Sunday, August 1, 2010

Memory Foam Density Myths Can Cost You Money

Foam density is among the most significant factors whenever you a foam mattress. You might be paying much more than you need to and receiving less than you think you are.

The measurement of Visco elastic foam density is in pounds per cubic foot (Imagine a 12" x 12" x 12" pair of dice).

The Top Memory Foam Density Myths:

1. Shelling out more for higher density foam is always a great idea.

This one is true up to a point. Visco foam densities can range from 2.5 lbs to 8 lbs. Most folks are comfy between 4 and 6lb densities. There is no real need to pay more for 6 to 8lb memory foam. The slight increase in mattress lifespan is not worth the extra cost. In addition, you will sleep cooler also because denser foam traps more body heat.

2. Memory foam density has no effect what-so-ever on the longevity of a mattress' useful life span.

Absolutely Wrong. A 2.5lb density mattress will feel the same as a 5lb one. Changes are you might not notice any difference immediately. However, the 2.5lb mattress will tend to lose its 'spring-back' quicker. This is because there is not enough "stuff" to support the microcells over a long period of time. Foam mattresses that are not 3lbs dense, can develop depressions as soon as a couple months from your purchase date.

3. Denser foam means more firmness.

Greater density is more relative to longevity and durability than how firm the mattress is.. High density foam can range form be very stiff to very soft. The firmness is dependent upon the manufacturing process used.

4. Visco elastic density is the one and only consideration when selecting a memory foam mattress.

Dead Wrong. Experts agree that Indentation Force Deflection (IFD or Indentation Load Deflection - ILD) is an important consideration when you're picking out your bed.. The IFD or ILD rating is a measure of 'firmness'. It is measured in lbs/% of compression. The range is from 10 (soft) to 16 (hard). The majority of folks will be comfy in the 12-14 range. It is Unfortunate that IFD ratings are sometimes not shown on packaging or websites. Before you purchase, be sure to ask about this..

5. Higher density foams are equal.

Wrong. There are documented cases in which the foam density has been 'boosted' by adding heavier materials like sand. In the best case, these additions make the foam denser. However, they cut and weaken the microcell walls that make up the visco elastic foam. At their worst this stuff can be toxic. Buying mattresses made in countries with strict consumer protection laws should help protect you from these bad practices. Be sure to make your purchase from a manufacturer who has a good reputation. In addition make sure they have a 30 day no questions asked money back guarantee at a minimum.