The Complete Handbook of Furniture Floor Protectors

Chapter 1: Understanding Furniture Floor Protectors

Every day, thousands of small rubber discs and felt squares are stuck to the bottoms of chairs, tables, and sofas across the world. Most are applied with little thought, and many will fail within a year, leaving behind a dark stain, a scratched plank, or a silent but permanent groove in a floor. To understand furniture floor protectors, you have to forget the packaging and the marketing names and look at the actual mechanics of what happens between a load and a floor. A furniture floor protector is a controlled interface. It sits between a piece of furniture and the surface it rests on, with a specific job: to keep the surface from being damaged by the object above it. That is the entire category, but the ways to accomplish that task are more varied than most people ever consider.

The first thing to understand is that damage is not random. It is the result of physical forces: downward force, friction, and abrasion. When a wooden chair leg rests on a tile floor, the full weight of the chair is concentrated on the small cross-section of the leg. A typical straight chair leg has a contact area of about four to six square centimeters. If the chair and its occupant weigh 90 kilograms, that is roughly 900 newtons of force, or about 900 newtons divided by 0.0006 square meters of contact. The pressure is enormous. If you place a 60-kilogram person in a chair,