers especially. It's also quite likely that when a child reaches their preteen and teenage years that their needs and preferences may change as their body develops and you may need to add a topper to their mattress to add additional pressure relief. A component mattress can also be worth considering since it allows you to replace or change individual layers in a mattress without having to replace the entire mattress if one layer softens or breaks down before the others of if their larger and more mature bodies need a different mattress than they did when they were younger.

Phoenix
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Last edit: by phoenix.

How much talalay latex should me in a mattress 01 Jul 2014 10:27 #3

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Hi Phoenix,

Thank you for the quick response. I thought I only needed to worry about CertiPur certification if I bought memory foam. Can Latex mattresses also be certipur-us certified? I saw this certification when beds are a combination of latex and memory foam. Should the soy foam in latex mattress also be certiPur certified?

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How much talalay latex should me in a mattress 01 Jul 2014 11:53 #4

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Hi Rnagel,

Can Latex mattresses also be certipur-us certified?


No ... latex would be certified either through Oeko-Tex or Eco-Institute which are both more stringent certifications than CertiPur. All the latex you are likely to encounter (Dunlop or Talalay and made with natural or synthetic rubber or a blend of the two) would all be certified and be a "safe" choice. There is more about the different types and blends of latex in post #6 here .

CertiPur certification would only apply to polyurethane foams which include regular polyfoam and memory foam including versions of both that include gel or that have replaced some of the petrochemical polyols with polyols that are derived from plant oils.

Should the soy foam in latex mattress also be certiPur certified?


I would use the same criteria for any "soy foam" in a mattress as regular polyfoam. They are just different versions of polyurethane foam. Most of the polyfoam made in North America is CertiPur certified so if the polyfoam (soy foam or otherwise) is made in North America I would treat it as "safe" unless you have a health condition (such as MCS) or other known sensitivity that indicated that what was safe for most people may not be the best choice for you. There are also some people who prefer to avoid any synthetic materials in their mattress for personal reasons regardless of whether they may be "safe" or not and would make their choices accordingly. If it comes from outside of North America (especially Asia or China) then I would definitely make sure it was CertiPur certified.

Phoenix
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Last edit: by phoenix.
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