Mattress Forum

Thank you murmur for the idea. I've checked on foamorder.com, but it seems there's no King or TwinXL 3" with ILD around 40 or 44. (My bed will be made of two TwinXL; One side for me; One side for my spouse (She'll be on a soft,medium, medium).

My experience with the FBM latex has been it's much firmer than I imagined from just reading about it. You're talking about making a long term investment so it would be worth your time to gauge what feels too soft or too firm in a latex mattress as this is always subjective.  Do you have a custom mattress shop nearby where you could try some latex beds?   It's difficult to compare with the store brand latex mattresses because constuction and materials seem to vary so much. The only store near us was an Original Mattress Factory that had a total of 2 latex mattresses to try.  

I don't believe your weight will significantly shorten the lifespan of all the latex layers (maybe you'll replace the top  layer of 20 ILD after 5 - 7 years) but it's critical to get a combination you find comfortable or you'll get rid of it long before it wears out.  I personally think 8 inches of latex is enough when properly configured.

Hum... No custom mattress shop around here.

SleepLikeADog wrote:

I don't think I could go wrong with 6" of firm as the base and 2" of soft for the topper, right? The base would be tought enough and the topper would provide comfort for my side sleeping.

Yes, and I think it will be reasonably firm.  I've got the FBM 2 inch "soft" topper over their 3 inch "medium" topper and a 5 inch poly base and it's borderline too firm.  But everybody on the forum has their own preference, it would be nice if you could try before you buy.