Hey there! That's a fantastic question to ask when you're looking for a quality sofa that will last. While the provided search results have titles about foam density, they don't contain the specific details to answer your question, so I'll give you a rundown based on general industry knowledge.
When choosing a sofa, you'll want to look for foam with a density of at least 1.8 pounds per cubic foot for the seat cushions. This is often considered the sweet spot for good quality residential furniture. It provides a great balance of durability, support, and comfort for everyday use. Foam with a density below this, say around 1.5, is often found in more budget-friendly pieces and will likely soften and break down much faster.
If you're looking for something exceptionally durable, you might see foams with a density of 2.0 to 2.5 pounds. These are considered high-density and will offer excellent longevity and support, holding their shape for many years. They are often used in higher-end furniture.
It's also helpful to know that foam density is different from foam firmness. Density refers to the weight and durability of the foam, while firmness (often measured as ILD) refers to how soft or hard it feels. You can have a very durable, high-density foam that is also quite soft. So, for a long-lasting and comfortable sofa, asking for a density of 1.8 or higher is a great rule of thumb.
