How Foam Seats Make Sofas More Practical

Foam is the quiet reason some sofas still look smart after years of daily use while others sag within months. This article explains how a foam core keeps seat height, edge definition and upholstery tension consistent, and why that matters more in busy households than an extra layer of softness. We cover the difference between density and firmness, the three constructions you will encounter most often, and how foam over a sprung base compares with a solid block or a fibre wrapped core. There is practical guidance on choosing the right firmness for how you actually use the room, why foam suits damp British properties, and how to look after cushions so they last. We also explain when replacing the inserts is a better move than replacing the sofa....