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DIY: firm up support or add topper, final adjustment 18 May 2022 14:07 #11

  • lantern71
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I can totally sympathize with your frustration as it seems some of us (myself included) have a very narrow window of position/alignment to find things comfortable while sleeping. I might feel I got things perfect one night and wake up feeling great then the next night or two I can feel the issue coming back (not sure if things are settling or something else at play, still working on narrowing it down). I will say I'm not sure I would be anywhere even close without the zoning I added to the mattress which allows me to make adjustments in specific areas without affecting the rest of the bed.



I've started to play with zoning. We"lol see what happens.

Two questions for you mattrebuild:

1) Do you have any suggestions for latex whose firmness/support falls between a 24 and 28ild talalay? In theory would a 24 Dunlop do anything? I am aware of the difference in response curves on paper but not sure how that plays out in practice.

2) what are your thoughts on 6" cores vs two 3" layers response curves? Most comments I see say the difference is minimal but I know ken at APM thinks otherwise.

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DIY: firm up support or add topper, final adjustment 18 May 2022 16:34 #12

  • Mattrebuild
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I've started to play with zoning. We"lol see what happens.

Two questions for you mattrebuild:

1) Do you have any suggestions for latex whose firmness/support falls between a 24 and 28ild talalay? In theory would a 24 Dunlop do anything? I am aware of the difference in response curves on paper but not sure how that plays out in practice.

2) what are your thoughts on 6" cores vs two 3" layers response curves? Most comments I see say the difference is minimal but I know ken at APM thinks otherwise.


1) It depends on what you’re doing with it but if it’s going to be a top layer I would stick to talalay (esp if you need more travel to help with pelvic rotation). If you really wanted to find some you’d have to have someone look at the testing on the side of the layer (either a soft 28T or a firm 24T) but no idea how common that would be to find. The other option would be to go down to three 2” layers (24/24/28 or 24/28/28) in an effort to dial things in. Personally the second option is where I would switch to zoning given the expense involved.

2) The thicker 6” core would provide a bit more support than just two 3” layers (due to tension in the material) but personally the issue of dealing with cores that large/heavy and the difficulty of making changes would not be enough benefit for me to go that route. It might be good if you were able to try it in a store and found it a good match for you but if you were just experimenting with DIY I would probably chose the thinner 3” layers to give you more options to get it dialed in.

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DIY: firm up support or add topper, final adjustment 19 May 2022 15:34 #13

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1) It depends on what you’re doing with it but if it’s going to be a top layer I would stick to talalay (esp if you need more travel to help with pelvic rotation). If you really wanted to find some you’d have to have someone look at the testing on the side of the layer (either a soft 28T or a firm 24T) but no idea how common that would be to find. The other option would be to go down to three 2” layers (24/24/28 or 24/28/28) in an effort to dial things in. Personally the second option is where I would switch to zoning given the expense involved.


I'm actually looking for less travel. I am well aware of the response curves. I guess I am just wondering how different a 24ild Dunlop is from Talalay in practice? I have only compared firmer ilds and the differences were not huge for me.

Side note, while the sample size is less than 10, every TG layer I have played with has been on the low end of the specified range according to the affixed label.

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DIY: firm up support or add topper, final adjustment 20 May 2022 06:22 #14

  • Mattrebuild
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I'm actually looking for less travel. I am well aware of the response curves. I guess I am just wondering how different a 24ild Dunlop is from Talalay in practice? I have only compared firmer ilds and the differences were not huge for me.

Side note, while the sample size is less than 10, every TG layer I have played with has been on the low end of the specified range according to the affixed label.


Dunlop definitely stiffens up faster than talalay which is why it's great for support. If you look at the graph below (even though I don't have exactly identical ILDs) you can see for instance the 22T and 20D being compared (with the 20D being considered technically "softer"). You can see with lighter pressures the 20 ILD dunlop (yellow line) deflects more quickly initially but as you push harder on them both the 22ILD talalay (blue line) takes the lead in deflection (at around 20 lbs in the test or 0.4psi) and that continues through the rest of the curve. The difference in deflection isn't huge (maybe 10-15%) but it's certainly not negligible either. If you are looking for less travel then dunlop could certainly be worth trying in a similar ILD to the talalay you already have.



I've honestly seen latex layers with test ranges on both sides of the spec but again not sure how common it would be to find ones on either side (ie does the manufacturer aim high or low typically which would then affect the probablility of finding what you wanted).

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