The Three Important Properties of Cushions
As you may not know, there are various types of foam that are available on the market. Each type of foam varies in that they have different properties, making them useful for both outdoors and indoors. They range from soft to firm with a designated density and a form of treatment added.
Seat cushions must be comfortable, especially if they are used for more than 3-4 hours a day. One of the ways that you can determine how soft or firm a foam cushion is, is by measuring its Indentation Force Deflection value. This reflects the amount of pounds required to compress a block of foam by 25%. If you purchase foam that has a lower designated ILD number to it, you can expect it to have a softer texture. A higher ILD number has a more firm texture to the foam.
Density can be viewed as how much wear and tear your cushion can take before it ultimately has to be replaced. The higher the density of the foam, the better grade the foam is. If you are replacing a seat that will be frequently used throughout the day, a recommendation would be to find foam with a higher density value.
Foam is also treated with certain agents to prolong its life as well as aid in outdoor usage. Antimicrobial agents are often embedded in foam to help boat owners maintain their cushions as well as prevent bacterial growth from occurring. These marine-friendly foams are usually open-celled and lighter due to the fact that moisture and air needs to be able to seep through to the bottom.
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