Pool Plaster Disc Grit Guide

Our non-corrosive diamond pool plaster discs are designed for dry use, giving pool contractors and DIY owners a safe, fast way to smooth and restore rough plaster finishes. Use this grit guide to select the correct disc for your project.

Pool Plaster Disc Comparison

Grit Best For Surface Types Notes
50 Grit Heavy scale & rough plaster removal Marble, quartz, pebble Aggressive cut — start here if surface is severely rough
70 Grit Refining & blending after 50 grit Marble, quartz, pebble Smooths scratches; prepares surface for final finish
120 Grit Final smoothing & polishing All plaster types Leaves a comfortable, swim-ready surface

How to Use

  • Dry Use Recommended – no water required
  • Max RPM: 3,500 (variable-speed polisher/sander)
  • Work in Sections: about 5 × 5 ft at a time
  • Residue Control: vacuum or rinse between passes to prevent heat buildup
  • Backer Pad: use with 7″ hook & loop backer pad (AG7529)

Recommended 3-Step Process

  1. Start with 50 grit for initial heavy scale removal.
  2. Move to 70 grit to refine and smooth the surface.
  3. Finish with 120 grit for the best underfoot feel and long-lasting smoothness.

Dry Use vs. Wet Use

Our discs are engineered for Dry Polishing and Resurfacing.

Most pool owners and contractors prefer dry use because it requires only a standard 7″ variable-speed polisher with GFCI protection or cordless — no expensive water-fed machine is needed.

 

Wet grinding can extend disc life by keeping the pad cooler, but it requires specialized equipment and a water supply. Dry use is simpler, faster to set up, and keeps costs low while still delivering excellent results.

Why Non-Corrosive Diamond Discs?

Unlike traditional metal-bonded pads, our discs feature a non-corrosive diamond matrix that won’t rust or react with pool water. This makes them ideal for both standard and saltwater pools. They deliver cleaner cuts, longer life, and consistent performance in every pass.

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