Resin-bond diamonds are polishing tools with industrial diamonds set in a resin matrix. They’re used for the finer steps after metal-bond grinding. Working through higher resin grits builds the shine. The final resin grit largely determines the sheen level.
What Resin-Bond Diamonds Mean for Your Floor
If metal-bond diamonds are the coarse sandpaper, resin-bond diamonds are the fine sheets you use at the end. After the coarse grinding, crews switch to finer diamonds bonded in resin to bring up the shine.
This is the stage you’ll see the most of in the final look. Where the crew stops in the resin steps sets your sheen level. Stopping at 400-grit resin gives a low-sheen satin finish, and going up to 3,000-grit resin gives the highest gloss.
Each resin step is another full pass over the floor. More passes mean more labor, which is the main reason a glossier floor costs more than a satin one. The densifier usually goes on partway through these steps to harden the surface so it takes and holds a better polish.
Resin-Bond Diamonds FAQ
What are resin diamonds used for on concrete?
They polish concrete after the coarse grinding is done. Each finer resin grit smooths out the scratches from the step before and raises the shine. They’re what turn a ground floor into a polished one.
Is resin-bond better than metal-bond?
Neither is better. They do different jobs. Metal-bond diamonds grind and flatten, and resin-bond diamonds polish. A polished floor needs both, used in that order.