What determines the firmness of latex ??

Hi Phoenix,

Can you explain what dictates the firmness of latex? The two primary means of production are talalay and dunlop, and each will yield a different compressive resistance, but to keep it simple, what I’m really asking is how does a manufacturer cause one piece of latex to be “soft” and another “extra firm” ? I can imagine the size and quantity of pinholes can come into play, but I’m guessing there must also be some kind of density control as well. So the same 6" thick piece of latex is soft one time and then extra firm the next depending on something about the process. Asked another way, how can a manufacturer alter the density while still retaining 100% natural (so to speaK) composition? I can imagine how maybe talalay might allow for this by mere nature of the process, but dunlop is more of a simple pour… so how can density be controlled in a wide range of soft to extra firm??


Hi Sonic,

The ILD in Talalay is controlled primarily through density. Because it is made in a vacuum … they can simply add more or less material. For example … talalay can go from a density of about 2.5 lbs in the softest versions to 5 lbs.in the firmest versions.

Dunlop is controlled by the size, shape, and number of the pincores and through compounding and controlling the size of the cells but its a less accurate process and doesn’t come in as soft a version as talalay or as many firmness choices.


Hi Sonic!

Did you get your SleepEZ yet? How’s it going?

[quote=“SleeplessinDallas” post=1594]Hi Sonic!

Did you get your SleepEZ yet? How’s it going?[/quote]

So far so good, am definitely within the ballpark! But I’ve only slept on the bed a few nights so too early to say much yet. I will post the story about my experience from start-to-finish in probably a month once I’ve had time to get everything ironed around. Next step is getting a proper foundation so I’m not sleeping on the floor. :stuck_out_tongue:

BTW, check your Private Messages please.

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