Hi Phoenix, I have some observations and wonder if you concur that this is what might be expected when comparing latex performance alone (or in a highly stretchable covering) to latex encased in a mattress encasement:
Thoughts/experience on a latex mattress base layer being encased in stiff fabric:
The base layer of my mattress is completely sewn inside an encasement of fabric. The base layer can not fully perform the way latex is capable of due to the encasement. Example, press down with hand, stiff fabric adapts fairly enough along with the latex, some hindrance of adaptiveness due to the fabric is noticeable. Now press down with a second hand about a foot apart and the first hand can feel the tug of the fabric lifting it up, plus a bridging effect between the two points is evident, such that the latex between the two points is not able to act independently but is pressed down with this bridge of fabric. When laying down (not even just laying on the base layer, but also laying on the mattress with the comfort layer of latex on it) this effect is noticeable such that when lying alone I sink in slightly but meaningfully less than when my wife lies down too. The base layer also should benefit from the extreme adaptability and supportiveness of latex, but the encasement hinders this. Since the latex cannot perform to its fullest due to the encasement, it seems to me it may just as well be some other material instead of latex since it cannot perform with the full ability it is capable of. I am tempted to cut the base layer out of the encasement to get the full latex performance I got the latex mattress for, although this would undoubtedly lead to a softer feel (as well as kill my warranty), and while it would unleash the characteristics of the latex, the added softness may be less comfortable than when encased (if it was found to be too soft the best option seems to me to then get a higher ILD base layer but such an exchange is an expensive option).
Same kind of effect is had with the top layer of latex when placed under a quilted layer of foam/wool/bamboo, the latex characteristics are significantly hindered. The feel of laying on the quilted layer over the latex is vastly different than what latex feels like when laying on it without a quilted layer, where the quilted layer greatly subtracts supportiveness, and pressure relieving characteristics of latex. Latex feels like being suspended, with tremendous pressure relief, where the quilted top lends a great deal of pressure to the feel, and feels quite saggy probably due to the poly foam in the quilting. The ability of the latex to adapt to each point of pressure independently is also greatly compromised at least partly due to the same bridging effect described above. Does not feel and perform like latex alone is capable of.
Do these descriptions mesh with your understanding?
When I removed the top quilted layer of foam/wool/bamboo and put the comfort latex layer inside a four way stretch fabric mattress cover I am sleeping faaarr better than I have in months (have had terrible mattresses recently - and this mattress when used with the quilted top was as bad and worse, without the quilted top it feels pretty nice), but I also paid a lot of money for latex performance that I am not fully benefiting from due to the base layer being sewn into the encasement.
Any thoughts on just how much latex performance characteristics would enhance the overall feel if I were to have a base layer not encased in a fabric that restricts its performance?