What is the Best Foam to Use for Sofa Cushions?

blue sofa

If you are reading this article, there is a good chance you are sitting on a seat right now. If you aren’t sitting, there is likely a sofa or chair in close proximity. Sitting is something we often do, but don’t think much of it. That is unless the seat you are sitting on is uncomfortable. Then you will notice it. Old sofa cushions sag and lose their ability to return to form, making for an uncomfortable experience when sitting. Yet sitting is an integral part of our day, so it is important to ensure that along with good posture, the seat you are sitting on is comfortable. The good news is that if the foam in your cushion has deteriorated, it can be replaced. We are here to tell you what is the best foam for sofa cushions.

The foam used in a cushion is one of the most important factors in determining the comfort and lifespan of your sofa. The lifespan of a foam cushion is primarily dependent on the quality of the foam. This quality is often measured by the weight (density) of the foam. Each foam has a weight to it, and typically, the higher the weight the better. If you have read our “Which Foam Should I Use for my Mattress?” article, you will know that there are quite a few possibilities when it comes to foam in mattresses. Sofa cushions follow the same pattern. We will talk about four types of foam that are used in sofa cushions: High Resilience foam, Lux foam, High-Density Foam, and Polyurethane foam.

Best Foam Cushion – High Resilience Foam

Overview: High Resilience foam is the best foam to use for cushions and is the leading foam type if you are looking for high responsiveness for extra bounce and quick return action.

When it comes to what is the best foam for sofa cushions, High Resilience foam provides the most comfortable seat cushion and offers the highest longevity. It is an excellent quality foam that is used in many different types of expensive furniture and yacht cushions. High Resilience foam is the heaviest foam on our list, at 3.0 lbs. per cubic foot, exceeding the minimum qualifying weight of 2.5 lbs. per cubic foot. It is very buoyant and resilient, giving it high responsiveness. That means that it will return to its original shape quickly after compression. This is ideal for those that want more bounce in their cushions. With an open-cell structure, High Resilience foam is very springy but still offers sturdy support. It will also last a long time, between eight to ten years, as it begins to deteriorate and soften.

Good Quality Foam Cushion – Lux Foam

Overview: Lux foam is a good choice for those seeking a firmer foam cushion that will last around six years.

Lux foam is a good quality foam for those looking to upgrade from High-Density Foam, the foam normally found in average foam cushions. It is ideal for those wanting a firmer foam. It is also a heavier foam, weighing 2.2 lbs. per cubic foot. Similar to High Resilience foam, Lux foam has a quick return action, so it will return to its original shape quickly after compression. It is also a durable foam and able to support various everyday applications. Lux foam can also be used in bench cushions and camping pads. It is cheaper than High Resilience foam but is of better quality than High Density and Polyurethane foam. Lux foam is a good choice for quality and is a long-lasting foam cushion for approximately six years.

Most Common Foam Cushion – High-Density Foam

Overview: High-Density foam is the most widely used foam for furniture because it is economical. It will provide support and comfort, but to a lesser degree than Lux or High Resilience foam.

High-Density foam is a medium quality industrial grade foam used in most average furniture because of its economic price structure. It weighs 1.9 lbs. per cubic foot, and lasts approximately four years. High-Density foam will return to its original shape after compression at a medium pace. High-Density foam will get softer over time as it deteriorates. When you sit on an old seat at a restaurant or bar that goes straight to the seat’s wooden platform, you are likely sitting on an old High-Density foam cushion that deteriorated and has lost its cell structure. High-Density foam offers a more consistent level of support and comfort than Polyurethane foam but is less expensive than Lux and High Resilience foam.

Cheap Foam Cushion – Polyurethane Foam

Overview: Polyurethane foam is the cheapest foam and will not be as comfortable or last as long as other foam types.

If you buy furniture from a home furnishings store like IKEA, chances are you are purchasing low-quality furniture for a low price. That means that lower quality foam is being used, and it is more than likely Polyurethane foam. Polyurethane foam is inexpensive, low-quality foam. Over a short period of time, it will deteriorate and develop sink areas. When it does, it will not return to its original form. This foam lasts between one to two years. It is also the lightest foam type, at 1.2 lbs. per cubic foot. It has a slower return action than other foam. Polyurethane foam is ideal for display furniture.

Wrapping Foam with Dacron

Dacron wrapped around foam

Foam can be wrapped in Dacron polyester fiber, usually between 0.5” – 1.5” thick. This is done by gluing the Dacron wrap to the top and bottom of the foam with spray adhesive. Dacron will make the cushion look puffy and feel softer. Oftentimes store furniture will insert several inches of Dacron wrapped around the foam to give the illusion that there is a thick amount of foam inside. It also will make the sofa look extra comfortable and puffy. However, if the Dacron is too thick it will compress over time and make the cushion lose its shape and will not return to form. That is why we recommend not going beyond adding 0.5”–1.5” of Dacron wrapping for foam cushions. You can find Dacron and spray adhesive here on our supplies page.

If you found this article helpful and now know what is the best foam for your sofa cushions, you can order foam cushions cut to size for different kinds of furniture here at Foamonline.com. For custom cut furniture and boat foam cushions, head to our Square & Rectangular-Shaped Foam page. To order trapezoid cushions for bay window seats, head over to our Trapezoid Shaped Foam page. If you need circular cushions, visit our Cylinder-Shaped Foam page.

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