If you are planning reupholsterying your furniture, producing an excellent end result is the critical factor. A major component of your project should involve using the correct upholstery foam.
When deciding on upholstery foam, there are several features. There are two specific features to consider.
One is density. Density is another word for the quality of the upholstery foam. A 2.0 density is a higher level of quality foam in comparison with a 1. density foam. Most people in the trade agree that an upholstery foam with a density of 2.0 or more is a good foam. Urethane is the chemical in foam, the greater the urethane content, the higher density and less air exists in the foam. Higher Densities are used if additional resiliency and longer wear is desired. Most foam with a 2.0 density or more are good for seating cushions combined with the the correct compression number. Upholstery foam that is lower in density, isn’t going to last or support as well as a higher density softer padding, even if it is firm.
The second upholstery foam attribute, compression, also known as the ILD, establishes the stiffness of the foam. A compression of 10 would be a extremely soft foam, 34 a moderate firm, and 48 a firm foam. A density of 10 would be used for a back rest cushion, 34 is usually for a seating foam wherever med firm is desirable, and 48 or more is for whenever a firm seat cushion is desirable.
The majority of upholstery foam is open cell foam, meaning there is air inside it. If open cell foam used outside, water can soak into it. Silk Film that is a soft vinyl membrane product used to cover the foam when used outside to help keep the water from leaking into the foam. If open cell foam will be used outside it should be used with a moisture barrier cover before putting the last outside cover on.
Closed cell foam, MLC foam, is more expensive, but due to the closed cell design water is not able to penetrate into the foam. Closed cell foam is good for outdoor and also boat cushions where humidity and water are found.
Another option meant for upholstery foam applications that may get damp is flow through foam, EZ DRI 60 and EZ DRI 30. Flow through foam is an open cell foam that the cells are essentially cracked so the water flows through a lot quicker and therefore dries significantly quicker. It can be used for all outside purposes, like patio furniture, boat cushions. EZDRI is used for outdoors cushions were quick drying is needed. In this case a porous cover needs to be utilized on the bottom side of the cushion to allow the water to fall on out and permit the cover and foam to dry rapidly.