Trying to figure out what is wrong with our latex mattress

Hi diamnodshopper,

You have a very long posts with quite a few questions, so I’m going to do my best to be direct and concise with my responses.

That could have been a possibility. It doesn’t sound like you did a rearrangement with the firmer Dunlop piece on top or even tried flipping over the Dunlop core to see if there was perhaps an issue there, which would have been interesting to learn about. There is some information about the many different symptoms that people may experience on a mattress and some of the most common causes behind them in post #2 here that may be helpful as well.

Even latex (and your covering) will soften slightly over time, but larger sagging would be less common and the largest constant here is the core, which I would again be curious about.

Unfortunately you didn’t provide a reference for the amount of sag, as a small amount could be normal as would some softening in the area of where the latex was used. You mention you think the core is fine, but my curiosity is still raised here, as that has been the one constant and you’re still complaining about softness in the middle, and it would be odd for replacement layers to have a similar defect (it’s odd for latex to have defects in general). But that’s again just a curious thought I have. I can’t tell from your photo if your Dunlop piece was form a 3" mold or was slit, but not having the pincores on the bottom is not a sign of a defect. Some pieces are produced as such.

That was nice of them to exchange the layers. What you have sounds like Talalay Global natural Talalay, with the N2 being in the 20-25 ILD range and the N4 being in the 30-35 ILD range.

I could be that you simply don’t have an affinity for latex, or at least in the combinations that you’ve created. You’d also want to look at your pillow choice independent of the mattress, as that can sometimes have an impact upon neck/upper back issues.

All foams “age” a bit over time, and this can be influenced by the cover used, the mattress pad and sheets placed over the mattress, the amount of UV exposure, the amount of anti-oxidants used in the product and the humidity/airflow around the mattress itself and any forced air by the mattress, amongst other things. Some “hardening” on the outer edges of the latex is normal and to be expected.

Unless you had received the one piece of Talalay that was cut from the core with the “testing” sticker on it then this would be normal. TG doesn’t provide individual stickers on each slit piece like other brands might do (such as Latex Green).

An offset glue seam is normal with Talalay, as most molds are twin extra long.

It is normal for a cover to fit snugly, but latex layers are also quite flexible and are easily manipulated with an “accordion-style wave” to make them a bit smaller in dimension.

This would actually be mostly from your cover stretching a bit and everything “settling in” within the cover.

All of the components within a mattress contribute to the overall comfort, including the covering and whatever foundation was used, and “similar” components aren’t the “same” components, so a comparison like this wouldn’t be the best indicator of “bounciness”.

I don’t know if anything is actually wrong with your bed, or if there could possibly be an issue with the core, of if you don’t have an affinity for latex, or if it is the combination of types of latex and ILDs that you have chosen. Unfortunately, I can’t determine that via the forum (I wish I could for you!).

It’s part of your overall comfort, but not an alignment issue probably. This tends to be the deeper support layers. You could always test your theory by removing the top cover and sleeping upon the mattress with just a mattress pad and fitted sheet for a few nights.

With foams, this is usually determined by the amount of depression. You’d want to speak to your supplier for their measurements and guidelines for what they determine a defect.

As I mentioned above, there are many factors that figure into this, and some of that can be considered normal, and there are many variables that play into that.

Yes and yes. You can refer to my answer just a little earlier in this reply.

No. Unless they were labelled, you’d be relying upon the supplier with whom you’re dealing.

All types of latex feel different, with Dunlop not feeling quite a buoyant as Talalay, but all of the layers of a product, including the covering, contribute to the overall feel. All latex will have good resilience as compared to polyfoam, but it will vary with ILD and type of latex (and to a small extent the blend).

I know that’s a lot of answers, but you had a lot of questions. :lol: I hope that information is helpful.

Phoenix