Memory Foam

[phykell]

Surely the density of the foam simply means it can take more load and consequenty, this will affect the necessary thickness?

I've tried out the Tempur memory foam mattresses and it seems that the only difference between the thicker ones and the thinner ones (apart from price!) is how soft they feel, or how "sinkable" they are.

[Matblack]

Nope

1. Weight (Density in pounds per square foot):
- The weight of a foam is determined by the amount of chemicals used in the composition of the polyurethane foam. The more chemicals, the higher the density and the more visco-elastic it will become. This density will not determine the hardness of the material, this is done through utilizing the ILD rating structure. Many memory foam mattresses use a 4 and 5lb. density, but some use as low as 2 and 3lb. densities.
2. ILD Rating (Indentation Load Deflection):
- The ILD rating is going to tell you how hard or soft a material is. The 25% ILD rating is the number of pounds required to achieve a 25% compression of a 4" thick foam using a 50 square inch indentation. An Example of this is as follows: 20lb. ILD foam indicates that this material took 20 lbs. of pressure to indent this foam 25%. Keep in mind that the higher the ILD, the firmer the foam.

MB

[Pebs]

If you have a Costco card they sell decent ones there, thats where I got mine from for less than £150.

Its lovely, but if you're a hot person it'll take a bit of getting used to.

[Admiral Huddy]

I'm hot baby yeah!

[Pebs]

lol then you'll be smokin'! You'll get used to it but there'll be a few nights where you'll chuck the duvet off and think 'who's idea was this?!'

[phykell]

Originally Posted by Matblack

Nope MB

It doesn't surprise me that there's another metric involved but generally speaking, the density is going to affect the necessary thickness and isn't necessarily a one-to-one relation to quality depending on what you mean by "quality". I have plenty of examples of memory foam in my armoured jeans and various bike gear and it's lightweight and thin. It does seem very dense as well.

If you try out the various Tempur beds, the salesman explains that the only difference between them, other than the price, is the thickness of the foam and the required thickness depends on personal preference and the weight of the person. I'm pretty sure they even do dual-thickness versions for couples who require differnt levels of support.

[_dogma_]

We sell ones at Dunelm Mill if you can get yourself to a store. For a King size bed it's £120 IIRC.

The manager has one and she loves it! I've been at her house an napped on it before going out once and it's awesome!

[Mark]

http://search.qvcuk.com/QVCUK/Search...ry=memory+foam

Yes, QVC. If you avoid the countless jewellery and beauty hours, some decent stuff does turn up occasionally.

Anyway, can't comment on quality of those items so YMMV. I've got a pocket sprung mattress with a memory foam topper, and a feather topper on top of that. When I'm not suffering from insomnia I sleep rather well, but it certainly makes for an interesting experience trying to get up.

[Justsomebloke]

Read this thread earlier & had no comment to add but since then a mate has been round & mentioned he had got one for his Canal barge, A 5cm one, He loves it & says although it feels a bit weird at first it's Superb.