Hi suziQ,
Welcome back.
For someone in a higher BMI range, the key will be finding componentry that will be of appropriate quality for your specific situation, which will then give you the best chance at have a successful comfort life, so I would always make sure that you find out the information listed here so you can compare the quality of the materials and components. Those in a higher BMI range want to be especially prudent in the choice of their components. For those in a higher BMI range, there is more information about selecting a mattress in the durability guidelines here. Specifically, if your BMI is 30 or higher:
For the polyfoam core I would look for 2.0 lb per cubic foot density or higher.
All latex would generally be a durable material, but you may wish to avoid something “ultra plush” to assist with a higher BMI and also to make repositioning in bed easier.
Post #3 here has more information and suggestions about heavier weights that is worth reading.
You’d want to find out the ILD (softness) of the Talalay latex in the upper layer of the mattress you’re considering, and then you’d want to know the density of the polyfoam being used in the 5" polyfoam core.
One concern I would have with a higher BMI would be to make sure that there is enough comfort material overall, as that can be more adaptable for heavier weights and multiple sleeping positions. It will compress from softer to firmer more gradually which means that there is more “range” of compression without the mattress becoming too firm for heavier weights (or parts of the body). I’d have a concern if the mattress you’re considering would have enough material overall for your husband, so you’d definitely want him to test the item in person with you.
I believe you are referring to Dormir Bed & Foam in Calgary. They offer a wide range of foams, and you’d want to check with them about the specifics of any mattress (such as the Latex Dream) you’re considering. They should be able to provide you very detailed information, as they are very familiar with latex and polyfoam, and I’d seek their advice for something appropriate for someone in a higher BMI range. They don’t list the specifications of the Latex Dream on their web site. If you find out the specifications and post them back here I’ll be happy to comment upon them.
It is true that is can be more difficult for people to reposition on products using memory foam in the uppermost layers, as memory foam has very low resilience (rebound or "springiness), and there’s really not much you can do to change that, as it is the nature of almost all memory foam to “behave” in that manner. Latex and firmer high-density and high-resiliency polyfoam will display better resilience and will be much easier for someone to reposition upon.
Latex is available in many different levels of plushness, so it sounds as if you tried something that overall used layers that were too firm for your particular preference. The fact that the all-latex mattress you tested was too firm wasn’t because it was an “all-latex” configuration, but because the latex that was being used was using latex that was firmer than what you desire and/or in a layering combination that was inappropriate for your preference.
I’m sorry, but I don’t understand what you’re stating/asking here. If you concern is with placing a latex topper on top of a latex mattress or one that uses a latex/polyfoam combination, that is actually something that is common, but it would come down to your own personal comfort preference if the combination met your needs. If you’re considering placing the latex on top of your memory foam mattress, it will modify the surface comfort and conformation a bit, but more than likely if it I a very plush topper it will still be difficult for your husband to reposition.
Tempurpedic mattresses are generally built using polyfoam base support cores (some are now using innersprings) and then on top of that are other polyfoam and memory foam layers.
Phoenix