Types of Foam (long)
My wife does window treatments and cushines (no not boat cushines so this is not commercial) and suggested I post the following info. She had samples mail to us from foamorder.com and that makes the selection process easier. No I don't own stock in these guys, they are just a good vendor. Foam typesClosed Cell FoamClosed cell polyethylene: this foam is white, and comes by the yard, in sheets, or custom cut to your dimensions. Closed cell foam does not absorb water. We have two grades of closed cell foam: Crosslinked Polyethylene, and EVA grade. Crosslinked Polyethylene is very rigid; it has no give to it. This may be used for packing, padding in helmets, or insulation for hot tubs. EVA grade is also a firm foam, but with a softer feel. When pressing your fingers into it, it squishes down a little but comes right back into place. This may be used for kneepads, boat cushions, life preservers, or shin guards LatexLatex is a naturally derived biodegradable product. It comes from the rubber tree. Latex is hypo-allergenic, and breathes to keep you warm in the winter and cool in the summer. Bacteria, mildew, and mold cannot live in latex foam.Conventional Foams5320A medium feeling foam. It is the best economical mattress. It is really comfortable. People use this for RV, camper or boat beds. This foam is expected to last 5 years with irregular use. (5320 is a 2 lb/ft3 foam with a 30 ILD.)5600A medium feeling foam, this is one of the best pieces of urethane foam (second only to Latex). 5600 foam is heavy and will give you many years of comfort. We recommend this foam for any mattress which is used regularly. We strongly recommend you buy a custom cover to protect any foam of this quality. This foam is expected to last 15 years. Suggestion: purchase a "comfort package" above. (5600 is a 2.8 lb/ft3 foam with a 34 ILD.)5700 5700 is a very firm foam. It makes a good quality, hard mattress. It is fine for a guest bed, sofa bed replacement or any hard mattress. Remember, the thicker it is the harder it will feel. This foam is expected to last 5 years. (5700 is a 2 lb/ft3 foam with a 55 ILD.)5850 A firm feeling foam. This is one of the best quality foams. It has a high density, which adds life. We recommend this for any firm mattress. We strongly recommend you buy a custom cover to protect any foam of this quality. This foam is expected to last 15 years. (5850 is a 2.5 lb/ft3 foam with a 40 ILD.)5900A high quality, very firm grade of foam. This foam is one of the best qualities. It is great for an extra firm mattress. We strongly recommend you buy a custom cover to protect any foam of this quality. This is one of our best sellers. It is expected to last 15 years. (5900 is a 2.7 lb/ft3 foam with a 45 ILD.)N90CA high quality, rigid foam. This foam is hard. You could not get a firmer mattress unless you slept on wood. It is one of our strongest foams and will give years of support. This is our most popular cushion replacement if you are wanting a really firm cushion. It is expected to last 15 years. (N90c is a 3 lb/ft3 foam with a 70 ILD.)