Paper-backed abrasives (i.e., traditional sandpaper) are the most affordable abrasives and are available in a wide range of weights, from light and flexible to thick and tough. Weight grades A to C are best suited to hand sanding and the use of pressure-sensitive adhesives (PSA) or hook-and-loop discs, while grades D to G are strong enough for stroke or wide-belt sanding belts.

Paper substrates are the lightest and most widely used. However, paper is also the weakest backing used for coated abrasives. Paper's lack of strength is offset by its affordability.

Paper backings are recommended for light to medium sanding jobs on surfaces such as wood, textiles, and lacquers, as they provide a good finish while generating less friction and heat. Paper is ideal for flat sanding applications and generally provides the best finish for flat sanding jobs. However, paper supports tear easily and are less suitable for more rigorous use. In addition, paper is not compatible with wet applications, unless it has been specially treated.

1. Advantages

Available in a variety of thicknesses and weights

Generates minimal friction and heat

Often the cheapest option

Provides a smooth finish

2. Disadvantages

Cannot be used for wet applications unless treated

Rips and tears easily

3. Usages

Weights A through C are good for hand sanding and not suitable for belt/machine sanding

Weights D through G are best suited for belt/machine sanding

Paper is best utilized for medium sanding applications like wood, lacquers, cork, and textiles