NTC

The National Training Center for Stone & Masonry Trades

Stain Removal Guide

SWIRLS

Type:

Circular pattern swirls

Problem:

Swirls marks appear as circular patterns on the surface of the stone. Floor machines using abrasive pads, such as steel wool, or pads that have trapped sand and grit under them, usually cause them.

Solution:

1. Light swirls can be removed by re-polishing. Heavy swirls will require re-honing and re-polishing.

Caution: When using any type of rotating machine (floor buffer, automatic scrubber, hand machine, etc.) never hold the machine stationary while it is running; keep it moving. Keeping the machine stationary may cause severe swirling.

Copyright 2004 Frederick M. Hueston and The National Training Center for Stone & Masonry Trades Inc.