Hammocking in new latex mattress
Sep 13, 2007 2:49 PM
Joined: Sep 6, 2007
Points: 10
My wife and I have a new Gardner latex mattress, medium firmness. They're pretty close-lipped about construction and won't talk ILDs, but they do claim all-Talalay construction - though they spell it Telelay; inside the mattress casing their medium and firm are both 6" of a firmer latex under a 3" comfort layer of less firm latex. (Their plush and ultra plush have a 4" comfort layer and cost a little more.)

I'm a back-and-side sleeper. This mattress was supremely comfortable in the shop on both back and side over about fifteen minutes - no pressure points, cushy support; the firm mattress was a bit unyielding under shoulder and hip and I was a little worried about pressure points. But last night I slept on my back and woke feeling a bit like I was in a hammock. Particularly when I went to roll onto my side and found a bit of pressure against the bottom of my rib cage and the top of my thigh. As if they were on the edges of a hole that my butt had formed during the night. I had to get up an hour early; the mattress was quite warm and shaped for back sleeping, and I couldn't get comfortable in any other position (and felt a little hammocky in that position).

A week or so ago I pulled a muscle in my back at the gym, and now have a little occasional pain in a narrow stripe from the left of my spine out towards the left, and when I was trying to get comfortable on my side I felt pain there. My pelvis was trying to tip up because my legs were out of the hole my hip was in. I've been mostly sleeping on my side - actually on the front part of my side, so my weight isn't so much on my butt as on the fronts of my thighs, and I get better support without the hammocking.

I've read on this site in a few places that latex often sinks in a little bit after a few hours. I'm wondering if anyone can give details, because I only have a week in which to decide what to do. I think my options at this point only really include keeping this mattress and swapping it in for the firmer version - but will that be worse for me? What's behind the hammocking?

Maybe I should just lose weight, but that's not a good short-term solution. My wife loves this mattress.

What should we do?
Re: Hammocking in new latex mattress
Reply #1 Sep 13, 2007 4:58 PM
Location: Mequon, WI
Joined: Aug 30, 2007
Points: 363
I don't think latex sinks in a litlle bit after a few hours.  I think your muscles relax as you move to a deeper sleep.

Maybe pull out the top 3" comfort layer and replace that with a 2" (or less) comfort layer.  Then you have less room to hammock and you will be closer to your support layer(s).  However this might make side sleeping even less comfortable.  Although you would probably sleep better on your back.

I think ultimately you will have to choose between the two positions and adjust your mattress to one or the other.

If you wife loves the mattress, maybe you can just adjust your half of the bed.
Re: Hammocking in new latex mattress
Reply #2 Sep 13, 2007 5:09 PM
Joined: Aug 30, 2007
Points: 361
I DO think latex develops a softness to it overnight from body warmth and that combined with muscle relaxation leads to back pain for some.
Re: Hammocking in new latex mattress
Reply #3 Sep 13, 2007 9:36 PM
Joined: Sep 6, 2007
Points: 10
The back pain's from lying sideways in a hammock shape, which I can assure you does exist in the bed after six hours' lying in it. (I expect the pain to go away as the muscles knit, but the last time this happened that took a while.) On the spectrum of back pain this is definitely in the slight end.

This is not a disassemblable mattress; the layers are glued together. If we do go with the firmer mattress I suppose there's always the option of a topper down the road, but I'm concerned that some of the sag might be in the underlayer.

Can anyone shed some light on this? There are brief mentions of warmth and sagging in latex mattresses posted this forum (or the archived version thereof) by people who sound like they know whereof they speak. This is all rather new to me, though. If it weren't for this effect I'd say I love this mattress; it really feels lovely otherwise.
This message was modified Sep 13, 2007 by tcdonaghey
Re: Hammocking in new latex mattress
Reply #4 Sep 14, 2007 8:58 AM
Location: Mequon, WI
Joined: Aug 30, 2007
Points: 363
Well, I have slept on 4 different layers of latex over time, and none of them were heat sensitive.  None of them changed their feel after a number of hours on them.  However maybe my latex experience is an anomoly.

It certainly is possible that the supprt layers are contributing to the hammocking effect.  Without knowing ILDs, it is tough to say for sure.  Since it is glued together, that gives you no option of fixing the mattress.  Your next firm mattress will be glued together too, I'm guessing.

Maybe contact the manufacturer and tell them you are dissatisfied.  See what they have to say.  If you do, ask them what the ILDs are for that mattress and the firm version.  Also ask if it is 100% latex from top to bottom.

Good luck.
This message was modified Sep 14, 2007 by MequonJim
Re: Hammocking in new latex mattress
Reply #5 Sep 14, 2007 2:00 PM
Joined: Sep 6, 2007
Points: 10
Their response is "come in and try the firm - you're still under 30 days."

It's all latex, but they won't talk ILDs. I gather from this forum and a phone conversation that they used to customize latex mattresses, found it a hassle, and standardized on four specific arrangements.
Re: Hammocking in new latex mattress
Reply #6 Sep 14, 2007 2:24 PM
Joined: Aug 31, 2007
Points: 132
tcdonaghey wrote:
Their response is "come in and try the firm - you're still under 30 days."

It's all latex, but they won't talk ILDs. I gather from this forum and a phone conversation that they used to customize latex mattresses, found it a hassle, and standardized on four specific arrangements.


The ILDs are mentioned on their website, though I found the page via google not via their mess of a website.

They claim to use blended Talalay but by reading their website it looks like they don't know the difference between natural and blended Talalay.

Soft: 14ILD
Medium: 19ILD
Firm: 19ILD (not a typo, for some reason they use 19ILD for both Medium and Firm)
Extra Firm: 38ILD

Based on our experiences, the Extra Firm would be the minimum you would need to escape that hammock effect. For us, it still wasn't enough and we're going to the 44ILD blended shortly.
Re: Hammocking in new latex mattress
Reply #7 Sep 15, 2007 12:32 PM
Joined: Aug 31, 2007
Points: 793
The Gardner's Mattress configuration sounds way too soft and that is why you are uncomfortable.  It is always better to go firmer than you think since you can always soften up a mattress or get used to it firmer in my opinion.
Re: Hammocking in new latex mattress
Reply #8 Sep 15, 2007 1:10 PM
Joined: Aug 30, 2007
Points: 191
TC,Gardner is very easy about mattress exchanges, sometimes even going two-three times without any cost to the consumer (do a search on the old forum for Gardner Mattress), so take your time in your decision.I don't know which Gardner Mattress location you purchased from but I have been to the Newton store several times and have always been happy with their honesty, both with their products as well as the competition.As a matter of fact, when I was going through my latex mattress purchase, and was in doubt whether I should stick with my latex kit (purchased elsewhere) they didn't try to steer me to one of their mattresses- they offered sugestions on what to try and it was one of their mattress with 3-layers of 40ILD latex that gave me some ideas to try with my kit, which, ultimately led me to my current configuration.Matt Power from Gardner can custom build a latex mattress to your liking if you are not happy with their current offerings I would contact him personally.Jeff
This message was modified Sep 15, 2007 by JCturboT
Re: Hammocking in new latex mattress
Reply #9 Sep 15, 2007 5:21 PM
Joined: Aug 31, 2007
Points: 793
JCTurboT, from your description of the Garner Mattress, it sounds like the poster is lucky he bought a mattress he can have several comfort exchanges if need be so he should not worry and just exchange the mattress for much firmer knowing he has options.
Re: Hammocking in new latex mattress
Reply #10 Sep 16, 2007 6:31 AM
Joined: Sep 7, 2007
Points: 476
One of the characteristics of talalay latex is that sinking feeling you get in the hip area. A lot of people think this happens when the latex softens up after a few hours, but actually it happens pretty much at once. It's just that after a few hours you really start to feel it and it hurts!

An ILD of 19 is what most manufacturers would consider soft, not medium and certainly not firm. Soft latex provides very poor support and contributes to muscle fatigue. And if you've got 14 ILD latex on top of that you are really sleeping on a marshmellow. No wonder you are sinking in.

Try the firmer configuration. Hammocking is just your body sinking into the soft latex. For some people this isn't a problem. Obviously it is for you. Firmer might help. But for some people latex in any configuration just doesn't provide comfortable support for their back. This is particularly true of side sleepers.

Good luck. I hope this works out for you.
Cloud9- Hammocking in new latex mattress
Reply #11 Sep 16, 2007 11:15 AM
Joined: Aug 31, 2007
Points: 793
Cloud9, I tried sleeping on a 44 ILD and my hips did not sink hardly at all and it was uncomfortable with hardly any mattress confirming to my body like my old rock hard mattress felt like for the first few years when I thought that was how it was supposed to be.  So someone small like me (not quite 5 feet) and 100 lbs can get a Latex mattress with no Hammocking effect if they really wish to have such a firm mattress.  I found I like a little cushion and a little bit of confirming to my body.

That is why each person's body type, size, weight, curve of their backs all come into play what is comfortable for them. We each have different needs and that is what makes finding the perfect mattress for each one of us so difficult.

My Latex mattress is not perfect but compared to what is out there, I feel it is best for my needs right now due to the flexibility it provides. 
Re: Hammocking in new latex mattress
Reply #12 Sep 16, 2007 4:55 PM
Joined: Sep 10, 2007
Points: 689
I'm beginning to wonder if this might be the case for me: Latex, even firm, just not giving me the support my hips and back need. I am a side and back sleeper. Mostly side. I am just so tired (literally) from this lower back pain. Now I'm even feeling it all over. Just this morning I took off our one inch&nbsp;32 ILD Latex toppers. I'll be curious to see what just sleeping on the mattress will feel like. We have 44 ILD layers x 2 and a HR layer of PU foam over the medium firm coils. I hope this works! It seems the reason I stuck the toppers on was because this was too firm. Well, maybe it will better now.&nbsp; What I really want is for it to mimic the feel of an all-cotton mattress or do I?? I suppose I'm going to have to go and try out a mattress that's filled with cotton (such as McRoskey) and see how that feels.<BR><BR><BR><BR><BR><BR><BR> cloud9 wrote:
One of the characteristics of talalay latex is that sinking feeling you get in the hip area. A lot of people think this happens when the latex softens up after a few hours, but actually it happens pretty much at once. It's just that after a few hours you really start to feel it and it hurts!&lt;BR&gt;&lt;BR&gt;An ILD of 19&amp;nbsp;is what most manufacturers would consider soft, not medium&amp;nbsp;and certainly not firm.&amp;nbsp;Soft latex provides very poor support and contributes to muscle fatigue. And if you've got 14 ILD latex on top of that you are really sleeping on a marshmellow. No wonder you are sinking in.&lt;BR&gt;&lt;BR&gt;Try the firmer configuration. Hammocking is just your body sinking into the soft latex. For some people this isn't a problem. Obviously it is for you. Firmer might help. But for some people latex in any configuration just doesn't provide comfortable support for their back. This is particularly true of side sleepers. &lt;BR&gt;&lt;BR&gt;Good luck. I hope this works out for you.
Re: Hammocking in new latex mattress
Reply #13 Sep 16, 2007 8:30 PM
Joined: Sep 6, 2007
Points: 10
We went back in yesterday and lay on the firm, which my wife tells me was her preference to begin with (although she's been fine on the medium), and put in for an exchange.

My original concern about getting the firm was pinching in my shoulder when side sleeping - I've had some nerve problems in one wrist and was told by the therapist to be very careful about side sleeping on too hard a mattress (which our old one was - the comfort layer had essentially all gone). And things were mostly better on the medium.

But the Gardner guy (who doesn't know ILDs but showed us a few cubes of foam when we were in the first time, and I swear the medium's comfort layer was a lot squishier than the firm's) was relaxed and good and tells us we've got thirty days on the new mattress when it shows up (which I didn't know going in!), so I'm optimistic. Will report back after the swap. (And I'll call Newton and ask for Matt Power if it still isn't right.)

We also bought a couple Rejuvenite low-profile plush pillows while we were in. Very comfy. Didn't realize 'til I got home that the manufacturer recommends the high-loft firm pillows for side/back sleepers (and what we got for front/back sleepers), but I suppose it makes sense. I had a low-profile firm latex mattress when I was growing up, and I used to stick a hand underneath when on my side, but my other pillows were all just too tall. So we seem to be going full latex here, at the moment.
This message was modified Sep 16, 2007 by tcdonaghey
Re: Hammocking in new latex mattress
Reply #14 Sep 17, 2007 6:20 AM
Joined: Sep 7, 2007
Points: 476
Lynn, I'm 5'5", 120 lbs, when I tried latex I my original configuration was 32,38, 44 and my hips didn't sink in. But the latex seemed to exert so much force against my body that I was sore all over. In addition to that the latex really didn't provide adequate support for my back so after about a week I had such a horrible backache I couldn't even sleep. I went softer with a 20 ILD layer and while the latex was no longer making my pelvis and ribcage ache, my hips sank right in which threw my spine out of alignment. Plus the soft latex gave me no support and was actually causing my back muscles to spasm as soon as I started to fall asleep and they relaxed. I just couldn't sleep on latex at all much as I would have liked to.

TC's original mattress was configured with very soft latex. It was so soft it was almost all "comfort" layers and no support at all. The situation he was describing with hammocking is very typical. Hopefully now that he's exchanged it for a firmer model it will strike the right degree of support and comfort for him.

BeddyBye, I'm wondering how much latex you have on your bed. From another thread--the one about toppers, I think you also have a layer of memory foam and some PU foam over the coils? You may just have too much foam which is getting in the way of the support your back needs to get from the innerspring. I have what's known as a "luxury firm" (ha ha) mattress now, but I think it still has 3 or 4 inches of foam --the crappy PU kind-- over the innerspring. Over that I have a 1" memory foam topper to give the mattress a cushy feeling without making it too soft. Even so, I still think I would have preferred less foam over the coils over all--just more of the right kind of foam.

I'm always going into the guest room where my old fashion supper firm innerspring mattress now resides and lying down on it. It has no foam layer, just cotton batting over the springs and probably about 1/4" of HR foam sewn into the upholstry. My back always feels better after lying on it for 15 minutes or so, which I can't really say about the new mattress, Of course it's hard as a rock and the rest of my body--hips and shoulders, require the additional padding of 2" of memory foam to make it sleepable, but that's what I mean about less foam, just more of the right kind. My back likes more rigid support from the innerspring than all that foam built into the new mattress allows it to get. 

But getting back to latex and your aches and pains, I'm just wondering if besides having too much foam over all on the mattress, that 44 ILD layer is exerting too much force against your body. Since you have an innerspring unit providing basic support you might try removing that particular layer and seeing if the pain improves. Less foam and less pressure... It might work.
Cloud9- Hammocking in new latex mattress
Reply #15 Sep 18, 2007 2:29 AM
Joined: Aug 31, 2007
Points: 793
cloud9, I could not sleep on a 32 ILD since it was too soft that I sunk in but too firm for side sleeping. I am currently sleeping on a 1" topper over a 36 over a 36 over  44 on one side and the other side, all three are a little firmer than this due to how latex is. I actually like the little firmer side better. 

I would have major back pain and feel pressure if I slept on the configuration you told me.  I need a slight cushion for side sleeping but firmer underneath.

Wish you could have tried my bed out and I have a feeling you would like the side that is a little firmer.  Without the topper, the bed is not so great for side sleeping. I keep wanting to try a 1.5" topper over a 44 ILD to see if this would be perfect despite being very comfortable right  now.  But I have a feeling I can't have a thicker topper.
Re: Hammocking in new latex mattress
Reply #16 Sep 18, 2007 2:54 AM
Foam Nerd
Location: USA
Joined: Aug 30, 2007
Points: 605
cloud9 wrote:
...the latex seemed to exert so much force against my body that I was sore all over.

...But getting back to latex and your aches and pains, I'm just wondering if besides having too much foam over all on the mattress, that 44 ILD layer is exerting too much force against your body. Since you have an innerspring unit providing basic support you might try removing that particular layer and seeing if the pain improves. Less foam and less pressure... It might work.

Can you expand on this? How would latex exert more force than an innerspring unit?
Re: Hammocking in new latex mattress
Reply #17 Sep 19, 2007 6:04 AM
Joined: Sep 7, 2007
Points: 476
Talalay latex is an "active" foam. It wants to return to its original shape while you are lying on it and it will exert force against your body to do so. The higher the ILD the more pressure it exerts. Haysdb, I'm sure you know what ILD is, but for the benefit of those who don't, it's the amount of force required to compress the foam 1". It stands to reason that if 44ILD foam needs 44 lbs of pressure to compress it 1" that same degree of pressure is being exerted back against your body by the latex. 

An innerspring mattress may just feel hard but it does not exert force against your body. You just feel "pressure points" where hips and shoulders press more deeply against it. Latex, oddly, does not produce pressure points because there is nothing rigid inside. It always feels squishy, which gives you a false sense that it's comfortable when it's really working against you. If you don't suffer from any kind of inflamatory condition like arthritis you may never notice this. If you do, after a few hours on a firm latex mattress even the floor seems more comfortable.

Lynn, I often lie here at night wondering if I might have gotten the latex to work for me if I'd had the option of trying an unlimited number of configurations, but honestly, between the pain and lack of sleep I was really happy to chuck the whole thing and go back to sleeping on a firm innerspring mattress with a memory foam topper.

I know you like a super firm bed, but I could never sleep on latex quite as firm as you have yours. The 32 over the 38 and 44 was killing me and you think it sounds soft! Actually the closest I came to being comfortable was on the 32ILD over the 20 with the 44 on the bottom. The 32 gave me enough contouring, but I had discomfort across my shoulder blades, and I could never ever lose the lower back pain no matter what I tried. I just think that too much foam-- any kind of foam, simply does not provide the kind of rigid support my lumbar region needs. I guess that's why I like memory foam. It's passive. It doesn't push back against me, so I can get my innerspring nice and firm the way my back likes it, and my comfort layer nice and soft they way my joints like it.
Re: Hammocking in new latex mattress
Reply #18 Sep 19, 2007 9:30 AM
Location: Mequon, WI
Joined: Aug 30, 2007
Points: 363
cloud9 wrote:
Talalay latex is an "active" foam. It wants to return to its original shape while you are lying on it and it will exert force against your body to do so. The higher the ILD the more pressure it exerts. Haysdb, I'm sure you know what ILD is, but for the benefit of those who don't, it's the amount of force required to compress the foam 1". It stands to reason that if 44ILD foam needs 44 lbs of pressure to compress it 1" that same degree of pressure is being exerted back against your body by the latex. 

An innerspring mattress may just feel hard but it does not exert force against your body.


Don't springs exert pressure as they try to return to their original shape?  Wouldn't that be considered an active material?
Re: Hammocking in new latex mattress
Reply #19 Sep 19, 2007 11:17 AM
Foam Nerd
Location: USA
Joined: Aug 30, 2007
Points: 605
cloud9 wrote:
Talalay latex is an "active" foam. It wants to return to its original shape while you are lying on it and it will exert force against your body to do so. The higher the ILD the more pressure it exerts. Haysdb, I'm sure you know what ILD is, but for the benefit of those who don't, it's the amount of force required to compress the foam 1". It stands to reason that if 44ILD foam needs 44 lbs of pressure to compress it 1" that same degree of pressure is being exerted back against your body by the latex. 

An innerspring mattress may just feel hard but it does not exert force against your body. You just feel "pressure points" where hips and shoulders press more deeply against it. Latex, oddly, does not produce pressure points because there is nothing rigid inside. It always feels squishy, which gives you a false sense that it's comfortable when it's really working against you. If you don't suffer from any kind of inflamatory condition like arthritis you may never notice this. If you do, after a few hours on a firm latex mattress even the floor seems more comfortable.

It is not precisely accurate to say that ILD (aka IFD) is "push back force".  The ILD we refer to is the force required to compress a foam 25%. The standard sample is 4" thick, so this is indeed 1", but more generally it's referred to as the 25% ILD. There is also a 65% ILD that's not talked about as much.

According to the Polyurethane Foam Association
INDENTATION FORCE DEFLECTION (IFD) -- A measure of the load bearing capacity of flexible polyurethane foam. IFD is generally measured as the force (in pounds) required to compress a 50 square inch circular indentor foot into a four inch thick sample, typically 15 inches square or larger, to a stated percentage of the sample's initial height. Common IFD values are generated at 25 and 65 percent of initial height.

Here is a link to a Foamex document
GLOSSARY OF FLEXIBLE POLYURETHANE FOAM PHYSICAL PROPERTY TERMS

It's also not accurate to say that latex pushes back harder than a coil unit, or the ground. Or that a coil unit doesn't push back at all or exert any force on your body.
Re: Hammocking in new latex mattress
Reply #20 Sep 20, 2007 5:23 AM
Joined: Aug 31, 2007
Points: 132
haysdb wrote:
It's also not accurate to say that ... a coil unit doesn't push back at all or exert any force on your body.

Agreed. That's actually exactly what a coil spring does do. If your weight pushes the spring down, the spring is obviously going to push back.

A "false sense that it's comfortable" would be impossible wouldn't it as comfort is subjective? Perhaps a false sense of conformity?

I was no expert in physics but the logic seems flawed on the "44 lbs" argument also. hayesdb would be better suited to further go into that one. hehe  If you put a golf ball on the bed and pushed down on it, when you let go that golf ball would fly if there was actually 44 lbs of pressure pushing back. I don't have a golf ball so try it out and let me know what happens. lol

The jury is still out on whether Im with you on your hatred of latex cloud9 (I may be) but just trying to be accurate here. :)
Re: Pushback force
Reply #21 Sep 20, 2007 10:51 AM
Foam Nerd
Location: USA
Joined: Aug 30, 2007
Points: 605
We're wondering far afield here, but...

Here is the most complete description of IFD / ILD that I have come across.

http://www.pfa.org/jifsg/jifsgs4.html

Speaking of the golf ball, if you press a golf ball into a chunk of ILD 44 latex and release it quickly, it will indeed be launched into the air. This is almost literally the ball rebound test and is a measure of resilience, which is independent of IFD.

Here are a few passages from the above document:

4.2.1 In this publication, The Joint Industry Committee has purposely avoided using the word "comfort" directly associated with IFD or IFD properties. Suffice to say, IFD is a part of the comfort equation, but IFD is not always related directly to comfort. For example, one cannot say that a 25% IFD of 26 lbs/50 in2 always produces comfort, while a 25% IFD of 40 lbs/50 in2 does not produce a comfortable seat. Comfort is not directly related to the magnitude of the IFD number alone.

Here is one I find especially interesting.

4.3 IFD varies significantly with foam thickness. On the exact same foam, the IFD increases as the thickness increases

Latex International tests every core, but a latex core is either 5.6" or 6" thick. The 25% IFD will be higher on a 6" thick piece of foam than it is on a 4" piece of foam. Do they adjust for this?

Something else to throw into the discussion is "support factor" which is the ratio of 25% ILD to 65% ILD. Two foams with identical 25% ILD's can differ significantly in how supportive they are.

4.6.3 Support factor can be related to comfort of furniture. Higher support factor foams of the same 25% IFD will provide more load bearing at higher deflection values. It has also been claimed that with higher support factor values, softer foams may be used in cushions.

This document is actually rather interesting reading, at least for a nerd like me. It highlights very clearly that this 25% ILD number we are so find of is a really slippery thing. Two tests of the same foam with the same test equipment can produce different results! The ILD of foam from different parts of a bun can vary widely. ILD varies with temperature and humidity. This is why ILD is typically specified as a range.

Sorry, back to your regularly scheduled programming...
Re: Hammocking in new latex mattress
Reply #22 Oct 2, 2007 11:37 AM
Joined: Sep 6, 2007
Points: 10
Well, we've swapped our mattress out with Gardner for the firm, which turns out to feel softer than the one in the store does (on our split foundation that came with the medium) but has none of the hammocking. I sink in just a tad at the hips, but not too much. It's very comfortable, and I can change position through the night and be instantly comfortable in the new position. (That said, I think I understand why Nature's Rest and some others go with zoned latex, the down side of which is of course that you can't rotate your mattress. Ours is rotatable, but I've gotten some contrary info on how often to rotate - "a few times per year," "you never have to rotate it," and "every couple of weeks for the first few months, then every 3-4 months" - rather confusing.)

Just FYI. I do think the medium had sunk in about as far as it was going to after 5-15 minutes, and appeared to return to normal after 5-15 minutes, so that seems to be the behavior of the latex. And I'm still no wiser as to the construction of the latex mattress, ILD-wise.
Re: Hammocking in new latex mattress
Reply #23 Oct 3, 2007 11:31 AM
Joined: Aug 31, 2007
Points: 132
tcdonaghey wrote:
Just FYI. I do think the medium had sunk in about as far as it was going to after 5-15 minutes, and appeared to return to normal after 5-15 minutes, so that seems to be the behavior of the latex. And I'm still no wiser as to the construction of the latex mattress, ILD-wise.


If the mattress is doing anything other than returning to its original position immediately, then its something other than latex that you're dealing with.
Re: Hammocking in new latex mattress
Reply #24 Oct 3, 2007 2:47 PM
Foam Nerd
Location: USA
Joined: Aug 30, 2007
Points: 605
D3Fi wrote:
If the mattress is doing anything other than returning to its original position immediately, then its something other than latex that you're dealing with.

Definitely. Latex is about the most resilient material you will find in a mattress, second only to springs. Latex is a very "fast" foam, with no "memory." Latex should spring back to it's original shape immediately.
Re: Hammocking in new latex mattress
Reply #25 Oct 3, 2007 7:44 PM
Joined: Sep 6, 2007
Points: 10
Gardner does claim their latex mattress composition is 100% talalay (although in the store they call it "telelay") under the ticking. I get pretty much instantaneous return with the firm. Even after six hours in one position, on a hot night.

Even with the medium I got instantaneous return if I didn't lay there long enough for the deep sinking effect to take hold, but at 5am on a hot night it was pressed in pretty good for long enough to be uncomfortable upon switching positions. (After fifteen minutes out of bed it looked perfectly flat, but what with the warmth in the mattress under where I'd been sleeping, it still felt a little softer there than on the cooler portions to either side.)

I don't know as much about the physics of latex foam as I perhaps ought to to evaluate anybody's claims on the subject. Anybody wanna swing by Gardner and give a guess as to what they make their mattresses out of, is more than welcome.
Re: Hammocking in new latex mattress
Reply #26 Oct 3, 2007 8:39 PM
Foam Nerd
Location: USA
Joined: Aug 30, 2007
Points: 605
Now that I have embraced the component mattress, it would drive me insane if I had a regular mattress and there was something not quite right about it. I've never even thought about it with my current mattress because until recently I never had any mattress-related issues. Ah, the good old days, when ignorance was pure bliss.
Re: Hammocking in new latex mattress
Reply #27 Oct 5, 2007 5:46 AM
Joined: Sep 7, 2007
Points: 476
D3Fi, I wouldn't say I hate latex. I just don't think it's the be-all, end-all it's cracked up to be. Particularly Talalay latex, touted as superior to the older Dunlop process. I slept on a Dunlop latex bed for 20 years and in my opinion it's a much better sleep surface. The foam is much denser so it provides more support at softer ILDs. It is not prone to the hammocking sensation often described with softer Talalay. Because of the density it has bounce without the jiggly "jello" feel, and unlike Talalay it does not exert force against your body. It's nice and passive. I would be willing to bet that if all the people like myself who found it impossible to sleep on Talalay, tried Dunlop latex, they would have a much easier time of it.  Sometimes the newer technology just doesn't live up to the hype.
Re: Hammocking in new latex mattress
Reply #28 Oct 5, 2007 11:49 AM
Foam Nerd
Location: USA
Joined: Aug 30, 2007
Points: 605
cloud9 wrote:
D3Fi, I wouldn't say I hate latex. I just don't think it's the be-all, end-all it's cracked up to be. Particularly Talalay latex, touted as superior to the older Dunlop process. I slept on a Dunlop latex bed for 20 years and in my opinion it's a much better sleep surface. The foam is much denser so it provides more support at softer ILDs. It is not prone to the hammocking sensation often described with softer Talalay. Because of the density it has bounce without the jiggly "jello" feel, and unlike Talalay it does not exert force against your body. It's nice and passive. I would be willing to bet that if all the people like myself who found it impossible to sleep on Talalay, tried Dunlop latex, they would have a much easier time of it.  Sometimes the newer technology just doesn't live up to the hype.

It is possible that a dunlop latex could be more "supportive" than a talalay latex. Talalay latex has the same density throughout whereas dunlop tends to be more dense toward the bottom because heavier particles settle during the process. The two products could have the same 25% ILD but the dunlop would have a higher 65% ILD and therefore a higher support factor. Support factor is sometimes referred to as "deep down support." This is one reason why dunlop latex is used in the support core of some mattresses, to provide that "deep down support."

Dunlop does also have a higher density, I believe in the 5.6 lb range vs about a pound lighter for talalay. Generally speaking though, density is not directly related to ILD or resilience.

If dunlop latex were less resilient than talalay, i.e. more "dead", more like memory foam, it could give the impression of not pushing back like talalay does. Talalay is very resilient - a ball dropped onto talalay latex will rebound to 60% of the drop height. I don't believe I have ever seen resilience numbers for dunlop vs. talalay. I always assumed they were similar.

That said, I don't think talalay is "hype" at all. It is everthing it's claimed to be - a very consistant, high quality product.

This message was modified Oct 5, 2007 by haysdb
Re: Hammocking in new latex mattress
Reply #29 Oct 6, 2007 9:20 PM
Joined: Aug 31, 2007
Points: 132
I think it comes down to the same as everything else. Not every product works for everyone. Some claim that air mattresses are best for various ailments but I personally find air mattresses to be nothing short of torturous.

Latex does offer certain benefits to those with allergies or MCS that aren't easily found in innerspring mattresses also.

As for the Dunlop ... I actually wanted a mattress with a Dunlop core and perhaps a Talalay topper. Flobeds did not offer it however. SleepEZ didn't have a satisfactory comfort exchange policy considering this was my 1st venture into latex. The other companies just seemed to offer low quality and/or poor customer service records. So I took what was available.

Re: Hammocking in new latex mattress
Reply #30 Oct 7, 2007 6:16 AM
Joined: Sep 7, 2007
Points: 476
haysdb wrote:
It is possible that a dunlop latex could be more "supportive" than a talalay latex. Talalay latex has the same density throughout whereas dunlop tends to be more dense toward the bottom because heavier particles settle during the process. The two products could have the same 25% ILD but the dunlop would have a higher 65% ILD and therefore a higher support factor. Support factor is sometimes referred to as "deep down support." This is one reason why dunlop latex is used in the support core of some mattresses, to provide that "deep down support."

Dunlop does also have a higher density, I believe in the 5.6 lb range vs about a pound lighter for talalay. Generally speaking though, density is not directly related to ILD or resilience.

If dunlop latex were less resilient than talalay, i.e. more "dead", more like memory foam, it could give the impression of not pushing back like talalay does. Talalay is very resilient - a ball dropped onto talalay latex will rebound to 60% of the drop height. I don't believe I have ever seen resilience numbers for dunlop vs. talalay. I always assumed they were similar.

That said, I don't think talalay is "hype" at all. It is everthing it's claimed to be - a very consistant, high quality product.

Interesting info about the resilience factor. I never could understant why Talalay left me feeling beat up in the morning at the firmer ILDs but Dunlop was always so comfortable. Now I get it. Although I wouldn't say it feels anything like memory foam. Dunlop has a definate bounce to it but it waits until you get off it before it tries springing back. And unlike memory foam the recovery is immediate.

I still think Talalay is hyped. And just because it's Talalay doesn't mean it's consistant or high quality--unless you're talking specifically about LI's version.

Re: Hammocking in new latex mattress
Reply #31 Oct 7, 2007 9:00 PM
Joined: Aug 31, 2007
Points: 132
cloud9 wrote:

I still think Talalay is hyped.



You almost make out as if its a conspiracy. Of course any seller of any product is going to hype their own product as best they can and as often as they can. Tempurpedic hypes memory foam. Simmons hypes pocketed springs. Burger King hyped the Whopper.

Perhaps I'm missing the posts you're reading but I haven't seen one yet from a customer claiming latex is the ultimate and flawless bedding solution. It has its flaws just like everything else. We get it, you hate latex. I hate waterbeds, air mattresses and broccoli. Can we move on? :D

This message was modified Oct 7, 2007 by D3Fi
Re: Hammocking in new latex mattress
Reply #32 Oct 8, 2007 1:58 PM
Foam Nerd
Location: USA
Joined: Aug 30, 2007
Points: 605
cloud9 wrote:
I still think Talalay is hyped. And just because it's Talalay doesn't mean it's consistant or high quality--unless you're talking specifically about LI's version.

I am not (yet) familiar with Dunlopillo or Radium talalay, so yes, I am referring specifically to Latex International Talatech.

I expect the 2" layer I should be getting any day now from FoamByMail to be either Dunlopillo or Radium talalay. Unfortunately I won't know which.
Re: Hammocking in new latex mattress
Reply #33 Oct 10, 2007 6:15 AM
Joined: Sep 7, 2007
Points: 476
D3Fi wrote:
Perhaps I'm missing the posts you're reading but I haven't seen one yet from a customer claiming latex is the ultimate and flawless bedding solution. It has its flaws just like everything else. We get it, you hate latex. I hate waterbeds, air mattresses and broccoli. Can we move on? :D

I think you're missing the point of what a forum is all about. And I'm with you on broccoli. But people use the feedback here to make informed decisions about their mattress purchase. They deserve to hear both sides of the issue. I'm glad you love your Talalay mattress, but is a very unforgiving sleep surface for people with certain back issues or inflammatory conditions.

This message was modified Oct 10, 2007 by a moderator
Re: Hammocking in new latex mattress
Reply #34 Oct 11, 2007 12:47 PM
Joined: Aug 31, 2007
Points: 132
cloud9 wrote:
I think you're missing the point of what a forum is all about. And I'm with you on broccoli. But people use the feedback here to make informed decisions about their mattress purchase. They deserve to hear both sides of the issue. I'm glad you love your Talalay mattress, but is a very unforgiving sleep surface for people with certain back issues or inflammatory conditions.



Well I think you're missing the point of what I was saying.

I don't love my Talalay mattress. I haven't had enough time yet (with the Talatex) to love it or hate it. Should I decide I hate it though, I won't post repeatedly simply to state that I hate it and that it's impossible for anyone to sleep on. I am simply a firm believer that we all have different needs and different products will suit different people. Not to mention that your claim that springs don't push back is just ludicrous.

I have back problems that cause me a considerable amount of pain at times and can get bad enough that I can't stand upright for short periods of time. This year I also developed some strange MCS (I say strange because I never had this issue in my life until now) and pretty much any insecticide or other strong-smelling chemical makes it feel like a very large man is sitting on my chest. Dust mites and such seem to have begun to affect me more also - older bedding makes me sneeze and sniffle like I have a cold and by older I simply mean a few years. Well the latter issue really narrowed our mattress search. You simply cannot get an innerspring in a store like Sleepy's, JC Penney's, etc. without having the insecticide. Tempurpedics have a similar issue, not to mention they are near $4000, sleep hot and the lifespan of memory foam for the money is not promising. Water and air have always made my back scream so those were out also. Well that leaves latex or an innerspring from a company like McCroskey, who does not use the insecticides. Well a McRoskey is near $4000 also when all is said and done and if we could have afforded it, I probably have tried one. There are some cheaper options on the net like Beds By Design - but they aren't much cheaper (I was given a quote of about $3000) and what if it was crap? I can't very well ship back an innerspring at my own cost.

Well if you take all of that into account, there wasn't much direction for us to go in except latex or something new-age'ish like gel.  I think the generalization that all people in group X (let's say that's the group of people with "certain back issues") need to sleep on an innerspring if they want to avoid back pains is way off base.

This message was modified Oct 11, 2007 by a moderator
Re: Hammocking in new latex mattress
Reply #35 Oct 14, 2007 6:36 AM
Joined: Sep 7, 2007
Points: 476
D3Fi -- why are you getting so bent out of shape over an opinion? We are all entitled to our opinions. It seems like all you focus on are my comments about lumbar issues and an incompatibility with Talalay and absolutely nothing else. My original post in this thread simply responded to TC's complaint that his soft latex mattress was hammocking. I suggested he try a firmer configuration. Nowhere did I say I hated the stuff! Actually YOU said that.  And I never claimed that springs don't push back. Of course they do. What I said was "An innerspring mattress may just feel hard but it does not exert force against your body. You just feel "pressure points" where hips and shoulders press more deeply against it. "  Springs don't have the same kind of resilience as Talalay, nor do you sleep directly on an innerspring. There are several inches of foam or other comfort layers over the spring unit. You do, however, sleep directly on the latex.

Believe me, I am NOT a lobbiest for the innerspring mattress industry. Far from it. I bought a latex mattress to get away from innerspring mattresses that sag and produce pressure points, along with all the other health issues. And because I loved the idea of sleeping on something as wonderfully comfy as my old Dunlop mattress of yore. I just wish there had been someone on this forum to point out that Talalay was a completely different animal than Dunlop and came with its own set of issues, because if someone had been then I might have been able to make a more informed decision about whether this was a good fit for me--or at least I would have purchased it from a vendor with a better return policy. But everything I read made me wonder why I would ever want to return it it sounded so terrific. And remember, I'd slept on latex before and had no reason to think it would be any different. Only after I developed the most excruciating backache of my life and started poking way down deep into this forum did I discover that my experience was by no means unique. Too late then because I didn't have the information I really needed before I ordered.

I couldn't agree with you more. Everyone is different. Everyone has different preferences and requirements. But if all you hear about are the pros and none of the cons you can't make an informed decision. And like I said, if  it bugs you hearing it over and over, feel free to skip my posts. But someone else may be glad they saw it because it gave them a little more to consider before they made the decision to buy a latex mattress.

It looks like you've tried everything and have moved on to latex out of desperation, although it doesn't seem to be love at first lie down for you either. I hope it works out for you. A good night's sleep can do wonders for your disposition.

This message was modified Oct 14, 2007 by cloud9

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