1. What do the grit numbers mean on sandpaper?

Grit numbers indicate coarseness. Lower numbers like 60 grit are rougher, used for stripping. Higher numbers like 400 grit are smoother, for finishing.

2. What’s the difference between sandpaper and sanding rolls?

Sandpaper sheets are for hand sanding or small jobs. Sanding rolls allow you to cut custom lengths, often used with machines or sanding blocks.

3. Can sandpaper be used on plaster or painted walls?

Yes. Use finer grades like 120–220 grit for smoothing plaster or scuffing painted walls before repainting. Avoid coarse grades unless you’re intending to remove material.

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Sandpaper

Sandpaper is used throughout construction, for everything from surface preparation and smoothing timber, to removing old finishes and scuffing surfaces for better adhesion. Builders use it on plaster, softwoods, hardwoods, and metalwork to prepare ...

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