Why GSM Matters in Microfiber — and When It Doesn’t

GSM is often used as a shorthand for quality, but it’s only meaningful when matched to the right task.

GSM — grams per square metre — measures fabric density. Higher GSM means more fibre, but more fibre isn’t always better.

For tasks like buffing waxes, sealants, or drying final residue, high GSM matters because fibre depth allows material to be collected away from the surface rather than pushed across it.

An 800GSM cloth excels here. Its long pile provides space for residue to migrate into the cloth, reducing pressure on the paint.

However, for tasks like glass cleaning or interior wiping, excessive GSM can reduce control and clarity.

Understanding GSM isn’t about choosing the highest number — it’s about choosing the right tool for the stage. Used correctly, high-GSM cloths reduce friction, pressure, and repeat passes during final finishing.

Microfiber quality helps reduce friction, but understanding the underlying physics of paint contact is just as important.